Bad engine??
Thread Starter
|
New User
Joined: Nov 2015
Posts: 2
Likes: 0
Bad engine??
5.8l 1991 e350 box truck
Sounds like a very bad piston slap when I give it gas as its cruising down a hill on the freeway. Or in neutral as I let off but ease back on as its winding down.
Horrible! I can't drive it. I have to gun it so I don't hear the sound. Not much power either.
I notice ford has re-manufacture 5.8l for 2500$ delivered to local ford dealer. Hear it's a pain but guy could do it in a week?
Sounds like a very bad piston slap when I give it gas as its cruising down a hill on the freeway. Or in neutral as I let off but ease back on as its winding down.
Horrible! I can't drive it. I have to gun it so I don't hear the sound. Not much power either.
I notice ford has re-manufacture 5.8l for 2500$ delivered to local ford dealer. Hear it's a pain but guy could do it in a week?
Lead Driver
Joined: Aug 2003
Posts: 6,305
Likes: 18
From: Boulder Creek, Ca
Unless experience other issues with the engine, and/or, considerable number of miles on the engine, then suggest try and isolate the problem to a particular cylinder(s). Run the engine @ idle, listen at each cylinder using a hose. Suggest then remove valve covers and look for anything obvious, particular if narrow it down to particular cylinder(s). Lastly, pull the plugs and check for compression.
Had similar issue, almost sold the truck to the tow truck driver on the way home. Started the engine, used the hose, isolated the cylinder and found a lifter collapsed, purchased cam and lifter set for lot less that replacing the engine. Anyhow, food for thought?
Had similar issue, almost sold the truck to the tow truck driver on the way home. Started the engine, used the hose, isolated the cylinder and found a lifter collapsed, purchased cam and lifter set for lot less that replacing the engine. Anyhow, food for thought?
Thread Starter
|
New User
Joined: Nov 2015
Posts: 2
Likes: 0
thank you thank you!
Isolated it to passenger rear cylinder area. I did use Lucas oil treatment for a while and think it made it worse. Hear bad for lifters. Will consider doing what you did.
Thanks for the quick top notch reply.
Thanks for the quick top notch reply.
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
If the noise is in the rear cylinders, then it's a good bet it's got one or more spun rod bearings. The #4 and 8 rods are the last in line to receive oil from the pump. And if it wasn't given regular oil and filter changes, that's a death sentence for those two rod bearings. The van engines have to come out from the front, after removing the radiator, grill and support beam. Not an easy job but might be done in a week's time, depending on the people and their skill level.
Thread
Thread Starter
Forum
Replies
Last Post
PagodaMomar
1961 - 1966 F-100 & Larger F-Series Trucks
5
Jan 21, 2024 04:16 PM
coop589
1987 - 1996 F150 & Larger F-Series Trucks
19
May 25, 2019 03:06 PM
64F-100
Y-Block V8 (239, 272, 292, 312, 317, 341, 368)
35
Apr 3, 2009 01:44 PM
83f150beast
Ford Inline Six, 200, 250, 4.9L / 300
15
Nov 1, 2006 02:08 PM
