Question about plug wires...
Thread Starter
|
Freshman User
Joined: Dec 2003
Posts: 43
Likes: 0
From: Frisco, TX
Question about plug wires...
How much can they affect milage? Also, can they be the cause of engine knock? I know rough idle can be caused by a bad wire(s).
I consistently get 13mpg no matter how hard or easy I drive. I gave a coworker the symptoms and he said that he tought it may need a valve job. Seems a little young to need one already. I know you can't really diagnose over the internet. just looking for some pointers.
Here's what I can tell you.
Milage sucks
engine knock (REALLY bad in cold temps) but sounds more like it's valve noise.
no low end power (if I'm already it highway speeds, I can give it gas and it reponds pretty good).
I'm going to buy the wires at lunch today and replace. Just wanting some more pointers. I don't know much about these "newer" engines but could this be a timing issue? I know with my old '79 Monte Carlo I could move the distributor until the engine ran good, top and bottom end. This thing, not so much. Any help is appreciated. Thanks!
I consistently get 13mpg no matter how hard or easy I drive. I gave a coworker the symptoms and he said that he tought it may need a valve job. Seems a little young to need one already. I know you can't really diagnose over the internet. just looking for some pointers.
Here's what I can tell you.
Milage sucks
engine knock (REALLY bad in cold temps) but sounds more like it's valve noise.
no low end power (if I'm already it highway speeds, I can give it gas and it reponds pretty good).
I'm going to buy the wires at lunch today and replace. Just wanting some more pointers. I don't know much about these "newer" engines but could this be a timing issue? I know with my old '79 Monte Carlo I could move the distributor until the engine ran good, top and bottom end. This thing, not so much. Any help is appreciated. Thanks!
Postmaster
Joined: Aug 2001
Posts: 4,532
Likes: 5
From: Trussville, Alabama
Agreed. If plug wires have never been changed, they are due and can cause driveability issues.
I'd go ahead and change plugs too.
Suggestion: stay with Motorcraft wires (and plugs).
No CEL codes I assume or you'd likely have mentioned them.
I'd go ahead and change plugs too.
Suggestion: stay with Motorcraft wires (and plugs).
No CEL codes I assume or you'd likely have mentioned them.
Thread Starter
|
Freshman User
Joined: Dec 2003
Posts: 43
Likes: 0
From: Frisco, TX
Originally Posted by BrianA
No CEL codes I assume or you'd likely have mentioned them.
Could wires affect mpg without throwing a code? I would have thought I would have gotten a misfire reading this morning.
Thread Starter
|
Freshman User
Joined: Dec 2003
Posts: 43
Likes: 0
From: Frisco, TX
Ended up having to change them after I got home. Took it for a drive afterwards and it seems to be running good. Did not hear the knocking/tapping I heard before. Power seemed to be back to where I would expect it to be. Looks like it was just old wires.
Thread Starter
|
Freshman User
Joined: Dec 2003
Posts: 43
Likes: 0
From: Frisco, TX
Well, engine is still running a little rough at idle and the knock is still there. don't know why I didn't hear it yesterday. Anyone know what else I could look for? I just changed the oil (motorcraft 5w30). Any help/ideas are really appreciated.
Oh yeah, who at Ford dreamed up these dang air muffler things on the air intake canisters?
Oh yeah, who at Ford dreamed up these dang air muffler things on the air intake canisters?
