TwinTurbo.NET: Nissan 300ZX forum - Misfire woes!
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Subject Misfire woes!
     
Posted by Russell.DiVittorio on October 15, 2011 at 2:00 PM
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Message I am having weird issues. When I start the car cold ie sat over night the car misfires for the first 5 -10 seconds of the car running then smooths out and runs fine. Also if I don't let the car run and warm up to at least 1/4 temperature gauge up the car hesitates and bogs badly. Then once it kinda warms up runs perfect. Also lately since the cold start misfire when I go to prime my fuel system cold ie over night the fuel pump barely primes like for only not even a second. But if its a warm start the fuel pump primes normally. Not sure if this is related but a couple of days ago I hit a rock in the road. Actually a boulder lol! It dented my greedy catback on the driver side and crushed the pipe in about 40% would this cause misfires under boost? I have ran a boost leak test and the car holds boost for a while so I don't think its that. Spark plugs are the ngk pfr 6b11b blah blahs gapped at .030 mod list. Currently put down 433rwhp at 18 psi. Do not currently have a tune. Running dual made selin translator. Anyone got any ideas?

Also yesterday my power steering randomly stopped working of I turned the key off and on the steering would work again then get hard to turn after a few mins. I have perfect tension and right amount of fluid. Not sure what problem is. I was thinking pressure solenoid that controls the steering tension as speed increases. Ideas? I'm really strung out.

     
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