Miss fire cyl#6 I have chaged the injector plugs wires coil carbon treatment prof done. truck ran fine for days over 100 miles. Today on ruff road cyl #6 miss fire is back. Not using coolant. I clead code with reader and back before im out of town. Seems to stay away longer if i unhook batty over night. HELP PLEASE
1998 ford f150
- Thread starter Kouga
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Some thoughts:
What does the plug in #6 look like? Is it oil fouled?
Or is there an indication of a coolant leak from a bad head gasket?
You also might want to change the fuel filter and flush the fuel lines in case you have some fine sediment that is getting through and clogging this injector. I had that happen on a '97 Chevy pickup.
What does the plug in #6 look like? Is it oil fouled?
Or is there an indication of a coolant leak from a bad head gasket?
You also might want to change the fuel filter and flush the fuel lines in case you have some fine sediment that is getting through and clogging this injector. I had that happen on a '97 Chevy pickup.
Check for vacuum leaks. Sometimes vacuum systems don't use vacuum equally from all cylinders. Vacuum hoses are Ford engines are usually quite weak. Also replace the PCV valve if it has over 20,000 miles on it.
You should do a compression check and see if 6 (And other) cylinders have low compression.
Many Ford V6 engines have head gasket problems.
You should do a compression check and see if 6 (And other) cylinders have low compression.
Many Ford V6 engines have head gasket problems.
OVERKILL
$100 Site Donor 2021
What engine?
Quote:
Today on ruff road cyl #6 miss fire is back
Maybe a bad connection at the coil or the injector, try moving the connectors and wiring with the engine running.
If that doesn't help put a noid light on the injector connector and see if its getting juice when the engine is running, if it is look closer at the coil connector and associated wiring.
Today on ruff road cyl #6 miss fire is back
Maybe a bad connection at the coil or the injector, try moving the connectors and wiring with the engine running.
If that doesn't help put a noid light on the injector connector and see if its getting juice when the engine is running, if it is look closer at the coil connector and associated wiring.
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