skywagon
Member
I don't think you mentioned changing out the ignition/spark cable to #1.
Age, exhaust heat, and moisture are hard on the spark cables.
DL
Cylinder 1 Misfire. NOT plug,coil,or injector. Help
- Thread starter BrinkExpo
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
I don't think you mentioned changing out the ignition/spark cable to #1.
Age, exhaust heat, and moisture are hard on the spark cables.
DL
aesani
Member
Same thing happened to mine at 175K. It ended up being the intake manifold gasket leaking coolant into #1 cylinder. Getting in there was beyond my capability, or desire to even try, so $2,800.00 later it was cured.
blue oval guy
Well-Known Member
Those damn composite manifolds have caused more issues for Ford, from expeditions, escapes, F-series, all across the board. You would think they would have switched over to a more reliable long term material.
OP
OP
BrinkExpo
Well-Known Member
Thanks for the feedback, I ordered an injector and will let you know.
Did your coolant keep running low? I don’t think that’s the issue because mine doesn’t seem to be eating coolant.
Did your coolant keep running low? I don’t think that’s the issue because mine doesn’t seem to be eating coolant.
OP
OP
BrinkExpo
Well-Known Member
Are you talking about the harness that runs to the coil?
aesani
Member
Coolant ran low, but only about a quart a month. Not really noticeable, but it doesn't take but a drop or two to cause an intermittent miss. What caused me to look in that direction was that it didn't miss until the truck warmed up.
Not necessarily your issue, just a suggestion for an alternate place to look for your problem.
Not necessarily your issue, just a suggestion for an alternate place to look for your problem.
1955moose
Full Access Members
- Joined
- Nov 23, 2014
- Posts
- 5,981
- Reaction score
- 1,338
I think he was referring to the harness for the injectors. Check power/ground on the #1 injector, and also the adjacent injector plugs.that theirs no corrosion on plug or injector. Corrosion will cause that 3,000 rpm jump in a New York minute!
Sent from my N9131 using Tapatalk
Sent from my N9131 using Tapatalk
OP
OP
BrinkExpo
Well-Known Member
I replaced the injector and it is still acting the same?
Is the next step checking valve springs? Or replacing harness?
I hate spending money chasing down mystery misfires.
Would it be worthwhile to run some fuel additives(sea foam, lucas, etc) to try to clean things out? If so what have you guys used that actually works?
deweysmith
Full Access Members
Definitely a no on replacing harnesses. It works or it doesn’t, a flaky wire going to an injector is EXCEEDINGLY rare. There are also ways to test it aside from replacing it.
1955moose
Full Access Members
- Joined
- Nov 23, 2014
- Posts
- 5,981
- Reaction score
- 1,338
Did you check harness for #1 fuel injector? You need to be sure theirs power going to that injector. Putting sea foam, and all the other miracle fixes, is not going to get #1 bank right again. Before you dive into the valve train, make sure all with the fuel side, as well as the ignition side is sound. You said the dealer swapped out coil, and spark plug, and problem wasn't corrected. Depending on your patience and skill level, you can proceed with the members help, or you may choose to have a shop complete. We've all done it. Sometimes our time, and sanity outweigh frustration!
Sent from my N9131 using Tapatalk
Sent from my N9131 using Tapatalk
Similar threads
