Question about Pontiac Sunfire
Internal miss fire on my 2.4 litre sun fire have chqd sust with scanner sais random multiple missfire new plugs wires coil etc could it be low fuel pressure or regulator or fuel fltr //////????????? need help before i tear out more hair im only 2nd yr tec
You could have partially clogged fuel injectors.or you getting a lean misfire check your fuel pressure .it should be.41 -47 psi.if low replace fuel filter.if dont help.you got fuel pump problems.check all vacuum lines.+ the vacuum line that goes to fuel pressure regulator.
Posted on Apr 22, 2009
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Posted on Jan 02, 2017
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