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Old 07-19-2011, 08:28 AM
grogle grogle is offline
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Join Date: Jul 2011
Posts: 4
Default Mis-firing during accelearation/under load

Hello everyone,

I am driving my second Ranger since 1985. The current Ranger is a 96, 2wd, 4 cyl. with 339,000 miles. (Original engine, 3rd clutch. )

It recently started missing during acceleration and under load. The missing only occurs during the middle of the rpm range for each gear. (manual 5 speed)

I have replaced upstream O2 sensor, MAF sensor, EGR valve, and catalytic converter. Fuel filter was replaced 6 months ago but I am replacing it again this weekend.

Question:

There is a gas leak from the top of the fuel tank when I fill up. (Crack in fuel filler tube?) The engine is giving a code P1443 "EVAP Canister purge valve mechanical fault or VMV fault condition". Could a leak in the fuel system like this cause the misfiring during acceleration?

Thanks,

Greg
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