1. I was in Abuja some few weeks ago, to fix a Toyota camry 2002 vehicle.
The customer had complained of a terrble loss of power, and excessively poor fuel economy, accompanied by misfires on every startup and acceleration.

2. Diagnosising the vehicle, we discovered the following:

a) cylinders 1-2 were misfiring(P0301-P0302)
b) removing the ignition coils on cylinders 1-2, to access the spark plugs, was a suprise.
c) the ceramic insulation on the threaded part of the spark plugs were just dangling in there.
With the insulation not affixed to the threaded part(which acts as the chassiss ground), sparks generated from the ignition coils will not be able to be ignited directly in the combustion chamber for proper ignition.

d) stucked threaded spark plugs on cylinders #s 1-2, which could not be removed using a 16mm socket wrench.

e) all the fuel injectors on cylinders 1-2 were dirty(fouled with carbon deposits).

f) all engine mounts degraded, to the point where their aluminium parts were in contacts with the engine.

g) the ignition coil boots on those cylinders(#s 1-2), were missing.

The Fix!?
Well, here was how we fixed it.
1. Because of the inability for the spark plugs removal, the only best bet for us was to remove the top cylinder, and have it transported to a tuner in Apo Me hanic village, to have them removed, and the 16mm spark plug threads rethreaded.

2. All the spark plugs were replaced with new ones at #2k/spark plugs.

3. Cleaned the fuel injectors, and tested them for functionality, using a split second application of 12V battery on their terminals.
The spark plugs MUST make clicking sounds to signifify they work.
No sounds, means they are bad(not working).

4. Replaced all engine mounts.



End!

PS: Always ensure that the ignition coil boots on all your coils are available.
Their availability on ignition coils is to prevent dirts, and water(moisture) from entering into the spark plug boots.
Water intrusion in to the spark plug ports, would cause rust in between the threaded sections of the spark plugs, and the top cylinder spark plug port.

Do not buy substandard spark plugs for use in your vehicle.
They may offer some kind of temporary fix, or relieve from issues, but in the longterm, you might suffer from a major labour intensive tasks, that would have being earlier nilped in the bud.



Regards,
Joseph

Take a look at how different the spark plugs are.
From L>R: bad spark plugs without their threaded metal portion shown; threaded metal portion shown

I am very sorry everyone.
I have being trying to post pictures on this thread, but there appears to be a problem on here.
My picture sizes are nax 1.4MB, and still can not successfully uoload them here.

Another sample

Take a look at the port where one of the stuck threaded spark plug is.
This is the bad one

Here is an exame of how a good spark plug port looks like

can i get your number? want to make an inquiry

thank you

Here is the top cylinder of the engine removed.
Please always inspect the piston rings by shaking the piston top for any unusual play for signs of piston ring wear, before installation.
You would not want to installation the top cylinder, and later find out that the piston rings are worn out.

Here is how the faulty spark plug ports looked like when top cylinder was removed.

Shows the top cylinder spark plug ports where the bad one and the good ones are compared.

@dayjeee. It is on my signature

@TRGO are you still In Abuja?

@dozieson. No, i am not in Abuja. I travelled to the city of Kano, last week, but would be heading to Kogi state this week.
You want us to meet, or something? Any job for us abi how oga?
If work de, let me know, i might stop over in Abuja.

TRYGO:
@dozieson. No, i am not in Abuja. I travelled to the city of Kano, last week, but would be heading to Kogi state this week.
You want us to meet, or something? Any job for us abi how oga?
If work de, let me know, i might stop over in Abuja.

Thanks for the update. I though your were partly based in Abuja

Na to buy toks engine