Question about 1992 Nissan 240SX Fastback

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Think air fuel ratio is off over loading

Car will run it sputters sounds like a miss i have changed plugs,wires,rotor button and MAF sensor i even resorted to changing it all and and un hooking the battery. i recently had an exhaust installed. all oxygen sensores were installed back in. i checked all injectos to. i wanna say the air fuel ratio is off. need help

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  • 192 Answers

Here are a couple of things to try.
1. You may have a vacuum leak or a bad EGR valve. 2. Try adjusting the timing. 3. Have you checked the air and fuel filters? 4.You may want to try adding some fuel injector cleaner to your gas if you haven't done so already.

Posted on Jun 18, 2009

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Posted on Jan 02, 2017

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I have a 2002 Blazer and it is hard to start we replaced fuel pump,fuel filter,crank sensor unit , oil line ,oil pressure Gage, did Tune -up Rotor button ,rotor cap wires spark plugs


by not running the fault codes first , you have missed the real faulty sensor that is causing the problem
nothing of what you replaced is linked to hard starting, like , ambient temp sensor ( used to report the air temp for the setting of the rich mixture need for starting)
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