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This dump truck has two gas tanks, but at 1/2.

Tiny
ANONYMOUS
  • MEMBER
  • 1998 GMC C3500
  • 35,250 MILES
This dump truck has two gas tanks, but at 1/2 tank it will run out of gas. Does the rear tank have a pump or is there a transfer pump some were? Thank you!
Saturday, April 6th, 2013 AT 12:47 AM

5 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Each tank has a pump.

The one that stops working may have a hose failure in the tank. Have it checked

Roy
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Saturday, April 6th, 2013 AT 12:49 AM
Tiny
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Some times when I turn the key on you can hear a rattle sound noise for one sec. Then it stops! Is there a chance that it has a frame pump to?
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Saturday, April 6th, 2013 AT 12:58 AM
Tiny
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Should not be. The pump will run for seconds key on engine off.

The pump will start up when cranking and running

Roy
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Saturday, April 6th, 2013 AT 1:00 AM
Tiny
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Sorry for all this, But I dont know! The rattel noise is different then the huming noise from the one fuel pump you always here when I turn the key on!
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Saturday, April 6th, 2013 AT 1:09 AM
Tiny
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Ok, lets do this. Start with a fuel pressure test on both tanks to see what kind of pressure is coming. You can rent one from a parts store with instructions

Roy
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Saturday, April 6th, 2013 AT 1:11 AM

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