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po306 misfire
I have a check engine light with a po306 [...] ignition system,[...] fuel system and even swapped #5 and #6 injector,no change. It only misfires on light [...] I plug the EGR valve the skip goes away and just get an EGR [...] valve spring was weak so I replace... Login to read more. 
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| Engine | 4.2 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
1997 Ford E-150 Econoline 4.2L
| Engine | 4.2 L |
| Trans | 4-speed Automatic (Electronic) |
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