2000 engine misfiring
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5th Wheeling
Joined: May 2015
Posts: 39
Likes: 2
2000 engine misfiring
Not sure if that is the problem. My F350 idles fine but every 10-15 seconds it mis fires. When asking it to go up hill it sputters and seems to loose power. It runs fine until asked to work hard.
Not really sure which direction to go in first.
Not really sure which direction to go in first.
Postmaster
Joined: Sep 2010
Posts: 3,472
Likes: 2
From: Southern Cal
COP's first, plugs next. See if it's prompting a P0300 code as a random misfire or a specific cylinder such as a P0303 for the third cylinder, etc.
Lots of write ups here on coil paks. Rubber boots crack, springs rust out, etc.
Lots of write ups here on coil paks. Rubber boots crack, springs rust out, etc.
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5th Wheeling
Joined: May 2015
Posts: 39
Likes: 2
I will check for a vacuum leak, seems like the culprit
If that is not the case I will go from there.
Thanks for the replies all!
If that is not the case I will go from there.
Thanks for the replies all!
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Postmaster
Joined: Sep 2010
Posts: 3,472
Likes: 2
From: Southern Cal
With a P0174 code, you most likely have a vacuum leak and most likely the pcv elbow over the passenger side valve cover area.
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Same issue with my v10
Not to hijack, more piggyback/consolidate the info.
My 99 6.8 stared doing the same thing this week. Skips/misses every once in a while at idle, but very pronounced under load. Smooths out as the rpm's go up, but still there. Im not getting any codes though. I thought vac leak too, but a few years ago the referenced hose had a hole in it and the symptoms were different. Im digging in this weekend with plugs and inspections of the coils - I'll post what i find. Maybe it'll help if you don't get yours fixed sooner.
Brian
My 99 6.8 stared doing the same thing this week. Skips/misses every once in a while at idle, but very pronounced under load. Smooths out as the rpm's go up, but still there. Im not getting any codes though. I thought vac leak too, but a few years ago the referenced hose had a hole in it and the symptoms were different. Im digging in this weekend with plugs and inspections of the coils - I'll post what i find. Maybe it'll help if you don't get yours fixed sooner.
Brian
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