car not starting unless plug is removed
80

Asked by dimebagbubba May 06, 2016 at 02:27 AM about the 2002 Ford Explorer XLT 4WD

Question type: Maintenance & Repair

2002 ford explorer 4.6 won't start unless a
spark plug is removed. Coolant busted out
up from behind engine. Started running
terrible now it won't run unless a spark plug
is removed. Why will it only run while a plug
is removed?

4 Answers
159,085

Bob answered 8 years ago

Blown head gasket, the cylinder is filling up with coolant causing a hydrolock. Coolant is liquid and non-compressable. I'll bet it is losing coolant also.

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80

dimebagbubba answered 8 years ago

And it will run when I remove the egr valve. As long as there's somewhere else for air to go, it'll run. No more than 2k rpm though.

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