jkplusplus
Registered User
I've got an 05 f250 with a 5.4 3v. Was pulling a trailer and had the cel start flashing / truck started running rough. Had happened a couple of times in the past when pulling, usually flashed for about a minute then went back to normal. This time that didn't happen. Started running real rough, losing acceleration. Pulled to the shoulder and felt the wheels lock temporarily, then rolled to a stop and just clunked when trying to start. Removed the spark plugs after towing it home. The electrode tip was missing on one plug, all the rest were unremarkable. The tip is small enough that I would expect it to get expelled through the exhaust, but it might be possible it's stuck.
I figured it was junk, so I tried starting it occasionally. Every now and then it'll spin real slow for a 1/4 turn and then clunk. Can't get it to spin manually in either direction. I saw a post on here where another fella had a similar issue where it wouldn't spin either way, and in that case it was the timing guide stuck in the sprocket. Getting ready to pull the valve and front covers off.
So a couple of questions:
1.) Do you think it's a broken timing guide, a wedged spark electrode, or other.
2.) Given the severity of how it stalled, even if it's the timing guide wedged in there it could also have more damage elsewhere. Would you spend the money on the OEM timing kit + HV oil pump, or would you go cheap so you don't spend $1000+ on an almost 20yr old truck only to have it still be junk when you put it back together.
Any guidance and opinions are deeply appreciated.
I figured it was junk, so I tried starting it occasionally. Every now and then it'll spin real slow for a 1/4 turn and then clunk. Can't get it to spin manually in either direction. I saw a post on here where another fella had a similar issue where it wouldn't spin either way, and in that case it was the timing guide stuck in the sprocket. Getting ready to pull the valve and front covers off.
So a couple of questions:
1.) Do you think it's a broken timing guide, a wedged spark electrode, or other.
2.) Given the severity of how it stalled, even if it's the timing guide wedged in there it could also have more damage elsewhere. Would you spend the money on the OEM timing kit + HV oil pump, or would you go cheap so you don't spend $1000+ on an almost 20yr old truck only to have it still be junk when you put it back together.
Any guidance and opinions are deeply appreciated.