Question about Cars & Trucks
I have 93 nissan quest it was running good but time for tune up i changed plugs. cap and rotor after that it ran great then couple months went by and it started running rough when i take off it was sluggish but as i picked up speed it ran better but seemed to be runnning like it was missing . I then changed plug wires still ran bad, so i replaced plugs still ran bad then i changed cap and rotor everything was replaced still runs bad what could it be ?
The problem is not in the plugs , wires , cap , rotor but in dirty injectors or injector controls and wires
use a quality injector cleaner for a few tanks of fuel
ECM controlled cars do not a tune up as the computer does that 60 times a minute so all you need to do is to run the fault codes and fix the faulty sensors
fault codes are being recorded all the time and only the serious engine or transmission faults put the engine light on
Posted on Jun 21, 2017
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Posted on Jan 02, 2017
seems that you might have some water in the gas tank. get some gas dryer and pour in the tank. 2 half pint bottles should do to a half tank of gas. good luck.
Posted on Nov 08, 2009
You may have some contaminated fuel,use a additive called heet,for moister,and lucas fuel treatment,these are premium additives,do not just use any brand,these I know will fix the problem if it is in the fuel.
Posted on Jan 25, 2010
Make sure the HT leads are secure. They might be popping off, causing it to not fire on one cylinder. I always change the plugs and leads at the same time to keep them the same age. HT leads break down rapidly and need regular replacement.
Posted on Jun 23, 2010
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