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Old 12-14-2007, 08:35 AM   #4 (permalink)
Diesel-Dan
FASS Tech Dept.
 
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Join Date: Dec 2005
Location: Marthasville, MO
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Quote:
Originally Posted by Shibbyutman View Post
I do have a suction tube, and my level was about 3/8s of a tank. but what concerned me is that after I topped the fuel tank off (literally fuel ran out) it was still doing it. Can the fuel get so airated that it would fluctuate like that?
Did it eventually stop after you filled up? With a full tank, you should have pretty solid pressure. It might have been working out some air from the low tank.

You might try the 5 gallon bucket test. Fill up a bucket with diesel. Put the return and suction line in the bucket. See if the pump sounds any different. If it sounds quieter, this might show a sign that you need to check out your draw tube in the tank. Check all fittings, height of tube off the bottom, etc.

Run with the full tank for a while and see if the issue reappears.

Did you have an in-tank pump? Is that why you went with the Suction Tube Kit?
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Dan MacDonald
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2001 2500, 4x4, Con OFEed, TBK, AFE Stage II kit W/ prefilter and 4" cowl mod. , FASS 150/150, Mach 2's, Drag Comp,

Currently running on B-100
'02 Jetta TDI 5 Speed "Mini Me" 45-50 MPG
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