What's causing my misfire?
#1
What's causing my misfire?
1997 Dodge Ram 1500 with the 5.9l.
Codes for misfire (P0300) and misfire at cylinder 1 (P0301).
I have changed all the spark plugs and spark plug wires, the distributor cap and rotor, and the cylinder 1 fuel injector (as long as cylinder 1 is indeed the one furthest front on the driver side).
Still rough idle occassionally and same misfire codes popped back up.
What do I do next??
Codes for misfire (P0300) and misfire at cylinder 1 (P0301).
I have changed all the spark plugs and spark plug wires, the distributor cap and rotor, and the cylinder 1 fuel injector (as long as cylinder 1 is indeed the one furthest front on the driver side).
Still rough idle occassionally and same misfire codes popped back up.
What do I do next??
#2
The following users liked this post:
neanderthal (02-12-2024)
#3
The following users liked this post:
neanderthal (02-12-2024)
#4
1997 Dodge Ram 1500 with the 5.9l.
Codes for misfire (P0300) and misfire at cylinder 1 (P0301).
I have changed all the spark plugs and spark plug wires, the distributor cap and rotor, and the cylinder 1 fuel injector (as long as cylinder 1 is indeed the one furthest front on the driver side).
Still rough idle occassionally and same misfire codes popped back up.
What do I do next??
Codes for misfire (P0300) and misfire at cylinder 1 (P0301).
I have changed all the spark plugs and spark plug wires, the distributor cap and rotor, and the cylinder 1 fuel injector (as long as cylinder 1 is indeed the one furthest front on the driver side).
Still rough idle occassionally and same misfire codes popped back up.
What do I do next??
How manmiles on the engine? If it's over 120K, has the timing chain ever been replaced?
The following users liked this post:
neanderthal (02-12-2024)
#6
#7
The stock chain is a morse style. (stamped steel plates riveted together) and very prone to stretching.
The following users liked this post:
neanderthal (02-12-2024)
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#8
In addition to the chain stretching, the factory cam gear is plastic coated. They tend to crack at the teeth. It would be a good idea to replace the timing chain set with a good double roller timing chain and gear set. I'm sure there are several YouTube videos that show how to remove & replace a Dodge Ram 5.9 magnum timing chain & gear set, if you're inclined to do the job yourself.
Might also want to try some copper spark plugs to see if your misfire issue clears up, as platinum plugs (especially Bosch) don't tend to work well in these motors.
Might also want to try some copper spark plugs to see if your misfire issue clears up, as platinum plugs (especially Bosch) don't tend to work well in these motors.
The following users liked this post:
neanderthal (02-12-2024)
#9
In addition to the chain stretching, the factory cam gear is plastic coated. They tend to crack at the teeth. It would be a good idea to replace the timing chain set with a good double roller timing chain and gear set. I'm sure there are several YouTube videos that show how to remove & replace a Dodge Ram 5.9 magnum timing chain & gear set, if you're inclined to do the job yourself.
Might also want to try some copper spark plugs to see if your misfire issue clears up, as platinum plugs (especially Bosch) don't tend to work well in these motors.
Might also want to try some copper spark plugs to see if your misfire issue clears up, as platinum plugs (especially Bosch) don't tend to work well in these motors.
#10
The following users liked this post:
neanderthal (02-12-2024)