J Taylor Posted April 19, 2002 Share Posted April 19, 2002 If for some reason my car has jumped time and the cam timing is now off could this cause the vacuum to be low as well. My boost gauge is only reading like 11 vacuum at idle. It used to read 15 or so after I put the ported head and crane cam in. When I started having this problem with it it was reading only 11. I cannot find a vacuum leak anywhere and have checked everything I can think of. It seems to be acting the same way my 84 300zx turbo did when the timing belt was off a tooth. It had a bad idle and busted up bad when making any boost. I was second guessing myself when I put the timing chain on this time and I am thinking this may be my problem. Ideas? Thanks, JT Quote Link to comment Share on other sites More sharing options...
DAW Posted April 19, 2002 Share Posted April 19, 2002 It's easy to check. Pull the valve cover and have a look. Bring the crank around to TDC, with both lobes for #1 cyl pointing upward (compression) and look at the indexing marks. DAW Quote Link to comment Share on other sites More sharing options...
J Taylor Posted April 19, 2002 Author Share Posted April 19, 2002 Well **** , so much for that theory. LOL. Timing lines up perfect. I'm starting to think I'm just **** out of luck. If I knew it was somewhere in the FI part of the electrical I would go ahead and get a fuel management system which I am going to do anyway. I would just really hate to do that if that's not the problem b/c then I am adding more stuff to mess with on top of the original problem. Grrr. What a pain. JT Quote Link to comment Share on other sites More sharing options...
Guest Aaron Posted April 22, 2002 Share Posted April 22, 2002 If the enging jumped time, have you made sure none of the valves are warped? Quote Link to comment Share on other sites More sharing options...
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