Posted by pete 23 on June 22, 2022 at 11:17:11 from (45.52.43.35):
In Reply to: Diesel overflow posted by Stroby on June 22, 2022 at 04:06:01:
Long story here and some of it may be talking through my hat as they say. But, some gasoline start diesel engine tractors IH sold ran the fuel return into top of tank to a pipe that extended down to near bottom of tank inside tank.
I guess this was to reduce foaming so I was told. It also was inconvenient when working on pump when you removed fuel return line down at pump, you had the suction effect if any fuel was still in the return line so fuel would keep running. Had to blow back into tank to eleminate the effect, after removing cap and covering with rag of course.
First experience I had with that was a 450 Farmall diesel and no power. Running on dyno you could see air bubbles coming up through the water trap drain. Well, everyone says, sucking air is your problem. Realize at that time my experience with Diesels was near zero. Never even stood along side one until I started working for IH dealer.
I called Diesel repair shop, talked about the issue, and he suggested maybe the return line inside tank had fallen off and was aerating the fuel. That didn't sound reasonable to me. I had to put on my think hat, not hot air hat, and I removed fuel supply line from tank and found very little fuel would flow from tank. Stuck and object in through outlet and a piece of tin was covering outlet.
The baffle inside of tank had come loose covering outlet. I cut a groove in the stand pipe of the outlet fitting, put her back together, horse power is now just fine and now I'm the diesel (expert) .
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