knocking HELP

[Eric99]

My dads 1999 F350 cc dually runs fine shifts fine but theres a loud knocking sound almost like a rod butits commin from the tq converter cover. Does anyone know anything about this noise????

[dieseldan2005]

are you sure its not comming from the back of the engine on the drivers side up top? The 7.3's can do what they call cackle. It sounds like a rod knock, but its actually the injector making noise.

[Eric99]

I listened with a scop up top, on the side, from the front and got under the truckstuck it to the coverter inpection plate and it almost blew my eardrums out its commin from the converter I think

[dieseldan2005]

huh, maybe the torque converter is coming apart? How many miles are on it?

[Eric99]

It just hit 200000

[dieseldan2005]

It might be time for a new one if its never been replaced before.

[Eric99]

Thats what I was thinkin a guy had told him the fins break or somthin and will make it knock

[ipz2222]

Common problem. Dual clutch fins wearing into the cover, gets too much clearance and then the knocking noise.You can replace the tc but at 200000, I'd just do the whole trans.