Spark plug problems
06-07-2016, 03:43 PM
#1
Instructor
Thread Starter
Spark plug problems
an issue I had about 3 months ago has arised again looking for some feedback The first two spark plugs on the left bank keep fouling out C5 starts running rough and has a bad idle loss of power and gives me a
p0300 engine misfire it has always been the first two plugs and I am using irradium plugs for this c5...
p0300 engine misfire it has always been the first two plugs and I am using irradium plugs for this c5...
06-07-2016, 03:58 PM
#2
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Member Since: Dec 1999
Location: Anthony TX
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CI 6,7,8,9,11 Vet
St. Jude Donor '08
"Left bank" I suspect that you are discussing drivers plugs 1 and 3
What would cause JUST TWO plugs to foul????
How are they fouled?? Please post pictures of the two fouled plugs compared to the others.
1. Low Compression
2. Damaged or Leakey fuel injectors
3. Bad Head Gasket between the two cylinders
4. Leaking valve guide seals
5. Bad wires (do you ever get a miss before they are fouled>
6. Bad Coils or wires that support the operation to the coils
6a. If it were ME,, I would get a meter and do some TESTING of the basic coil circuit. Check for power, ground
Here are the schematics for that coil/s:
Verify that you have FULL BATTERY voltage and proper zero ohm grounds
What would cause JUST TWO plugs to foul????
How are they fouled?? Please post pictures of the two fouled plugs compared to the others.
1. Low Compression
2. Damaged or Leakey fuel injectors
3. Bad Head Gasket between the two cylinders
4. Leaking valve guide seals
5. Bad wires (do you ever get a miss before they are fouled>
6. Bad Coils or wires that support the operation to the coils
6a. If it were ME,, I would get a meter and do some TESTING of the basic coil circuit. Check for power, ground
Here are the schematics for that coil/s:
Verify that you have FULL BATTERY voltage and proper zero ohm grounds
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joe Villarreal (06-09-2016)