Return line issues
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Joined: Jan 2015
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Return line issues
I have replaced my return lines after a leak and they keep popping off. I have them on super tight and i dont know if im building too much pressure somehow but i cant seem to figure out the issue any help?
Logistics Pro
Joined: Sep 2007
Posts: 3,737
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From: Western Mass
What do you mean by popping off? Are the lines between the injectors coming off? or is this someplace else you're talking about.
There shouldn't be much pressure running through, but its possible the return line to the tank is blocked somewhere. You could try disconnecting the line at the rear of the engine that goes down to the tank and trying to blow through it. You should hear bubbles in the tank.
There shouldn't be much pressure running through, but its possible the return line to the tank is blocked somewhere. You could try disconnecting the line at the rear of the engine that goes down to the tank and trying to blow through it. You should hear bubbles in the tank.
Thread Starter
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New User
Joined: Jan 2015
Posts: 5
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What do you mean by popping off? Are the lines between the injectors coming off? or is this someplace else you're talking about.
There shouldn't be much pressure running through, but its possible the return line to the tank is blocked somewhere. You could try disconnecting the line at the rear of the engine that goes down to the tank and trying to blow through it. You should hear bubbles in the tank.
There shouldn't be much pressure running through, but its possible the return line to the tank is blocked somewhere. You could try disconnecting the line at the rear of the engine that goes down to the tank and trying to blow through it. You should hear bubbles in the tank.
Logistics Pro
Joined: Sep 2007
Posts: 3,737
Likes: 179
From: Western Mass
Yes the lines in between i have checked and there is no blockage but they pop off i also have where my tank switchover valve is stuck inbetween tanks so it wont turn on the electric pumps and i wish i could just bypass it without buying a new valve w/o spending money because i have none
If your selector valve is stuck partway, the return line could be blocked there where it won't go to either tank, or be restricted enough it backs up and pops off.
i ain't rite
Joined: Mar 2005
Posts: 65,573
Likes: 5,609
From: Marlboro Mental Hospital.
correct. no electric pumps on a diesel unless one was added.
what do you mean by the selector is stuck between tanks? are you saying it is drawing from both tanks at the same time?
if this is the case, it is possible the return is blocked in the selector valve.
what do you mean by the selector is stuck between tanks? are you saying it is drawing from both tanks at the same time?
if this is the case, it is possible the return is blocked in the selector valve.
Fleet Owner
Joined: Jul 2006
Posts: 20,383
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From: Mi'kma'ki
remove the lines from the selector valve and bypass it.simply hook up the rear tank (delivery and return) and keep the switch in the cab on the rear switch.now you'll have the fuel gauge reading correctly,no more issues with the return lines popping off because the fuel will return directly back into the rear tank without the blockage of the bad selector valve.won't cost ya anything if you've got some diesel rated hose laying around and you'll be good to go with just the rear tank.
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