Ok long story short my father gives me a 2000 gtp 3.8 supercharged before he had the piston replaced and told me he felt the car never ran right since then.
I notice about 3 weeks ago its running real rough when trying to take off it stutters. i check around and notice the vaccum line tee to the super charger/intake manifold was cracked so ordered new from GM still get a rough idle so i clean the coils check the plugs and notice the front left cylinder spark plug is completely bent in(WOW) almost like it was dropped when being reinstalled after new piston and rings put in. So i changed all the plugs car runs smooth again oh got a p0300 (cyl misfire) but after fixing that plug that went away. Then she stays quiet for a day then i get a p0113(ect circut low) noticed car never rose above 70 degrees so low and behold i found out the thermostat was stuck open all the time, replaced and made that code go away.Then the nice car just as i recheck all my tools are put away i notice my idler pulley for SC AC is completely gone and belt is just laying on top, So i run to the GM and get a idler pulley pop that on and good to go again she stays quiet for a day and what do you know the magical check engine comes on again p0114 (ect circut high) found out yellow wire at connect direct on ect sensor was pulled right outta the terminal so the pcm had no idea what temp the car was actully running at, so soldered that connection light goes out happy happy and now tonight the big one.
always heard a chatter around the supercharger front left did some research most people say it was the coupler inside, I was starting to think that. until i pulled away from work tonight and that rattling noise was really happening now louder then before and little white smoke coming out exhaust check engine light comes on and not only does it come on i can only do about 40km/h and stutter is crazy but get quieter around 1600 rpm. i pull over and take off the supercharger /AC/tensioner/idler pulley/ belt and notice that the noise is still there(Damm not that coupler like i thought) let it idle for a 10 mins to find where that knocking sound is coming from i get the flashing check engine light now which means shut down time. But it never did so i figure why not lets check that 1st front left cylinder spark plug lets see if its bend in again, well after trying to change a spark plug in the middle of the night just to get home work i noticed that the spark plug was filled with oil sludge and completely detonating black so i go buy a new one car runs better enough to get me home but that rattle sound was so loud i pretty much struggled to get to 60 but after that car was smooth all the way up to 120km/h to get me home.
oops forgot something don't know how ****ing car been ****ing killing me i was pulling into GM to get the vaccum line way back then hop back in the car and get a low oil light which was strange i have a look and she was only down a little bit maybe half a quart i fill her up and lights gone now before the rattling that light came back on again low on oil so i fill her up wondering where the hell the oil is going there's not a leak on the car and absolultey nothing in the antifreeze rad or spill over container. (yay no head gasket leak at least) but now i notice the oil is going directly into the resonator exhuast which means its getting into the combustion chamber then out the exhuast valve.
all this happens in a span of 2 weeks well now iam stuck here and asking any suggestion which might be happening to my 1st piston the check engine light is on and sometimes flash but wont get access to my scan tool till tomorrow to pull codes.
thinking that there"s oil all over the spark plug that must mean i got a piston ring gone correct? is it possible to get oil in there if the piston was chipped from the first time the mechanic replaced it and then it bent the spark plug, funny thing now is its not bending the spark plugs now. but just to do my short trip home that new spark plug is toast thank god they come in 2s lol. is it possible that it could be the head or a rod could cause this sound and oil getting in?
Any suggestion would be very helpful cause iam at wits end with this car right now.
