TwinTurbo.NET: Nissan 300ZX forum - I have been chasing a confusing hesitation problem
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Subject I have been chasing a confusing hesitation problem
     
Posted by ae300z on October 26, 2011 at 10:30 PM
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Message The motor would start fine, idle fine, run fine, pull fine...until I hit 18+ psi. It felt like I was hitting the rev limiter. It would be worse at higher psi. The motor would pull fine if I rolled into the throttle. WOT and 18+ psi it was horrible.
I changed plugs, checked for boost leaks, checked throttle, cleaned MAS, then changed MAS, changed CAS, fuel pressure is good, AFR good. Changed coil packs and bingo. #6 is on it's way out.

notice the "blow out" area between the screw heads on the right coilpack compared with good coilpack on the left.
Photobucket

Hope this helps someone in the future chasing a similiar problem.

     
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