air popping from top of engine, reduced power

Asked by Feb 27, 2017 at 07:18 PM about the 2003 Ford F-150 XLT Extended Cab SB

Question type: Maintenance & Repair

6 Answers


What does that mean? Did your engine eject a spark plug?

possibly don't know for sure too dark to see

loud popping louder as accelerating


There are some vacuum hoses that connect to underside of upper intake (1 near front center & 1 near back left) also has PCV on rear left valve cover that line runs to underside of intake in front behind thermostat housing. Brake booster vacuum hose.


Check EGR vacuum solenoid. Popping might be coming from exhaust not enough back pressure when you accelerate.


I think you blew out a plug which is a known issue with the Triton engines.

Your Answer


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