okay so here is what has happend leading up to where i am now

the grand am started missing on the way home from work 2 weeks ago. i did some diagnosing and determined it was plug wires as i switch the #2 wire to 4 and the missfire switched. well turned out it was just a fluke and that the wire was bad also. then my freind comes down to help he checks the injectors with a noid light, and the spark with a tester. nothing is looking wrong. we ran out of ideas, and checked the cooing system pressure. with the car off it was holding fine. we fired it up he pressured the system again this time it kept sucking down the pressure with each rev, and we noticed some smoke at the exhaust. so we did the intake gasket it was very bad. we also replace the injector on 2 as it looked bad. got it back together took it out got a mile down the road and the car was running 240* shut it off cooled it down and reblead the cooling system. all good now. took it out again and it ran fine for about 8 miles the the miss was back. brought it home shut it off and let the car cool for a hour. came back out and it had no full pressure replaced the filter and the fpr. pressure is good now. but still missing. so we swapped the coil no change (could still be possible as it was a junkyard part). which leads to today. i just got back in from doing a compressing test i checked the front bank and all are right at 180 but when i got to #2 it hit max pressure at 180 i hit the relief on the tester and it blew out a mist that kinda had a coolant smell.


so sorry about the novel but what do you think

An overheated engine will warp the head. It'* very possible the headgasket is gone.


You should really just give me the car so I can 3900 swap it.

i have never over heated the engine before just that one time last week after the limg but it just brought back the original problem on the same cylinder

Do you have chocolate milkshake oil?

no not at all no coolant in oil or viseversa and no usage of either

oh also i forgot the miss doesnt get bad till the car is warm also idk if this is a accurate test for a burnt valve but i tried to see if it would suck my pant leg up the tailpipe and it did a bit on each miss

You would have to have ran that motor pretty hard.

well i was told that and exhaust leak can burn a valve the headers have a leak at the dp and the primary on cylinder 2 ive had them for about 4k miles and i do drive hard but not that bad 1 wot a day

I really don't think you have a burn valve. Have you checked the ICM?

not yet i need to hit up the yard thursday and get one