So i removed my driver side head today since i needed to get a couple of the threads redone for a mistake i did.

I took all the spark plugs, 3 are pretty black like they have been used a lot, but one is very clean, like it wasn't even put in the car.

It didn't seem like the car was misfiring or running bad, but i was wondering what that could mean.

That spark plug also had a loose end to it where the wire plugs onto.

I have had the SES light on for a while even after replacing the O2 sensors and everything else is pretty much new on the motor.

Ill have to check freescan to see what codes are being thrown when i get the head back on wednesday.

Im just trying to figure out why 1 spark plug would be really clean while the others look dirty, i mean it is a night and day difference between the dirty plugs and the clean plug.

thanks
Z

 

ding ding Did it looked like it was being steam cleaned?

was the piston really clean too? Ya know what I am getting to ... dont you?


pretty much sounds like you had a minor head gasket failure.... I have seen a couple and oh by the way... the coolant always ruined the o2's.... wanna have that looked into before you add new ones.


Marvin

 

ill definitely take a look at the piston when i get back to work on the car in the morning.

thanks for the reply, ill update the situation later.

 

While your getting threads fixed I would have them make sure the head is flat and crack free.

 

I would 2nd the analysis for a head gasket (the water cleans the combustion chamber) or your plug wire isn't working and you just got a bunch of fuel and air to clean your plug. Take your pick.

 

If it was a head gasket, wouldnt you smell it burning out of the exhaust? also, wouldn,t it smoke? Just curious.

 

Only if it was excessive, a very small leak would go almost undetected except for the clean chamber.

 

so i have been having a little smoke out of my exhaust, but i don't think the smoke is white.

i checked the piston of the spark plug that was clean and the piston is in the same shape as the other 3 around it.

ill get the car running on friday most likely and ill see what codes are being thrown since i got my aldl cable.

i put in a new head gasket today, new intake gaskets, made sure i used plenty of silicone on the intake manifold in the front and back, i also used thread sealant on all the head bolts.

only think left is to hook up the intake and the fuel injectors/fuel rail.

thanks for the input though, ill definitely update with the codes to see if any of them explain what might be wrong.

thanks
Zeeshan