GP wont start

[nater1]

i have a 99 GP SE, it has 196,xxx miles. i had the head gasket, and intake gaskets replaced. I drove around for about a week after i had them replaced, then about 400 miles to school, and it worked fine, then i went out the next day and it started but was smoking badly and it smelt like burning coolant so i shut it off. I went out later and it woundn't start. it has spark and is getting gas, but it won't turn over. i know it has a bad cps and maf, but those are the only codes. if anyone know what might be wrong plase let me know. thank you.

[grandprixgtx00]

3100 or 3800?

when you did the headgasket, was there oil in the water?

[nater1]

its the 3800, and no i there wasn't oil in the water

[tblake]

So the motor cranks or not? Was the upper intake manifold inspected and/or replaced when the head gaskets were done? Its possible the Upper intake melted and allowed coolant to fill combustion chambers. This could hydrolock a motor and could cause serious issues like bent connecting rods.

If the car doesn't crank, I'd remove the spark plugs and then see if you can crank it over.

[grandprixgtx00]

Originally Posted by tblake

This could hydrolock a motor and could cause serious issues like bent connecting rods.

this is what I was thinking Tim, but he indicated there was no water in the oil. We'll see if the car turns over or not...

[nater1]

it does crank, i think the uim was looked at, but i dont think he took any measurements on it.

[tblake]

If your coolant level is good, and oil looks good, I'd focus on the CPS and MAF codes. Do you have spark at the plugs?

[nater1]

i replaced the sparks plugs, and it runs now, kind of ruff though. i got another code reader on it and said i have a misfire, how can i fix that.

[tblake]

You have to figure out why its got a multiple cylinder missfire. Low fuel pressure, plugged cat, vacuum leak....