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I have dual fuel insignia. When it runs on petrol I get error code P0301 "sylinder 1 missfired, when it runs on LPG I get error code P0172 "system is too reach bank 1" it runs rough,also it goes to limp mode on high speed. I have already replaced the coil pack, swapped the plugs around, sprayed the MAF with carb cleaner (it looked clean anyway) and no difference. Any suggestions and help are much appreciated.

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  • 334 Answers

COULD BE INTAKWE LEAK CHECK FOR THAT OR BAD INJECTOR MOVE THEM AROUND, BUT LP AND GAS USE DIFFRENT DELIVERY METHODS , SO MAY BE VACUUM LEAK

Posted on Oct 22, 2013

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SOURCE: 99 4runner misfire

make cranshaft gear has not spun under timing cover ive seen it happen before

Posted on Dec 31, 2008

alicantecoli
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SOURCE: coil pack

153624 is the firing order

Posted on Jun 21, 2009

  • 543 Answers

SOURCE: Code 171 Bank 1 too lean

well actually you cant clean the mass air flow,you usually ruin it when you clean it,it could be a bad maf or just crapy gas,not crappy enuff that the car doesnt run,but enuff it doesnt like the air/fuel mixture and is setting the light

Posted on Oct 10, 2009

jagjeffery
  • 318 Answers

SOURCE: im throwing code p0171 bank

Your problem is the mass air flow sensor is bad theat code is miss leading a p0171 and p0174 are both miss leading replace the mass air flow sensor and clear the codes.

Posted on May 10, 2011

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