91 300zx Trouble

The Nissan 300ZX (Z32) general community discussion forum
T]MrSuave[T
Posts: 1
Joined: Sun Sep 28, 2014 7:52 pm
Car: 91 Nissan 300zx

Post

I need help trying to fix my car please.
Problem One: Missfire: My car seems to subtly miss at an idle but when revved up it goes away, also i noticed that on the passenger side muffler, it seems to feel more hot (exhaust) opposed to the driver side. Previously it misfired more often but with cleaning the MAF and the injector connection as well as new spark plugs all around it seemed to reduce the misfire a little. Side note, i did an voltage test on all the coil packs and injectors and they seem to be at spec, hence why im confused.
Problem 2: Boost cut like effect at 6rpm: My car also seems to act like it hit boost cut when i reach 6rpm, this is more of a pressing issue.
Answers for both or one would be greatly appreciated, and also include any trouble shooting ideas.
Thank you sooo much! :)


ThisIsSparTTa
Posts: 738
Joined: Wed Sep 26, 2012 6:02 pm
Car: 91 300ZX TT 2+0

Post

Do you have new style injectors? Have you ohmed your injectors? http://z32.wikispaces.com/Fuel+Injector

Have you pulled codes?

What's the behavior when you think you have "boost cut"? Does it make a popping or pulsing noise? That would you missing on cylinders, likely related to not feeding the right amount of fuel.

You likely need to stop pushing it until you get this resolved or you're going to toast your engine.


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