zack_280 Posted November 20, 2005 Share #1 Posted November 20, 2005 I bought a 240Z in Little Rock, AR last month. It has had some engine work done including a new Isky Stage III cam, E31 head with '81 ZXT block and flat pistons. (Note this is what I was told when I bought the car and I am assuming that what I was told is correct) The engine was built 4 years ago by Radatz racing in Atlanta. It has approximately 5,000 miles on it. It was running rich when I bought it (and it still is). I just did a compression test and came up with the following numbers:Cylinder Compression 1 25 (Plug looks like it has a film of oil on it when removed. I added some oil and that raised the compression to just under 30psi) 2 195 3 195 4 205 5 195 6 205All of the other plugs will build up a film of carbon within ten minutes (the time it takes to warm up before the test).I am looking for any suggestions. I'm not really sure what I might have to do to fix it.Thanks in advance.Zack Link to comment Share on other sites More sharing options...
sideshowbob Posted November 21, 2005 Share #2 Posted November 21, 2005 Burnt valve. Link to comment Share on other sites More sharing options...
Fun_in_my_z Posted November 21, 2005 Share #3 Posted November 21, 2005 Hey Zack. Where in Little Rock do you buy it? Did they have anymore?It sounds like a valve to my also Link to comment Share on other sites More sharing options...
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