'78 Westy FI: My brand new Bosch fuel pump was making a lot of noise. I decided to do the pump volume test to find out if I had a blockage somewhere starving the pump (not MY Bus ) or a defective pump (of course that must be the problem).
I disconnected the hose from the cold start valve and connected my test hose running to a clear plastic container that I had marked off at 2 liters, which should have taken 2 minutes or less to fill according to the AFC manual.
When I fired up the pump, it was making its noise, and fuel was BARELY coming out of the hose. Yikes! I disconnected the fuel filter and looked down inside the inlet. It looked clean and was not full of rust or gunk. I was able to blow through it easily.
So, I hooked up my air compressor and forced air back up the line to the tank. Apparently, debris must have collected at the tank outlet because after I did that, fuel was flowing like crazy. The pump put out 2 liters of fuel in 45 seconds, and stopped making noise!
Using the access hole cut by a previous owner, I pulled out the fuel gauge sender to have a peek into the tank. It does not appear rusty at all, even at the seams (as best I could tell with a bright flashlight and a mirror), but I did see a number of small pieces of debris laying on the bottom of the tank which I assume I've redistributed by blowing in the compressed air.
This is not a permanent fix, but I'm wondering how long it might be until the junk collects enough to cause blockage again??? I'm guessing a lot of this collected when I completely drained my tank for the engine removal a couple of months back.
Thoughts? Thanks!
Gas Tank Outlet Blockage
- vwlover77
- IAC Addict!
- Location: North Canton, Ohio
- Status: Offline
Gas Tank Outlet Blockage
Don
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78 Westy
71 Super Beetle Convertible Autostick
"When we let our compassion go, we let go of whatever claim we have to the divine." - Bruce Springsteen
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78 Westy
71 Super Beetle Convertible Autostick
"When we let our compassion go, we let go of whatever claim we have to the divine." - Bruce Springsteen
- Sluggo
- Wishin' I was Fishin'
- Location: Portland, Or.
- Contact:
- Status: Offline
Who knows? Could be a year. Could be later today. I'd say pull it and restore it if you can. Maybe you can drain it then pull the outlet and flush it out as a temporary fix.
1977 Bus with Sunroof - "Lucky '77"
2000cc Type IV w/Dual Weber 36s,
Aircooled.net SVDA w/Compufire,
Redline Weber Fuel Pump,
Holley Regulator,
Half Ass Brush & Roller Rustoleum Paint Job,
Incomplete Custom Interior,
Dual Batteries,
Crunched Slider Door.
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- DurocShark
- IAC Addict!
- Location: A Mickey Mouse Town
- Contact:
- Status: Offline