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nissan
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Discussion Starter · #1 ·
Hi Guys
I am looking to tap into the diesel supply to run a diesel heater. I can:
1 tap into the main fuel line.
2 tap into the fuel return line.
3 drill a hole in the top of the tank and drop in a line.
4 tap into the line from the sub tank to the main tank.
My question is: is there a pump inside the fuel tank or does the motor suck the fuel?
Other comments welcomed such as would the motor pump suck through the diesel heater pump and introduce air bubbles.
Cheers

Russell
2004 GU Ute.
 

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GQ Dual Cab. TD42Ti with fruit.
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Your vehicle in standard spec does not have an in tank or lift pump. It only has the injector pump to do both jobs.

I would be very reluctant to make any additions to the engine fuel delivery. My suggestion is that you keep it separate.
 

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GQ 1992 TD42 NA lwb
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Hi Guys
I am looking to tap into the diesel supply to run a diesel heater. I can:
1 tap into the main fuel line.
2 tap into the fuel return line.
3 drill a hole in the top of the tank and drop in a line.
4 tap into the line from the sub tank to the main tank.
My question is: is there a pump inside the fuel tank or does the motor suck the fuel?
Other comments welcomed such as would the motor pump suck through the diesel heater pump and introduce air bubbles.
Cheers

Russell
2004 GU Ute.
I would just mount a 10ltr tank separately you should have enough room on the ute or under tray yeah?
 

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nissan
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I would add a lift pump to the main fuel line and tee off to a tap immediately after the lift pump.
 

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nissan
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I just drilled Into the fuel sender unit and inserted a standpipe for the same purpose in a GQ. I’m pretty sure you could also T off the fuel line intake but I didn’t really want to introduce any potential problems into the vehicle fuel system.
 

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nissan
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After a quick google, I found this.

Using a simple solenoid fuel pump (seems to be self priming...) and just run a new line into the tank. I expect you could take this feed from the existing fuel supply line, however you want to be very careful that there is no possibility for air to be pulled into the circuit by the IP.
 

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As above . But dont just drill anew hole into the top of the tank. It will introduce other issues.
 

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Discussion Starter · #8 ·
Thanks Guys. I am tending towards a standpipe. Someone else said they tapped into the fuel return line. This would be safer than the main fuel line, but how does it continuously get fuel? Does the return line drop into near the bottom of the tank?
 

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Thanks Guys. I am tending towards a standpipe. Someone else said they tapped into the fuel return line. This would be safer than the main fuel line, but how does it continuously get fuel? Does the return line drop into near the bottom of the tank?
No, it goes back into the top of the tank.
 

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Thanks Guys. I am tending towards a standpipe. Someone else said they tapped into the fuel return line. This would be safer than the main fuel line, but how does it continuously get fuel? Does the return line drop into near the bottom of the tank?
From memory there is a breather hole at the top of the return line inside the tank which would stop you from drawing fluid back up.
 
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