₦airaland Forum

Felicity0001:
A lot better my brother thank you.

Brotherly how are you doing now? Madam nko?
How far about the bolt thing bro?

chucks231:
Do u know any scan center and preferably on the island ajah axis because of my tight schedule

Bro I run a mobile workshop, I can work on your car at your own pace, from your naration I can deduct two things, it's either your crankshaft position sensor or an electrical issue but let's run a scan to know sir.

B-Automobile Nigeria Limited
08055347947

From experience until the woman's property is packed out of that house, that is when you will have peace of mind.

https://www.nairaland.com/5770914/mechanic-roundtable/3#89707193

Good day famz, we bring you more on engine rattling or tappet sounds and possible cause(s).
Click on the link to read more.
If you have more question or comments to give don't forget to message us.

Thanks

Do have a lovely day and remember to stay safe to stay alive

B-Automobile Nigeria Limited
08055347947

https://www.nairaland.com/5770914/mechanic-roundtable/3#89707193

Good day famz, we bring you more on engine rattling or tappet sounds and possible cause(s).
Click on the link to read more.
If you have more question or comments to give don't forget to message us.

Thanks

Do have a lovely day and remember to stay safe to stay alive

B-Automobile Nigeria Limited
08055347947

The Common Problem: Engine Noises

When an unfamiliar noise starts coming from somewhere under the hood, people get scared. They may not know enough about complex engine systems to know if it’s something to worry about or not. Let’s discuss some of the source areas mechanics find to be the most common places for engine noises to originate from

Valve Train Noise

Valve and hydraulic lifter noise has a clicking sound that usually quiets down as you raise the engine RPM’s. A lifter is what opens and closes intake and exhaust valves. These noises can be caused by worn or sticking hydraulic lifters. Sticking lifters in most cases is caused by a varnish build up on the lifter surfaces. They may also be caused by low oil pressure (which would cause a hydraulic lifter to collapse).

Sticking lifter problems can many times be solved by adding a detergent additive to the oil. If this doesn’t do away with the noise, then the worn lifters that continue to make noise would require replacement. This is not an easy or cheap job and will need to be done by a trained auto repair technician. 

Timing Chain Noise

Many of the newer engines have overhead camshafts with longer timing chains. A timing chain connects the crankshaft to the camshaft to insure the valves open at the proper time. The slack in these chains is usually kept tight by hydraulic tensioners. The chains ride against a nylon guide (a chain guide) which, in time, begins to wear. At the point where the chain guides are worn beyond the ability of the hydraulic tensioner to take up the slack, the timing chain begins to rattle. This noise is caused by the timing chains becoming so loose that they whip back and forth against the guides and possibly the timing cover.

If the oil pressure is correct, replacement of the hydraulic tensioners and chain guides would be required. A mechanic’s stethoscope is a great tool to pinpoint this noise. If the noise is loudest when touching the timing cover with the stethoscope disassembly would be required to confirm and to repair the problem. This is a semi major job for most of these engines and would usually cost in the five digit range.

Detonation, Pre-ignition (Pinging) Noise

You usually hear this noise when accelerating the vehicle. Most people call this a pinging or rattling sound. This noise is caused by an air/fuel mixture in the engine cylinder being ignited prematurely by the heat of compression as the piston is moving up on the compression stroke. If ignition happens before the piston reaches the top of its stroke, this is called pre-ignition or pre-detonation, which can damage the pistons, valves and connecting rods. They get damaged because the fuel igniting too early produces pressure waves from the fuel’s explosion in the cylinder, which collide with the cylinder as it’s moving up. And that’s also why you hear the pinging and rattling noises.

Some of the causes of this condition are improper fuel octane, engine overheating, improper ignition timing, the EGR valve not functioning properly and problems with the computer or knock sensor. All these conditions can cause the air fuel mixture in the cylinders to ignite before it’s supposed to. This creates multiple flame fronts in the cylinder fighting each other and causing the pinging and rattling noise. Check your owner’s manual to make sure you’re using the right grade of fuel. Or you can switch to a higher grade for a period and see if the noise goes away. If it doesn’t, you’ll want to look at these other possible causes.


Connecting Rod Noise

Connecting rod noise is caused by excessive clearance between the crankshaft and the connecting rod bearing surface. This happens when you have low oil pressure causing the bearing to run dry of lubrication, which in turn will damage the bearing and crankshaft surfaces. This can also be caused by poor maintenance practices such as not changing oil at a regular interval. The oil gets dirty and grit can wear the surface of the bearings. The noise you hear is a knock that is heard towards the bottom of the engine. The noise is usually heard when you hold the throttle at a steady RPM. If it sounds like a single knock, you (or your mechanic) can isolate the cylinder by disabling the spark or the fuel injector for each cylinder one at a time. When the noise goes away or gets much quieter, you have found the problem. Problems like this require immediate attention because continued running of the engine in this condition will damage the crankshaft and require a major engine overhaul. The rule of thumb is, once you hear the noise there is a high probability you will need major engine work in the four figure cost range.

Crankshaft Bearing Noise

Crankshaft bearing noise is also caused by low oil pressure which damages the bearing surfaces and could eventually damage the crankshaft itself. This type of noise is usually described as a rumbling or thumping sound deep in the engine when accelerating. If this sound is heard, it is extremely important that the engine not be run again until the oil pan is removed and the crankshaft bearings are inspected. In many cases the engine can be saved if the crankshaft is not damaged. A mechanic will fix the problem by replacing the bearings and solving the oil pressure problem. Bearing shells are what the crankshaft rotates within. If you continue to run the engine with this condition, you will most certainly cause a major engine failure. It is also a high possibility that when you hear the noise it may be too late to save it without removing the engine. This can be an expensive repair in the four figure cost range.

Piston Slap

This noise is caused by excessive clearance between the piston skirt and the cylinder wall, and is usually found on high mileage vehicles. The usual cause of this problem is cracks in the lower piston skirt. The piston skirt is the lower part of the piston which will develop cracks over time due to metal fatigue. The noise sounds like a muffled bell sound or a hollow clatter deep in the engine and is more noticeable when the engine is cold. If the noise goes away when the engine warms up, nothing needs to be done. The clearance is reduced by the expansion of the piston skirt as the engine comes up to temperature, and in many cases the noise goes away completely. If the noise is reduced when the engine temperature rises but does not go away, then replacing the piston itself would be the most likely remedy. There is really nothing you can do to prevent this problem and, luckily, it’s not as serious a repair job as some of the ones above.

Piston Pin Noise

Piston pin noise is similar to valve train noise. The noise is unique because you will hear a double knocking sound caused by the lack of oil and excessive clearance between the piston pin and the piston. A piston pin attaches the connecting rod to the piston. It is lubricated by oil which is sprayed onto the pin through a hole in the opposing cylinder’s connecting rod.

This condition can only be remedied by replacing the piston pin bushings, possibly even the piston itself, along with solving the oil pressure or lubrication problem. Problems like this are usually a result of worn connecting rod and crankshaft bearings which reduces oil pressure. If you have this problem, it will result in major engine work in the four figure cost range.

Whining Noise

A whining noise when an engine is running is usually an indication of a bearing that is on the verge of failure. This noise will increase as the engine RPMs increase.

Remember, though, that there are multiple places in the engine where bearings are used. Thus, there are several items under the hood that can make this kind of whining sound. The water pump, air conditioner clutch bearing (which will only be heard when the compressor is not engaged), fan belt idler pulleys or belt tensioner, alternator and the power steering pump – these are all possible sources for whining sounds indicating future bearing failure.

Spend a little money now to save a lot of money later.

slyfox35:
Best friends or closest friends as some people term it is quite normal in the life of 80% of world population, I had one too.

We grew up as teens together, matured as adults together, he came to our house always and ate all his meals with us. My mom was really nice to him when she was alive. He wore my clothes and never returned them. I did not ask because my parents always provided for me although they were average citizens.

Then the worst thing in my life happened. I lost both my parents within the space of four years.
Things turned downhill for me (orphans do suffer a lot.. Too much suffering for you to believe there is even God in heaven who takes care of the fatherless and motherless).

My friend travelled to an African country. He kept telling me to come over there to work that things are better there. I kept declining but after a year of constant pressure, I decided to man up, packed my bags and travelled to meet him.

Guess what? I did not stay up to 5 days with him!!!

His attitude changed by the second day, he yells at me at every given opportunity, from his best friend, I turned to his boy, the heat he was given me was so bad that when he leaves the house and he comes back, I get scared just by hearing his footsteps. I virtually turned to a nonentity to him. I had no money on me because the little I had left, he collected it when I arrived. I knew no one, I felt so miserable and alone and I started regretting why I left Nigeria.

On the fifth day ,I woke up early in the morning and shook him up. I don’t know what got into me (but I am glad it did), I told him I can’t stay with him anymore and I want to leave. He did not even feel bad about this, he did not think of the fact that I know nothing and nowhere in this country. He let me go.

I packed my bag amid tears and went into the street. Mind you, I had no one to call back in Nigeria... It was tough on me but as a naija guy and as God will have it, I did not spend even a night on the streets. I was shocked that a total stranger took me in, clothed and fed me. He taught me everything he knows. I worked for 6 months and was able to make 2 million Naira. This was like a dream to me (If you get money ehn, to praise God Dey sweet o)

I came back to Nigeria, rented an apartment, furnished it and continued working from here.

This so called best friend of mine saw my posts and pictures on Facebook and video called me to check on me (I guess his eyes did not believe what he was seeing) he asked me if I am in a hotel, I said no, I am in my apartment. He was shocked (me I nor keep any grudge against you) he told me he was coming to Nigeria and that I should please forgive him and forget everything that happened. I told him I can forgive but can’t forget.

What surprised me most are this exact words he said “my guy, if I come, na your house I go relax first abeg”

Now my fellow Nairalanders, I am asking, how should I go about this?

I have forgiven him but should I allow him into my home?

Bro avoid those who avoids you in time of needs.

Bukenzie:
Please can someone bail me out, my front suspension always shake whenever I accelerate and the car is picking up, I mean anytime I accelerate, the front tyres will shake for few minutes and stop what do I need to change

Factors involved are from brake disc to bad brake system.
Then the suspension system.
You need a proper comprehensive diagnosis

https://www.nairaland.com/5770914/mechanic-roundtable/3#89670238

More on EVAP system

EVAP - Evaporative Emission Control System

What does it do?

The Evaporative Emission Control System (EVAP) is used to prevent gasoline vapors from escaping into the atmosphere from the fuel tank and fuel system, which is re introduced into the combustion chamber to be used. The EVAP system usually requires no maintenance, but faults can turn on the Check Engine light and prevent a vehicle from passing an OBD II plug-in emissions test


The code is common with Honda Accord, CRV, civic, Honda P1457 code is usually caused by the vent valve on the charcoal canister located under the car, near the fuel tank

Causes of P1457 Code on Vehicles

If the EVAP system fails the self-test at least twice it will turn on the check engine light (also known as CEL or MIL).

Typically code P1457 on vehicles does not really impact engine performance. Even though the engine runs without any performance decrease, it is recommended to get code P1457 fixed as soon as possible.

The most common problem that will trigger P1457 fault is Honda EVAP canister vent shut valve. The valve usually gets stuck due to corrosion or leaks.

Defective 2 Way Bypass Valve. 

Damaged or crimped vacuum line to the charcoal canister

Symptoms
1. Check engine light
2. Fails emission control test.

iamauxin:
It's always at a price...
Is it different from the normal?

Yes with a lots of logistics now involved.

iamauxin:
Can someone transport a purchased car from Lagos to South East in this lockdown period

Yes at a price

HammedOlanaija:
Sugar aunty
Shey she fine wella sha
Because for my life I never someone as old as that dating a small boy like you

Baba make I burst yhu she had a boyfriend in school then but she practically just like me then and she go dey beg me make I no leave her.. we had a sexual relationship to the time she marry around 2012... Till date I no weda we dated or I was just a sex object to her. But to be frank since then I don't seem to enjoy dating young gals bcuz of Dem wahala and dramas. All my life the best relationship I have had re with ladies older than me. The most irreversible mistake I did again was when I was doing my compulsory one year service the lady I kind of date and loves was older than me and the mistake I did was not following her to akwa ibom till date... I missed everyday until now since 2012 ooo

https://www.nairaland.com/5770914/mechanic-roundtable/3#89635021


More on a bad or failing timing chain/belt

[b]Timing belt or chain[/b]

The timing belt is an internal engine component that rotates the engine's cam and crankshaft in sync and ensures each cylinder fires at the appropriate time. The timing belt is located under a timing cover and is in the front of the engine. However, it is subject to incredible forces inside your motor and will need to be replaced eventually. Without a fully functioning timing belt, your engine will not run.

Not all engines have a timing belt. The timing belt is commonly found in cars and SUVs with smaller displacement engines. When an engine has a larger bore and stroke, most automotive manufacturers utilize a timing chain system that replaces the rubber belt with a metal chain. Generally, timing chains last longer than timing belts, with some rated to last the lifetime of the car. Most automotive manufacturers have a predetermined recommendation on when you should replace the timing belt, but there are a few warning indicators that a problem exists.

Some of the typical damage done to a vehicle with a broken timing belt includes damage to cylinder head hardware (rocker arms, push rods or valves), damage to crank bearings or the oil pump inside the oil pan.

Symptoms of a failing or bad timing belt or chain.
1. You Hear Odd Noises Coming From The Engine

2. Your Check Engine Light Is On And Flashing

3. Your Car Starts Hard And Occasionally Misfires

4. You Notice A Loss Of Power And Your Car Runs Or Idles More Roughly Than Normal

Note: Generally, timing belts should be replaced every 60-80,000 miles. Check your car’s specific manual for service intervals.

HammedOlanaija:
6 yes
Aye Mi oooo
And you say that one is not sugar mummy Lol
My friend you are a joker

Lol baba na sugar aunty I dated joor

izzou:
[color=royalblue]

I remember one Christ embassy pastor I gave this lie.

After we ended the trip, he held my hands and prayed for me, asking God to uplift me in the hustle



It wasn't easy holding back the laughs[/color]

I remember carrying a lady from iyana ipaja that year going to rainbow junction or so. Omo na so Uber map carry me pass unconnected roads oooo instead of the wise me lol to ask the lady I dey form say I Sabi road not until I reach where road stop na him the lady they ask me say we Don reach? Na dere I know say na one chance I enter bcuz the lady no Sabi road too. Omo come see asking that night I almost reck the car sef... Last last we sha reach... I paid my dues to all these your and police and lastma too but dey careful to handle the situation with them..

Bigleaf1006:
So I can go and start looking for trouble in Oshodi?

Nah beta friend u be! Oya MC, thunder fire you dia... BlackBishop got my back

Oga no be so ooooo...
The fact I lived there has actually help to understand them better and how to handle them it's all about mutual respect here. Believe me they re just hungry lions for who no Sabi Dem... No follow Dem fight or insult them... If that one no dey the rest na story

stephenwa:
Hmmm...My people..Police almost cashed out
on me today.
I drove out today make I hustle Small..I drop off a rider at a hotel in Oshodi..her bill was 2,400..she paid...on my way out to connect to express way...3 Police men jumped from no where...stood at my front..shorting make I stop there...I stopped...he ask for document..I gave him..he ask me to come down and open the boot..I did..next was...I took 1 way..I told him..but keke just past same road now...they said keke is 3 leg my is 4 leg...they showed me the 1 way sign...which I accept I was at fault...i pleased with him to give me my car document and less Settle the issue...that I have to work no time...I was willing to drop the 2,400 the lady paid...but the police officers gave me bill me of 260k or they will take me to local government...the price got me so MAD...after dragging up and down.. We finalize will transfer 80K...they agreed..I told them I want to get my phone from the car for me to do the transfer...in my mind was..where will I get 80k for this Coro season..next that came to my mind when I got to my car was to ZOOM..My brother Behold...I ZOOMED off oo..i cut street to street till I find my self at Oshodi express to airport road...I fire the car till I got home...my photo copy vehicle document is still them..that is how I work for today... I can't come and kii myself.

Not to brag myself but if anytime they do that stuff with yhu for oshodi I can rescue you abeg no let anybody chalow you for oshodi.... Na threat Dem sabi. Local government guys dey respect person. Just no follow Dem fight or argue

https://www.nairaland.com/5770914/mechanic-roundtable/3#89599765

More from the stable of B-Automobile Nigeria Limited

HammedOlanaija:
Bishop bishop lol
The sugar mummy hunting geng

Baba no be so.... I don't do sugar mummy ooooo lol

I just love matured ladies and not our social media geng and parasitic gals out there

My first girlfriend back them was six years older than I, I was ssce graduate while she was an ND holder and it was one fine experience and so many like that.
I just felt relaxed when am dating them.

StarMonkey:
Hello boss, please do you have an idea how much it'll cost to change oxygen sensor in 2007 Hyundai Santa Fe? Thanks

How many of the O2 sensors?
But each will cost you #30,000

Absolutely.

There is nothing wrong if you understand and trust each other.

I love them old

https://www.nairaland.com/5770914/mechanic-roundtable/3#89599765

More about the thick smoke coming from the exhaust

B-Automobile Nigeria Limited

Good day famz, this is a question I get from a customer and am going to be bringing it here to teach you how to handle such issues.


Frequently Asked Question about White Smoke From Exhaust
Why My Car Has White Smoke From Exhaust When Starting?
White smoke can be caused by many reasons. But if you get white smoke from exhaust at startup, it might be from these reasons:

A cracked or warped cylinder head.
Head gasket failure
Cracked engine block
One of the most common cause, cracked engine block may allow coolant to leak inside the engine combustion chamber and cylinders, which is very dangerous and requires special attention.

What Causes White Smoke From Exhaust When Accelerating?
The answer is either transmission fluid or burning coolant.

In transmission fluid case, the engine is sucking the fluid through a vacuum hose, which leads to the color white from smoke. The exhaust will also have a burned oil smell. If the white smoke is coolant, your car is definitely having a crack in the cylinder head or a leaky head gasket, along with a sweet smell.

In this situation, you can pressure test the cooling system if the coolant is low or the engine has been overheating. If it does not, your vehicle is mostly having a leaking gasket. You need to replace in order for it to work normally again.

When the fluid is the problem, drivers can fix by replacing the transmission vacuum modulator valve. Also, notice its level: If it is low, you can add the required type of fluid to restore the level.

What Causes White Smoke From Exhaust Smells Like Gas?
Drivers must understand the concept of smoke from cars. Usually, it is water vapor or steam, since it is introduced into the chamber. For that reason, you will have the water dripping from the tailpipe. Drivers can also see the water in the fuel or a leak in the head gasket.

You might think it is normal, but that is the engine misfiring and pushing raw fuel out. In those cases, the car will be running rough and drivers can smell a raw fuel smell.

In order to fix this, just check the fuel injection system and replace the necessary parts if necessary.

What Causes White Smoke From Exhaust When Idle?
If you have white smoke from exhaust when stopping or idling, your combustion chambers engine might get oil inside, which cause them to burn off the exhaust. This will cause white smoke, along with the idle issue. This is very easy to recognize since there is a difference between burning gasoline explosion and a burning oil explosion.

This problem should be fixed soon since the longer the oil stays inside, the more damage it causes for the spark plugs, which might require replacement.

What Causes White Smoke From Exhaust When Cold?
In the cold weather, the white smoke can be quite normal, but in some situations, it is not. Continuous white smoke while driving is one of them. If you are having a diesel, white smoke may be unburned fuel or coolant going through the engine. But mostly, it is the incorrect injector timing in the cylinders.

What is the difference between White Smoke From Exhaust Diesel Engine and Petrol Engine?
White smoke from exhaust diesel and petrol engine may be the signal of different car problems. Let’s check out these probable reasons that cause white smoke from exhaust issue.

Diagnosis

Diesel Engine

Common Causes
Leaking coolant or water dripping into combustion chamber • Bad head gasket
• Cracked block or cylinder head


Petrol Engine

Common Causes
Incomplete air/fuel
mixture • Faulty fuel injection system
• Incorrect fuel injection and valve timing
• Engine overheating
• Faulty fuel pump and/or injection pump

[quote author=radautoworks post=89590022][/quote]Sorry ma'am I don't speak Persian

Buharifan:
Please where can I get GMC mechanic in Ibadan to fix my GMC Acadia for me?

What is wrong sir?

[quote

calabaman:
Good evening auto gurus.

Please who has any idea how much is the following items for civic 07:

-- Back shock absorbers(left n right)
-- Fanbelt adjuster

The price may vary According to some seller
Back shocks new ones will be 12k
But UK used as it is refer to will go for 6k max
Fan belt adjuster is 4k the last time I bought it

Simple diagram of how your tranny works

Billiebaba:
I would like a logical explanation to your thoughts. He said the plug on that cylinder is not working, I'm bending towards the circuit of that coil on that cylinder, power, ground and signal to that coil.

I worked on one EOD with such wahala only to detect a bad piston to be causing the misfire at the end.

Kidah77:
Pls I am also experiencing issues with my 2005 toyota sienna transmission. when in motion gear selest from 2 to 4 rapidly and disengages on its own then re-engage by itself after 30seconds. What may be the problem?

The culprit here will be your shift solenoid, but I will be of the opinion of scanning first let me know the code