300ZX (Z31) Performance / Technical Discussions related to Turbo charging, Supercharging, Engine, ECU, exhaust, and etc. performance enhancements and Techical related.

Fuel Pump

Old May 22, 2006 | 08:36 PM
  #1  
drummer69's Avatar
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Fuel Pump

I have a problem with my 85 NA. I started it up the engine shakes, runs choppy, when I go to excelrate it gets worse, then she stalls, could that be a fuel pump problem ? I drove it all day with no problems.
Old May 22, 2006 | 10:19 PM
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check your TPS and maf first if they check out ok for the most part. Buy a good ole can of fuel injection cleaner and maybe some octane booster. Try to keep track where you buy gas from and see if the problem comes back.
Old May 23, 2006 | 04:31 AM
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I agree with Navy in a way, but first when was the last time you changed the fuel filter? also if you recently washed the engine maybe you have water by the spark plugs and the wires could be bad. these cars being 20 years old, I recommend to drop the fuel tank and clean it as they build up sluge over the years.
Old May 23, 2006 | 02:36 PM
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Damn,my car is almost old enough to drink...
Old May 23, 2006 | 03:16 PM
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Ok replaced the fuel filter, added octane booster, she still won't idle. The car is getting fuel, when I pulled the filter off fuel came out. I have this strange feeling that is might be starving for AIR !!!! Any suggestions ??? LOL I guess I am taking the new Trek Bicycle to work, not to say thats bad, I live in SUNNY South Florida and look at the good thing, I ain't burnin gas .
Old May 23, 2006 | 03:19 PM
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Originally Posted by drummer69
Ok replaced the fuel filter, added octane booster, she still won't idle. The car is getting fuel, when I pulled the filter off fuel came out. I have this strange feeling that is might be starving for AIR !!!! Any suggestions ??? LOL I guess I am taking the new Trek Bicycle to work, not to say thats bad, I live in SUNNY South Florida and look at the good thing, I ain't burnin gas .
Has it always done this? If not, was there something you did that might have changed it? Have you checked the timing? Have you checked ALL sensors & wiring connections to make sure they are seated right & free of corrosion?
Old May 23, 2006 | 05:18 PM
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AAC maybe ?
Old May 24, 2006 | 05:16 AM
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Iddle issue

Originally Posted by drummer69
Ok replaced the fuel filter, added octane booster, she still won't idle. The car is getting fuel, when I pulled the filter off fuel came out. I have this strange feeling that is might be starving for AIR !!!! Any suggestions ??? LOL I guess I am taking the new Trek Bicycle to work, not to say thats bad, I live in SUNNY South Florida and look at the good thing, I ain't burnin gas .
Do a self diagnostic test. send me your e-mail and will scan the page for the test. after your read the code send me an e-mail back and I will send you how to shot that trouble from the manual.
Old May 24, 2006 | 10:12 AM
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hey thanks for all yer help guys, lovin this site. Its like Z heaven here.
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