Having problems with your Ford F ?

Engine noise in 460 1983 E 350

\015 Clanking sound in 460 1983 engine after engine warms up and at slow idle (750 rpm). Noise is in front of engine by lower timing sprocket. Timing sprockets and chain have been replaced as was water-pump. It sounds like a loose chain slapping against side of oil-pan. Noise goes away at 1100 rpm. Fuel pumps are in the gas tanks. I suspect a piston rod sliding around or some sort of piston slap. Desperate for help as this is my motorhome with only 65,000 miles on it.\015 Posted / edited by AnonymousUser on : 19-02-2018

Answers :

Hi, I have a 1999 Ford Expedition Eddie Bauer......2 days ago i heard a loud clanging, today it is really loud and EMBARRASING....and frustrating.....just wanna give you guys input I heard from 3 close friends that are mechanics........the consensus was that they are ALL saying it is my flex plate.....and they think it is cracked.......they all told me if i do not get this replaced asap, i will NOT be able to start it up......right now it is SOOOOOO LOUD!!!!!! Then I was at a Wawa and a random guy came out shaking his head, so I got out and said "Do you hear that"? He said it reminded him of his truck he had about 15 years ago....he said it is the Plate between the engine and tranny, which is the flex plate, he said his had a small crack in it and started out pretty loud and got louder and louder day by day......he said his mechanic said the crack went to the area it is bolted and got louder.....but he said he replaced the flex plate and the noise stopped.......the whole time his truck ran fine, just loud.......so the general consensus is I need to replace the flex plate.....hopefully it will not cost that much......the rough price I got from 5 different guys was around $400-800.....so im gonna get it fixed and sell the Expedition, anyone wanna buy it? I love it but I wanna get something newer since I can probably get a helluva deal on something newer.
I focused on the flywheel and discovered a bit of a wobble at 1050 rpm. I carefully scoped out the noise position with a Stethoscope and discovered that the engine block itslef had no clatter but the oilpan sounded like a drum (That's odd). The viewing port on a FORD is very small so I could not see much of Flywheel. I scoped the metal plate between the engine and tranny and discovered a loud clatter spot there. Based on all this I took the vehicle to Transmission repair shop and $630.00 later the cracked Flywheel was replaced and the noise is gone.
\015\012I apparently had about 100 km's to a catastrophic destruction of the Flex-Plate ("Flywheel"). Again the clatter sounded much like loose main bearings BUT there was no noise on the block itself, ruling out a loose crankshaft.
\015\012Thanks for your help.
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