Wassup everyone. I have a 379 Pete 1993 with a 3406b model and my engine is flooding with diesel. Took it to the shop and had one bad injector so I changed them all. Supposedly that was the problem but it’s still filling up. Anyone had this problem before or have any advice?
3406 b model engine flooding with fuel
Discussion in 'Peterbilt Forum' started by mrc_83, Nov 10, 2021.
-
-
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.
-
Blocked fuel return
Bean Jr. Thanks this. -
please explain flooding with fuel. Cylinder filling with fuel ,slobbering fuel at exhaust manifold,Cylinder hydrolocking with engine off???
shooter19802003 and Bean Jr. Thank this. -
The 90 degree fitting coming off of the back of the injection pump, and where the return fuel line connects, has a tiny orifice in it. This can get plugged and cause fuel pressure to go way up. I am not sure what happens if this is plugged, or what you mean by flooding with fuel, but it doesn't cost anything to check.
Roger McG, shooter19802003 and cke Thank this. -
Is fuel getting into the oil?
Roger McG, shooter19802003, cke and 1 other person Thank this. -
Restricted pump return will blow the side plate gasket out, a plunger would need to fail before the fuel could make it through the pump to the crankcase.
Its likely a line under the rocker covers is leaking if the nozzles were replaced.
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.