fresh rebuild weird compression..

[dsm1996]

What's up...I'm new to the site and dsm this is my first dsm it a 96 gst 2 months ago I spun cylinder 3..did a rebuild got it back in the car would start come to find out the cts was bad replace it car ran sound like it had a bad miss fire sound like a subaru..did a comp test to and got weird readings..#1 0-#2 130-#3 80-#4 120.I think the head might be bad,heard some noise in the head when reving it..info would be helpful..thanks

 

[volcomsnow245]

Timing might be off or head is bad. Might of even bent valves.

I had numbers like this when my old head was tested before I did a rebuild

 

[MichaelSuch]

We need more information. Was the head rebuilt or machined at all? How much run time/miles are on the motor? Were the pistons and or rings replaced during the rebuild? Noise in the head could've just been the lifters clattering. Did you pull the lifters when you torqued the head back down? Check your mechanical timing and make sure you're not a few teeth off.

 

[dsm1996]

The head had nothing done to it..the block was completely rebuild new pistons ring balance shaft delete, oil pump ect
Timing is dead on I check it three times and had two other people check it also..haven't driven it it ran for probly 2 hrs..now it won't idle on its own and the noise comes when u rev it to like 3k..I'm gonna call a machine shop tomorrow to get a price on getting the head tested..

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