missfire cyl 1 - replaced coil packs, plugs and leads - still misfiring....
#1
missfire cyl 1 - replaced coil packs, plugs and leads - still misfiring....
Gents,
This one has me up the stream....
In a previous thread I mentioned I had the head gaskets replaced 10 months ago and things just weren't right - poor gas mileage and over the course of a few months high oil consumption.
Eventually I had misfires in #1 & #8. Techs at my LR dealership pulled the heads and the valve seals had hardened with oil leaking into #1 .
Replaced seals, installed new plugs, coil packs and my 8mm wires - back in business right?
Engine was still running a little rough and sending a misfir code in cyl#1 - replaced the #1 ignition lead and she idled/drove perfect - dead flat for about 3 miles then the engine light came back on with guess what???
Misfire #1 cylinder...... FML...
To recap:
Headgaskets changed (again), new lifters, spark plugs, coil packs and new(ish 8mm leads) and 1 brand new lead on the offending cylinder.
All I can do now is swap #1 plug with another cylinder and see if the problem moves other than that I am out of ideas - and so are my techs.....
Any ideas would be welcome.
This one has me up the stream....
In a previous thread I mentioned I had the head gaskets replaced 10 months ago and things just weren't right - poor gas mileage and over the course of a few months high oil consumption.
Eventually I had misfires in #1 & #8. Techs at my LR dealership pulled the heads and the valve seals had hardened with oil leaking into #1 .
Replaced seals, installed new plugs, coil packs and my 8mm wires - back in business right?
Engine was still running a little rough and sending a misfir code in cyl#1 - replaced the #1 ignition lead and she idled/drove perfect - dead flat for about 3 miles then the engine light came back on with guess what???
Misfire #1 cylinder...... FML...
To recap:
Headgaskets changed (again), new lifters, spark plugs, coil packs and new(ish 8mm leads) and 1 brand new lead on the offending cylinder.
All I can do now is swap #1 plug with another cylinder and see if the problem moves other than that I am out of ideas - and so are my techs.....
Any ideas would be welcome.
#2
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shanechevelle (08-27-2019)
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If everything is good mechanically, and the injectors are good, it sounds like a bad ground.
Check and clean all the engine bay and undercarrige connections.
Something could be loose and/or corroded.
Never fails, something stupid...but they're usually free fixes when you finally find them.
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LADEROUTE (06-27-2018)
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Come to think of it the misfire occurred 10 months after the head gasket was replaced....
I swapped the spark plug out this morning and it ran great for about a half hour and then upon restarting and driving it misfired again causing the Flashing check engine light came on - code reader says:
- Emission relevant misfire multiple cylinders
- Emission Relevant Misfire cyl 1
It idles a little rough but when I replace the sprak plug it smooths out beautifuly until the next misfire..... AARGH!!!
I swapped the spark plug out this morning and it ran great for about a half hour and then upon restarting and driving it misfired again causing the Flashing check engine light came on - code reader says:
- Emission relevant misfire multiple cylinders
- Emission Relevant Misfire cyl 1
It idles a little rough but when I replace the sprak plug it smooths out beautifuly until the next misfire..... AARGH!!!