no compression in cylinders

[eltracer]

Was driving my car fine the previous day then went to start her up the next morning she wouldn't fire up. Checked spark and fuel and was getting both. Then check compression and I had no compression in 4,3,2 cylinders and had 110 in the #1 cylinder. I didnt the test with the cold motor. What the hell could have gone wrong? I had a jdm 6bolt in my 94 gsx. Only had the damn motor for 2 months and took all the precautions and only raced it a few times at the track. What do you think the littlest thing and biggest thing it could be? if there even is a little thing in this case.

 

[92awddsm]

bent valves, broken or sliped timing belt.

 

[leet]

Yeah, I'd pull the valve cover to see if you have any dropped rockers. It's like a 2 minute check.

 

[eltracer]

thanks for the tips guys. looks like its coming down to timing. Any reason for a timing slipping? or jumping teeth?

 

[Defiant]

The greatest stress on the timing belt is at starting, followed by idling. It's where the shock of the valvetrain is most strongly felt at the crank sprocket. You're likely to find teeth sheared from the belt.

 

[eltracer]

What are the chances that my pistons are salvagable and dont need replacing? Thinking there still good since my timing belt is still intact and one cylinder servived.

 

[92awddsm]

Pistons are probably good, but the exspesive part is the valves. You probably need to replace at least 6 and a valve job to go with it.