Spyder Engine Problems

[MCTWISTED]

So I went under the process of rebuilding my engine. It went fairly smoothly until I dropped it in the car and tried to start it. It had low compression in 2/4 cylinders. I ended up taking the head off and finding out it was a faulty intake manifold gasket. I then put a new one on and put it back together then compression tested it to see if it fixed the problem. It now has no compression in all 4 cylinders. I don't know why exactly and was looking for some advice or if anyone else has gone through this problem or something similar.

 

[dwb]

What car and engine is this?

Are you sure that wasn't the head gasket instead of the intake manifold gasket?
When you reinstalled the head and thus reinstalled the timing belt, was there any point where the timing marks weren't aligning but you force-rotated the crank anyway? Or maybe you rotated the crank counter clockwise and caused the timing belt to slip?

The first thing that comes to mind when saying no compression is bent valves from being mis-timed.

 

[MCTWISTED]

I'd have to check the car is on a family members farm property right now. But the car is a 1997 Eclipse Spyder GS-T with a 4g63t 7 bolt.

When I was working on it last the gasket on the intake manifold was messed up and there was a leak where it wasn't fully sealed so a new intake manifold gasket and head gasket where put on and that's when the compression problem got worse.

 

[pauleyman]

If it was just an intake gasket why was the head gasket done? Sounds like somebody messed up the job.

 

[CKOPOCT]

Seems like we'll need a more thorough description of what happened. An intake manifold gasket would not require replacing the head gasket. What led to the decision to pull the head?

Also, there is a specific and detailed procedure for replacing the timing belt - mainly having to do with ensuring the cams don't slip a tooth and that the tension is properly set. After installing everything it is strongly recommended to spin the engine over by hand 6 full crank rotations (3 full cycles) and the double check all of your timing marks (crank, cams, and balance shafts) to make sure they are dead on.