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Hello fellow GS owners, it seems like i have a fuel leak right after I changed the fuel pump. I know where it is leaking from, but I can not see why it is leaking at all. One of the fuel lines that connects to the plastic fuel pump housing seems tl be the culprit, but the line is not damaged and the housing is not cracked. I installed the line back into the housing effortlessly and the locking clip snaps back in without issue. Is there a gasket that goes between the housing and the line that Im missing?
The connection on the right is leaking, but I already tried removing it a few times to make sure its installed correctly. It seems fine.
Hello fellow GS owners, it seems like i have a fuel leak right after I changed the fuel pump. I know where it is leaking from, but I can not see why it is leaking at all. One of the fuel lines that connects to the plastic fuel pump housing seems tl be the culprit, but the line is not damaged and the housing is not cracked. I installed the line back into the housing effortlessly and the locking clip snaps back in without issue. Is there a gasket that goes between the housing and the line that Im missing?
The connection on the right is leaking, but I already tried removing it a few times to make sure its installed correctly. It seems fine.
I just went out for a drive and tested the car, came back with a few drops dripping down from the car. When I let the car idle for a few minutes, the leak comes out fast and pools under the car.
I have a theory that I got the wrong higher flowing fuel pump so when the pump starts it builds too much fuel pressure with nowhere to go but out the connector. Doesnt happen as much when Im driving because the whole fuel system is flowing but happens when Im at idle where the fuel flow through the fuel system is low, thus creating a high pressure at the connector.
If someone have encountered such problems before, please I need advice.
I'm not 100% sure there is a gasket, but check this picture for reference, maybe you missed the gasket? I see 3 little rings, i'm just not sure though (never done a FP replacement):
I'm not 100% sure there is a gasket, but check this picture for reference, maybe you missed the gasket? I see 3 little rings, i'm just not sure though (never done a FP replacement):
I do not think there is a gasket, though I could be wrong. I remember removing the hose and did not see any gasket in between. I am going to get some gasoline resistant gasket maker and try to seal it up.
Maybe theres a tiny slit in the hose itself, or on the plastic elbow. Even if you ran a high flow fuel pump it should return the flow back into the tank.
Maybe if you grab a short piece of rubber hose and use a compressed air and access a spot maybe near the engine that you can easily remove the return line and shoot compressed air into it and have someone else see where the air hissing is coming from. If you dont find leaks, do the same for the feed line.
Worst case if its leaking at the fittings, you can buy 90 degree AN fittings that should slip right in there. But oem is best and safest!
Maybe theres a tiny slit in the hose itself, or on the plastic elbow. Even if you ran a high flow fuel pump it should return the flow back into the tank.
Maybe if you grab a short piece of rubber hose and use a compressed air and access a spot maybe near the engine that you can easily remove the return line and shoot compressed air into it and have someone else see where the air hissing is coming from. If you dont find leaks, do the same for the feed line.
Worst case if its leaking at the fittings, you can buy 90 degree AN fittings that should slip right in there. But oem is best and safest!
Thank you for your suggestion, but i already know where the leak is. I need a solution now.
Curious about the AN fitting idea, how would they go into the OEM plastic fuel pump assembly? It is plastic and non threaded.
Thank you for your suggestion, but i already know where the leak is. I need a solution now.
Curious about the AN fitting idea, how would they go into the OEM plastic fuel pump assembly? It is plastic and non threaded.
If the fitting are cracked and you were not able to find them new. An 90 degree AN fittings can be used, you remove the old swivel plastic. Size up the correct AN fitting threads, that matches the hole or use a drill to open up the hole. Slide the threaded end into the hole with teflon washers and teflon tape on the threads tighten the fitting.
Nothing against AN fittings but if there is a break in the plastic, a fracture or what ever, get a used hosing off fleabay and put your new pump in there. You have pulled the pump and confirmed there is a seal between the tank and the pump? Perhaps a picture and arrow would go a long ways to us using a screen to see this.
Nothing against AN fittings but if there is a break in the plastic, a fracture or what ever, get a used hosing off fleabay and put your new pump in there. You have pulled the pump and confirmed there is a seal between the tank and the pump? Perhaps a picture and arrow would go a long ways to us using a screen to see this.
Had a very hard time locating some gasket maker. Where im from there isnt a commercial auto parts store i can go to for parts. I must go to each small parts shop individually and i have been to 10 all over the city, no one sells such thing.
I found a distributor for a lesser known brand Loxeal but all their gasket makers are not recommended for use in plastic to plastic applications. They did offer to give me a sealent for plastic use that doesnt harden at all for my purpose. That didnt work so now im running out of ideas.
This last idea will be my last one before i call it quits and take it to a shop for diagnosis and repair. I have found out water pipe has those flat rubber round gaskets that MAY do the trick, if i can find out thin enough. The thinnest i found is 2mm
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2006 GS fuel leak
