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My Truck is driving me and my mechanic crazy trying to resolve repeated missfies in #4 cylanders. I am wondering if this is a symtom of f150 spark plug blowout problem.

Submitted: 984 days and 3 hours ago.

Category: Ford

Value: $9

Status: AWAITING CUSTOMER ACTION

Optional Information

Posted by Chris (aka- Moose) 984 days and 3 hours ago.

Info Request

Hi XXXXXXX. Thank you for asking your question on Just Answer. The other experts and I are working on your answer. By the way, it would help us to know:

-What year is your Ford?
-What model is your Ford?
-How many miles are on your Ford?
-What type of engine is in your Ford?
-What have you already tried? Has your vehicle had a aprak pug bow out on #4

Thank you again for trusting us with your problem. Please reply as soon as possible so that we can finish answering your question.

984 days and 3 hours ago.

Reply

HI Chris. My truck is is a 1998 f150 4x4. I have not had a spark plug blow out. But I continue to Have misfire problems with 2-4&5. Have changed plugs wires and coil packs. Thanks XXXXXXX Oh 4.6literV8 with 85000 miles

Posted by Chris (aka- Moose) 984 days and 2 hours ago.

Info Request

What brand spark plugs, do you have a check engine light that has or does come on.
Is it a dead miss or just runs rough and misses somewhat

984 days and 2 hours ago.

Reply

check engine light is on. Last week it was #4 misfire so we changed wires thinking problem was result of previous intake leaking antifreeze. Was fine for a day. now runing rough and missing with #5 miss fire code. Not sure about Type of plugs. But asked mechanic to use what Ford used from Factory.

Accepted Answer

If the intake was leaking coolant onto the plugs then they all would of needed to be replaced with motorcraft pugs. I suggest you get the codes pulled for the CEL. You also need to check the EGR ports on the intake. Also check for vacuum leaks around the intake and the vacuum and PCV hoses. You can spray the plug wires and the plugs and the coil while the vehicle is running. Use a spray bottle with water if the engine starts to run rough or rougher then the spark is getting out of the wires. It also would not be a bad idea to run some fuel injector cleaner through the tank.

Accepts:
Expert:	Chris (aka- Moose)
Pos. Feedback:	99.7 %
Answered:	3/15/2007

Ford Technician

Ford trained Tech. Trans, X-fer Case, Steering & Suspension & Brakes, Engine, Electrical

984 days and 1 hours ago.

Reply

not sure about your reply in regard to the plugs & wires because these have all been replaced last week. But I sure appreciate your suggestion about cleaning the egr ports and possible vacuum problems. Thank's from XXXXXXX in Plain City Ohio....

Posted by Chris (aka- Moose) 984 days and 1 hours ago.

Answer

I was just clarifing all were replaced with motorcraft. You need squeeze air fuel and fire to get combustion
squeeze= compression test
fire=plugs wires coil
air=not to little or to much regulated from MAF output signal
fuel not to little not to much reguleted with injectors

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Question

My Truck is driving me and my mechanic crazy trying to resolve repeated missfies in #4 cylanders. I am wondering if this is a symtom of f150 spark plug blowout problem.

Optional Information

Info Request

Reply

HI Chris. My truck is is a 1998 f150 4x4. I have not had a spark plug blow out. But I continue to Have misfire problems with 2-4&5. Have changed plugs wires and coil packs. Thanks XXXXXXX Oh 4.6literV8 with 85000 miles

Info Request

What brand spark plugs, do you have a check engine light that has or does come on.Is it a dead miss or just runs rough and misses somewhat

Reply

check engine light is on. Last week it was #4 misfire so we changed wires thinking problem was result of previous intake leaking antifreeze. Was fine for a day. now runing rough and missing with #5 miss fire code. Not sure about Type of plugs. But asked mechanic to use what Ford used from Factory.

Accepted Answer

Reply

not sure about your reply in regard to the plugs & wires because these have all been replaced last week. But I sure appreciate your suggestion about cleaning the egr ports and possible vacuum problems. Thank's from XXXXXXX in Plain City Ohio....

Answer

I was just clarifing all were replaced with motorcraft. You need squeeze air fuel and fire to get combustionsqueeze= compression testfire=plugs wires coilair=not to little or to much regulated from MAF output signalfuel not to little not to much reguleted with injectors

Related Ford Questions

What brand spark plugs, do you have a check engine light that has or does come on.
Is it a dead miss or just runs rough and misses somewhat

I was just clarifing all were replaced with motorcraft. You need squeeze air fuel and fire to get combustion
squeeze= compression test
fire=plugs wires coil
air=not to little or to much regulated from MAF output signal
fuel not to little not to much reguleted with injectors