Monday, May 14, 2012

Ford F-Series Rough Idle/Vibration?

Basically in this cases it feels like engine not getting gas and feels very rough idle.

1996 Ford F-150 engine idle is rough.

The problem your describing does sound like a fuel pressure concern and when a fuel pump begins to fail it will overheat and this cause the fuel to foam and the engine will run poorly, once the pump cools down it usually run normal again till the next time, I would start with installing a fuel pressure gauge to the fuel rail service port again and monitor fuel pressure while the problem is occurring, as per specs the ford F-150  1996 fuel pressure should be 45 to 60 PSI, anything less means the pump is failing and needs to be replaced.

This details will help.

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