i think what you're talking about is about 1.5" by maybe 2". it's a canister in front of the fuel tank under the car. The other thought -- is the pump wired backwards?
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Need a bit of help with the Walbro 255 Fuel Pump install
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8.5 custom arias pistons (.020 over)
eagle rods
t70 turbo (man was that a squeeze)
38 mm external wastegate
mild port/polish
3 angle valve job
custom intercooler piping
twin external intakes with z32 maf
rad moved back
3" exhaust with only a resonator
romulator
420cc injectors
custom body work, homemade oil lines and fittings..
walbro 255lph in-line fuel pump.... and lots of headaches... lol
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t70 wrote: i think what you're talking about is about 1.5" by maybe 2". it's a canister in front of the fuel tank under the car. The other thought -- is the pump wired backwards?KILL HADJI
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craZed wrote: Have you checked to see if the fuel filter is clogged?Fuel filter is a brand new Z32 unit.
Alex86na2t wrote: Also you can check to see if you have the polarity on the pump right by taking of the hose and see if it acts like a fountain !!!Be Careful if you try this!!! make your you have many towels around. If it doesn't and you can hear it run then you might have the polarity backwards.Originally posted by Andrew84zx
tell her your car is so fast it will make her panties fly off
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take the fuel line off before the filter.. if it doesn't squirt when the pump comes on then you've either got the polarity backwards or the line is pooched. The little in-line filter under the passengers side rear fender-well is only on the return line as i recall so it can't plug your system off. When you check for flow -- i usually use a pop bottle and stick the hose in it. The next line you can check is under the passengers side fender well next to the little black filter. As i recall it's the center fuel line or the one closest to the outside of the car... trace them up front and see. The first thing i would do though is try polarity reversal at the plug-in inside the rear hatch after you check the fuel flow before the filter.8.5 custom arias pistons (.020 over)
eagle rods
t70 turbo (man was that a squeeze)
38 mm external wastegate
mild port/polish
3 angle valve job
custom intercooler piping
twin external intakes with z32 maf
rad moved back
3" exhaust with only a resonator
romulator
420cc injectors
custom body work, homemade oil lines and fittings..
walbro 255lph in-line fuel pump.... and lots of headaches... lol
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Yeah so apparently the pump just doesn't push the fuel enough. It comes out of the fuel hoses but isn't enough for the injectors. Anyone have a problem with purchasing a knock-off Walbro labeled as a Walbro? I'm not very happy to say the least.Originally posted by Andrew84zx
tell her your car is so fast it will make her panties fly off
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FlawleZ wrote: Yeah so apparently the pump just doesn't push the fuel enough. It comes out of the fuel hoses but isn't enough for the injectors. Anyone have a problem with purchasing a knock-off Walbro labeled as a Walbro? I'm not very happy to say the least.
As for it being a knockoff, does it say walbro on the pump? I got my no-box no-name except stamping on the pump walbro on ebay for like $90 and (obviously) it works great. Could be you got a defective one?
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[quote]Jason84NA2T wrote:Originally posted by FlawleZYeah so apparently the pump just doesn't push the fuel enough. It comes out of the fuel hoses but isn't enough for the injectors. Anyone have a problem with purchasing a knock-off Walbro labeled as a Walbro? I'm not very happy to say the least.
sounds like it just won't build pressure? Could be a defective pressure relief valve in the pump.
As for it being a knockoff, does it say walbro on the pump? I got my no-box no-name except stamping on the pump walbro on ebay for like $90 and (obviously) it works great. Could be you got a defective one?Originally posted by Andrew84zx
tell her your car is so fast it will make her panties fly off
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Yep, I just don't trust the quality of ebay knock-offs. I will test the pump just to make sure, but since I have others laying around, a swap will tell the story.Chuck Stong
300+ Parts and Performance owner
http://www.300-plus.com
2002 ZCOT president and always active member
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do it anyways. pull the line off of the inlet to the filter and see if you spill fuel on the ground for the 1 second that you have the key on for. If you dont and you can hear the pump turning on then trace your problem from the filter back to the pump. If you still cant figure it out, take the walbro out of the tank and dunk it in a half gallon of gas(DO NOT USE ANYTHING BUT GAS!) put power to it and see if it pumps. If it does you never found your problem and you need to look harder, if it doesnt you have a bad pump.
Edit: Nevermind, Just noticed the rest of the thread about it possibly being a knock off85 Z31 6.0 LSX turbo 766whp/792wtq
04 GTO, LS6, big cam, porting, N20... underway for summertime daily driver.
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Found a wiring problem. Seems to work ok now. Pump was getting about 8v.Chuck Stong
300+ Parts and Performance owner
http://www.300-plus.com
2002 ZCOT president and always active member
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