Replacing fuel injector
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Replacing fuel injector
Hello,
I have noticed kinda misfire and a hesitation in acceleration, picked up a code of cylinder 3 misfire and sometimes random misfire code. So most probably it indicates either injector or COP, is it right? My question is it easy replacing injectors? If yes, is there any good write up for that!
knowing I have a 5.4L 2000 model. Thank you
Tamer
Amman-Jordan
I have noticed kinda misfire and a hesitation in acceleration, picked up a code of cylinder 3 misfire and sometimes random misfire code. So most probably it indicates either injector or COP, is it right? My question is it easy replacing injectors? If yes, is there any good write up for that!
knowing I have a 5.4L 2000 model. Thank you
Tamer
Amman-Jordan
Fleet Mechanic
Joined: Feb 2011
Posts: 1,812
Likes: 88
From: Thousand Oaks, CA
Least likely is the injector.
Most likely is the COP boot/spring.
Look at the boot for general condition, rust on the spring or moisture down in there.
Swap the boot/spring with #2 and see if problem moves.
Also, look at the coil casing for cracks.
How many miles on the plugs?
Most likely is the COP boot/spring.
Look at the boot for general condition, rust on the spring or moisture down in there.
Swap the boot/spring with #2 and see if problem moves.
Also, look at the coil casing for cracks.
How many miles on the plugs?
Moderator
Joined: Jul 2010
Posts: 12,064
Likes: 1,574
From: Media PA
Tamer, when the plugs were changed 25,000 miles ago were the COP boots and springs also changed? They should be changed along with the plugs as they do wear out and get very small cracks which will allow the high voltage to leak out causing a misfire.
If the boots were not changed along with the plugs, now would be a good time to change out all eight of them.
If the boots were not changed along with the plugs, now would be a good time to change out all eight of them.
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