redandblacksmith
Registered User
Hey, all. Been kicking around here reading threads for about a year, finally registered several months ago. I need some help. Working on a 1990 F250 with a 7.3l and a Jasper reman e4od.
Me engine, transmission, or both have been running fairly rough lately. At idle and when driving, there always seems to be a low rumble and, at timea, a faint, hollow, metallic sound.
Anyway, yesterday I opened the valve covers to see what I could see since I had new gaskets for them anyway. On the passenger side, in a puddle of oil just below a pair of rockers, I found a pretty large shard of what looks like cast iron. It has a broadly round contour and is about 1/8" thick overall. I'll post a picture below. I have no idea where it came from. It doesnt seem to be part of any of the rockers and I cant see any damage to other parts on the face of it. Any ideas? It was going to rain and I didnt have time to pull everything apart so I put the cover back on.
This morning, I replaced all 8 of my glow plugs. Seven of them came out and went back in smoothly, nothing abnormal at all. Cylinder 7, though, was different. Plug came out fine, but the tip had a little band of metal wrapped loosely around it. It doesn't look like part of the plug, but I dont know what it could be.
The engine is still running, and the glow plug replacement seemed to improve its condition today. I've driven it a couple hundred miles now since I found the shard under the valve cover and, short of the low vibration, its driving fine. Accelerates fairly responsively but definitely lugs uphill. It's always done that a bit though, and it isn't very smoky about it.
Any thoughts?
Me engine, transmission, or both have been running fairly rough lately. At idle and when driving, there always seems to be a low rumble and, at timea, a faint, hollow, metallic sound.
Anyway, yesterday I opened the valve covers to see what I could see since I had new gaskets for them anyway. On the passenger side, in a puddle of oil just below a pair of rockers, I found a pretty large shard of what looks like cast iron. It has a broadly round contour and is about 1/8" thick overall. I'll post a picture below. I have no idea where it came from. It doesnt seem to be part of any of the rockers and I cant see any damage to other parts on the face of it. Any ideas? It was going to rain and I didnt have time to pull everything apart so I put the cover back on.
This morning, I replaced all 8 of my glow plugs. Seven of them came out and went back in smoothly, nothing abnormal at all. Cylinder 7, though, was different. Plug came out fine, but the tip had a little band of metal wrapped loosely around it. It doesn't look like part of the plug, but I dont know what it could be.
The engine is still running, and the glow plug replacement seemed to improve its condition today. I've driven it a couple hundred miles now since I found the shard under the valve cover and, short of the low vibration, its driving fine. Accelerates fairly responsively but definitely lugs uphill. It's always done that a bit though, and it isn't very smoky about it.
Any thoughts?
