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01-30-2012, 08:28 PM
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#1 |
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Registered User
Join Date: Oct 2006
Location: Central Coast, CA.
Posts: 1,202
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Fuel leak on diverter valve vent
I have fuel leaking out of the vent tube on the fuel diverter valve on the wife's 85 Silverado. Is my valve bad or is there another possibility why there is fuel coming out? It doesn't do it with the key on, only while running. BTW, it's fuel injected with TPI now.
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Mom's 1954 (TBI 5.7/700R4/14 bolt 4:10) 5 Chevrolet window 3/4 ton long bed Pick up build thread ->http://www.67-72chevytrucks.com/vboa...d.php?t=228674 My 1954 (TPI 5.7/700R4/10 bolt 3:73) Chevrolet 5 window 1/2 ton short bed Pick up build thread->http://67-72chevytrucks.com/vboard/s...3&goto=newpost 1960 (400/T350/?) Apache 10 short/fleet side-big window 1973 (TPI 5.7/700R4/14 bolt 4:10 w DANA 60 front) Chevrolet Cheyenne 4X4 2013 (Vortec 5.3/6-speed 6L90 automatic) Sierra LT CREW CAB Doing my part to warm the globe 
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01-30-2012, 08:34 PM
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#2 |
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Registered User
Join Date: Oct 2006
Location: Central Coast, CA.
Posts: 1,202
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Re: Fuel leak on diverter valve vent
Here's an older picture of her with the 10 bolt and DANA 44 wearing 33's and an old rusty rear bumper. Now she has a DANA 60 up front and a 14 bolt out back with the NP205 Transfer Case. We went with Weld wheels 17X10 and BFG ALL TERRAIN 35's. New pics to follow...
__________________
Mom's 1954 (TBI 5.7/700R4/14 bolt 4:10) 5 Chevrolet window 3/4 ton long bed Pick up build thread ->http://www.67-72chevytrucks.com/vboa...d.php?t=228674 My 1954 (TPI 5.7/700R4/10 bolt 3:73) Chevrolet 5 window 1/2 ton short bed Pick up build thread->http://67-72chevytrucks.com/vboard/s...3&goto=newpost 1960 (400/T350/?) Apache 10 short/fleet side-big window 1973 (TPI 5.7/700R4/14 bolt 4:10 w DANA 60 front) Chevrolet Cheyenne 4X4 2013 (Vortec 5.3/6-speed 6L90 automatic) Sierra LT CREW CAB Doing my part to warm the globe
Last edited by Daniel U; 01-30-2012 at 08:49 PM. |
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01-30-2012, 08:40 PM
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#3 |
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Registered User
Join Date: Oct 2006
Location: Central Coast, CA.
Posts: 1,202
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Re: Fuel leak on diverter valve vent
Here's some more current ones for the picture junkies...
__________________
Mom's 1954 (TBI 5.7/700R4/14 bolt 4:10) 5 Chevrolet window 3/4 ton long bed Pick up build thread ->http://www.67-72chevytrucks.com/vboa...d.php?t=228674 My 1954 (TPI 5.7/700R4/10 bolt 3:73) Chevrolet 5 window 1/2 ton short bed Pick up build thread->http://67-72chevytrucks.com/vboard/s...3&goto=newpost 1960 (400/T350/?) Apache 10 short/fleet side-big window 1973 (TPI 5.7/700R4/14 bolt 4:10 w DANA 60 front) Chevrolet Cheyenne 4X4 2013 (Vortec 5.3/6-speed 6L90 automatic) Sierra LT CREW CAB Doing my part to warm the globe
Last edited by Daniel U; 01-30-2012 at 08:51 PM. |
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01-31-2012, 07:13 PM
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#4 |
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Registered User
Join Date: Oct 2006
Location: Central Coast, CA.
Posts: 1,202
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Re: Fuel leak on diverter valve vent
Hmmmm, maybe I should re-post this in another forum?
__________________
Mom's 1954 (TBI 5.7/700R4/14 bolt 4:10) 5 Chevrolet window 3/4 ton long bed Pick up build thread ->http://www.67-72chevytrucks.com/vboa...d.php?t=228674 My 1954 (TPI 5.7/700R4/10 bolt 3:73) Chevrolet 5 window 1/2 ton short bed Pick up build thread->http://67-72chevytrucks.com/vboard/s...3&goto=newpost 1960 (400/T350/?) Apache 10 short/fleet side-big window 1973 (TPI 5.7/700R4/14 bolt 4:10 w DANA 60 front) Chevrolet Cheyenne 4X4 2013 (Vortec 5.3/6-speed 6L90 automatic) Sierra LT CREW CAB Doing my part to warm the globe
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01-31-2012, 09:39 PM
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#5 |
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Registered User
Join Date: May 2007
Location: CO
Posts: 475
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Re: Fuel leak on diverter valve vent
If you're using the original '85 carb version of the fuel switching valve, it is not designed to handle the higher pressures required of a FI setup. You may investigate whether the 87 model valve (FI that year) is rated to handle the additional fuel pressure.
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02-02-2012, 07:22 PM
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#6 |
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Registered User
Join Date: Oct 2006
Location: Central Coast, CA.
Posts: 1,202
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Re: Fuel leak on diverter valve vent
The fuel pump isn't "in tank" but is in-line after the tanks on the frame rail for that reason. I'm headed out to go replace it now. Not sure why else fuel would leak from the vent tube?
__________________
Mom's 1954 (TBI 5.7/700R4/14 bolt 4:10) 5 Chevrolet window 3/4 ton long bed Pick up build thread ->http://www.67-72chevytrucks.com/vboa...d.php?t=228674 My 1954 (TPI 5.7/700R4/10 bolt 3:73) Chevrolet 5 window 1/2 ton short bed Pick up build thread->http://67-72chevytrucks.com/vboard/s...3&goto=newpost 1960 (400/T350/?) Apache 10 short/fleet side-big window 1973 (TPI 5.7/700R4/14 bolt 4:10 w DANA 60 front) Chevrolet Cheyenne 4X4 2013 (Vortec 5.3/6-speed 6L90 automatic) Sierra LT CREW CAB Doing my part to warm the globe
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02-04-2012, 10:52 AM
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#7 |
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Registered User
 
Join Date: Apr 2009
Location: New Freedom Pa.
Posts: 1,335
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Re: Fuel leak on diverter valve vent
Make sure everything is connected properly
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02-04-2012, 07:57 PM
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#8 |
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Registered User
Join Date: Oct 2006
Location: Central Coast, CA.
Posts: 1,202
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Re: Fuel leak on diverter valve vent
Thanks man! I've got the old one off and I'm getting ready to install the new one now with new hoses and clamps as they are 27 years old.
__________________
Mom's 1954 (TBI 5.7/700R4/14 bolt 4:10) 5 Chevrolet window 3/4 ton long bed Pick up build thread ->http://www.67-72chevytrucks.com/vboa...d.php?t=228674 My 1954 (TPI 5.7/700R4/10 bolt 3:73) Chevrolet 5 window 1/2 ton short bed Pick up build thread->http://67-72chevytrucks.com/vboard/s...3&goto=newpost 1960 (400/T350/?) Apache 10 short/fleet side-big window 1973 (TPI 5.7/700R4/14 bolt 4:10 w DANA 60 front) Chevrolet Cheyenne 4X4 2013 (Vortec 5.3/6-speed 6L90 automatic) Sierra LT CREW CAB Doing my part to warm the globe
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