₦airaland Forum

Bad or substandard spark plugs is the first suspect here. Substantand spark plugs did me shege🤣

I strongly suspect your catalyst....go for scanning first

The issue is a small part which is the Mass Air meter… that’s all… change the mass air meter

Hmmm go and change ur ignition plugs service ur injection nozzles and air censor on the manifold thank me later

Sell it for scrap pickers 100k

He bought same from someone na. It's normal to buy Nigerian used car with it problem, it's wisdom to sell the car ASAP once you realize you can't manage the problem.

Cc

Dammyclef

Clemss88:
ok he should sell the problem to another person Nigerians and wickedness

McLizbae:
Bad or substandard spark plugs is the first suspect here. Substantand spark plugs did me shege🤣

Were all the plugs bad at same time?

Dammyclef:
Good morning sirs please I need your help ooo My Lexus rx 330 is sucking fuel and also doesn’t fire sometimes when I accelerate on speed it doesn’t pick on time.

The rpm won’t pass 2000rpm after some delay it’ll just pickup immediately… idk what’s wrong, I’ve changed the plugs, coils, nuzzles, injectors mouth, fuel pump… yet there’s no changes. I bought o2 sensors too it didn’t stop I changed the brain box it didn’t stop….

The black smoke on my exhaust is very thick.

What can I do please! Should I just sell it ?

every part you have changed in the car in not necessary as such. It's either ur mechanic doesn't know how the car works or he's aware and just fleccing you of ur hard earned money .
I will advice you take ur car for an auto scan
But.......
1: burning fuel and black smoke from exhaust means ur car is burning Rich ( there is an imbalance in the car's fuel - air mixture or stoichiometry. The normal ratio should be 1 unit of fuel to 13 unit of air for combustion to be adequate... dats 1:13. So for thick black smoke, that means ur car probably runs at 1 unit of fuel to perhaps 5 unit of air)
So your car is burning excess fuel as compared with much lesser air than normal.
Now when ur engine is burning excess fuel than normal without the driver stepping on the gas pedal to increase the need for it, ur ECU gets the information from ur O2 sensors and catalytic converter of the excess fuel to adjust back to normal. Now if the black smoke problem still exist, it likely means ur CATALYTIC CONVERTER and O2 sensors are bad or non existent and also ur ECU.
2: VEHICLE not accelerating when you need to:
Dis is a problem of ur throttle body being inadequate, bad, clogged or dirty. So it's not opening adequately enough to allow much air into the engine to balance the fuel coming in.
Also it can be dat ur acceleration pedal actuator or sensor might be stuck to activate the throttle body to function or there's a bridge in the wiring connections to the pedal, ECU and throttle body sensor.
It's also important to note that the throttle body and the air idler valve in a vehicle controls a vehicle's RPM....so I am guessing ur engine might be rough idling as well which will also confirm that ur engine is definitely misfiring.
With misfiring, you may need to look at ur engine combustion chamber:
a: ur engine intake valves for air or fuel might be stuck open or closed either partially or totally.
b: ur timing for combustion might be incorrect.

SOLUTION
I would advice you go to a professional automechanic to Scan ur vehicle. But if you don't want to scan oooo
Then FIRST do a servicing of the throttle body and the entire AIR INTAKE MODULE ASSEMBLY, this also involves ur engine air filter ....that should fix ur RPM problem and black smoke problem.
Then SECONDLY, should the black smoke still exist which l doubt, then you may need to do a COMPRESSION TEST and a LEAK DOWN TEST, check out the engine intake valves, compression rings,timming chain,etc.

I hope this helps?
That's the little l know so far.
Coming from someone who trained and graduated as an automechanic but doesn't practice 🤣🤣

Whois:
He bought same from someone na. It's normal to buy Nigerian used car with it problem, it's wisdom to sell the car ASAP once you realize you can't manage the problem.

Cc

Dammyclef

but why don't he try giving a professional, then after the repair he can sell it than selling with the problem

I met a man at mechanic shop last weekend, when we started gisting, cos I came with Lexus rx300, he condemned lexus cars and said he can never use it again. when I asked why..
He claimed his rx300 engine knocked on him while he was travelling for a burial, that they haven't even left Lagos.
After the check, he said it was caused by blocked Catalysts converter.

Your catalyst converter must have been stolen and a substandard quality replaced.

How much do you want to sell
Reach me on:09078463854

How long have you been using it?

Put a catalyst to reduce the consumption of fuel

Clemss88:
but why don't he try giving a professional, then after the repair he can sell it than selling with the problem

FYI: You can't teach someone how to spend his money

Service the injectors nuzzles. It's clogged with dirt. Then add more to d ignition rotation. And finally buy new plugs to replace d old ones.

Fuel pump / Nozzle / Oxygenator

Change the engine oil to a high grade oil. Don’t buy cheap poor quality engine oil. Then buy fuel tank cleaner. I have just forgotten the name but it helps to remove sludge in fuel tank. Make sure the tank is half full and the engine is switched on before you open the tank and pour the cleaner in it. Let the engine on for five minutes and you can switch off after that. You might have been getting engine service light on your dashboard for this problem.

change the MAF sense and come and thank me with red wine....dont change anything aside thAT,

1. All plugs rarely go bad at the same time. But with one defective plug, your car (especially 2000 upward) can really act up.

2. When one is defective, you need to change all plugs for some cars to balance the spark. Else the car will not run normally.

3. The plugs available in the general marketplace are mostly substandard plugs and some cars are really sensitive to it (my case). You just need to get OEM plugs which are very expensive, for some cars to run properly. At that time (2020) the OEM plugs (set of 4) I finally got was almost 50k, and the substandard marketplace set of 4 plugs was 4k then.

3kay945:
Were all the plugs bad at same time?

Dammyclef:
Good morning sirs please I need your help ooo My Lexus rx 330 is sucking fuel and also doesn’t fire sometimes when I accelerate on speed it doesn’t pick on time.

The rpm won’t pass 2000rpm after some delay it’ll just pickup immediately… idk what’s wrong, I’ve changed the plugs, coils, nuzzles, injectors mouth, fuel pump… yet there’s no changes. I bought o2 sensors too it didn’t stop I changed the brain box it didn’t stop….

The black smoke on my exhaust is very thick.

What can I do please! Should I just sell it ?

U have been meeting the wrong mechanics...
And spending money....

Just ask your mechanic to check your Airflow sensor and change them...

Come back and thank me later...

Check your exhaust if it is not blocked....one of your catalyst converter must have expired.

A sensor is dirty or faulty. Most likely the one on the exhaust close to where it is connected to the engine block. Pls scan it before any further work is done on it. May be One of the plugs coils is bad.

McLizbae:
1. All plugs rarely go bad at the same time. But with one defective plug, your car (especially 2000 upward) can really act up.

2. When one is defective, you need to change all plugs for some cars to balance the spark. Else the car will not run normally.

3. The plugs available in the general marketplace are mostly substandard plugs and some cars are really sensitive to it (my case). You just need to get OEM plugs which are very expensive, for some cars to run properly. At that time (2020) the OEM plugs (set of 4) I finally got was almost 50k, and the substandard marketplace set of 4 plugs was 4k then.

Nice explanation, what say you to those Toks plugs

Someone suggested those toks to me at some point, but they said I'll need an expert rewire (car electrician) to get a healthy set for the car. Well, Iwas already frustrated at that point (bought new sets of substandard plugs 2x), and just close my eyes went for the new OEM.

3kay945:
Nice explanation, what say you to those Toks plugs

mass Air flow or blocked Catalytic converter could be culprit

Dammyclef:
Good morning sirs please I need your help ooo My Lexus rx 330 is sucking fuel and also doesn’t fire sometimes when I accelerate on speed it doesn’t pick on time.

The rpm won’t pass 2000rpm after some delay it’ll just pickup immediately… idk what’s wrong, I’ve changed the plugs, coils, nuzzles, injectors mouth, fuel pump… yet there’s no changes. I bought o2 sensors too it didn’t stop I changed the brain box it didn’t stop….

The black smoke on my exhaust is very thick.

What can I do please! Should I just sell it ?

Visit www.carmedis.com

Very overrated useless vehicle

Your top cylinder has faulty valves

Good Evening my people. Please I need your help on my 1998 model mazda xedos 9 which have been in the mechanic workshop since January ending. My wife normally uses the car for school run and then to school,no much stress on the car because it barely covers 70km in a week.
We noticed that the car will start normally in the morning but once it heats up and you switch off the engine, it can never start again until it is cool.
Secondly, even if it gets cold but under the hot sun, the security alert red light on the dash board won't blink while trying to start the car and as such the car won't start until that red security comes up late in the evening or night.

At first I thought it was a minor electrical fault but I have changed brain box censor, key ignition coils and fuses yet it still happens. The car will start up normal cool in the morning and when you drive for about 5 to 10 mins and mistakenly off the ignition, the car can't start again until it cools and not under the sun.

This has been my worries and I wish anyone can help me with what actually is the fault . Thanks

You may have dealt with a very bad one. But generally the vehicle is a bullet proof. I have guys used it for many years with only regular to minor fixes.

Decryptor:
Very overrated useless vehicle

derosario11:
Good Evening my people. Please I need your help on my 1998 model mazda xedos 9 which have been in the mechanic workshop since January ending. My wife normally uses the car for school run and then to school,no much stress on the car because it barely covers 70km in a week.
We noticed that the car will start normally in the morning but once it heats up and you switch off the engine, it can never start again until it is cool.
Secondly, even if it gets cold but under the hot sun, the security alert red light on the dash board won't blink while trying to start the car and as such the car won't start until that red security comes up late in the evening or night.

At first I thought it was a minor electrical fault but I have changed brain box censor, key ignition coils and fuses yet it still happens. The car will start up normal cool in the morning and when you drive for about 5 to 10 mins and mistakenly off the ignition, the car can't start again until it cools and not under the sun.

This has been my worries and I wish anyone can help me with what actually is the fault . Thanks

This supposed to be minor issue for those that know how!

But very big if you don't know.

I wish I can help. I will love to know the solution eventually

Ojuntana:
Diabetes for leggediz benz? How?

I even thought hypoglycemia will be a risk

Add better sun burn and depending on the colour of your skin , the compulsory sun tanning, if na woman you be , better yam legs