hello
i just boght a 92 3000gt dohc in mint condition.the guy told me that the timing slip and thats why its skipping.the car starts up fine but he said when it slipped he hered it let something loose. i no i have to check my compression for the valves but would there be any other things to check?the oil pressure was low when he wa driving it could that have been a problem? any help would be great.

 

Do a compression test for sure. Does the car seem to run OK? You could always pull the upper timing belt covers, set the crank to TDC and see if the timing marks on the cam gears line up...

 

yea the engine seems to run fine it starts right up and studders but ill do what you said and go from there thanks

 

i had a minute and check the spark on the car,i pulled the plugs from the coil pack 2 and 5 had no spark when the car was running,i also changed coil packs and it was the same .any ideas?

 

Either the PTU is bad, or the ECU is going bad.

 

how sure are you on that.the guy i bought it from said he thought the timing slipped would that cause the computer to go bad or is there any relation between them.is there any pages online on how toset the timing ? thanks

 

http://www.stealth316.com/2-ignition-timing.htm

Even if it is out of time, the coils will still fire.

 

i put thecrank to 5 degrees and the cams are of about 1 inch and ahalf offbut i changed the computer and the engine runs great with spark on all cylinders.thanks for the help thestealth it is much appriated any idea on the timin though and why the car would run so well

 

All 4 cams are off that much? Wow, honestly shouldn't run well at all...that's weird.

Here is a picture of how the cam timing marks should line up.
http://img.photobucket.com/albums/v6.../60ktune04.jpg