99 mercury cougar wont start?

cj1991
45

Asked by cj1991 Nov 18, 2012 at 10:57 PM

Question type: Maintenance & Repair

Replaced, camshaft positioning
sensor, spark plugs and wires, coil
pack, starter, alternator, fuel pump,
fuel filter, and the pressure regulator.         
After sitting for a while it will crank,
but just wont start. But sometimes if I
hold the gas all the way, it will start,
and idle funny and have a huge cloud
of dense white smoke. Smoking goes
away, idle returns to normal, and it
runs fine.........      still the car sits for a
while.

2 Answers

Tom Demyan
82,725

Sounds fuel related. Since you replaced the pump and other items, check your injectors, they might be clogged. Since you have white smoke, you might have a headgasket issue or some other gasket has let go forcing coolant into the combustion chamber. How is your coolant level? Is it low?

cj1991
45

Slow coolant leak

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