Help, Compression!
 

Hi Guys,

Wondering if any of you all can help me (Please)!

I have a 1988 2nd Gen RX-7. The car was supposed to have had a rebuild around 5000 miles before I bought the car.

Anyway, currently the car starts from hot and cold first time and holds idle well and consistently at 1000 rpm. However, it does sound a little rough. I used a rotary comp tester and the results are 7, 7, 7 bar compression @ 240 rpm on front housing but rear housing is showing an absoloute 0 compression on the compression tester on both the leading and trailing plug holes. We tried this with two different comp testers and got same result.

Would anyone happen to know just what is happening. I have heard that maybe squirting some premix through the plug holes may help!? Anything else??

Any help would be very appreciated.

Many Thanks.

who did the rebuild? but if it was just rebuilt alot of times the engine needs to build up compression..so you put oil in the plug holes to help with that...