After Market Fuel Pump.. Need help

**llhls1** · 04-28-2008, 06:50 PM

Bought walbro fuel pump for 99 camaro.. hose will NOT stay on it in the tank. It has literally blown the hose off twice! Anyone had this problem? How to fix for good? Used hose clamps, didn't work.. is there something special?

**jperkins812** · 04-28-2008, 07:13 PM

Which hose are you talking about? Is it the filler neck, or the hoses on top of the sending unit assembly?

**LT1 > LS1** · 04-28-2008, 07:18 PM

Originally Posted by jperkins812

Which hose are you talking about? Is it the filler neck, or the hoses on top of the sending unit assembly?

i think he said the outlet of the fuel pump

he siad it ran great until it blew off. pushin about 65 psi i think he said.

**llhls1** · 04-28-2008, 07:39 PM

Neither.. it is coming off of the pump in the tank, before it can reach the fuel pressure regulator. Runs fine until hose comes off! First time went 2 weeks, had used factory hose. Second time, went 3 days, used hose and clamps that came with it. Kind of tired of taking tank out.

**jperkins812** · 04-28-2008, 07:39 PM

If he has the lines installed properly and the locks in place, the fittings may not be able to hold the pressure. I have a friend that just installed a Walbro 255 in his 99 SS and he has no problems with his fuel lines at all. There maybe a problem with the fittings, especially the area around the lock.

**jperkins812** · 04-28-2008, 07:42 PM

Did the pump come with a new section of line when you bought it? You may want to try replacing the line if you haven't already, just make sure that you buy fuel injection hose that will handle the pressure.

**llhls1** · 04-28-2008, 07:46 PM

Ok, sorry.. dumb question.. what are you referring to when you say "lock"? A new piece of hose was supplied, used that second. BUT, we used the clamps they supplied. I was wondering if maybe should get Fuel injection hose clamps.. The ones that came with it were the reg. worm clamps. Maybe?

**RacerBob** · 04-28-2008, 07:46 PM

If you are talking about the hose in the bucket assy, I did not have a problem. Did you use the plastic hose that came with the fuel pump? BTW, I installed a Racetronix pump. I believe they are made by the same company.

**jperkins812** · 04-29-2008, 03:05 PM

Originally Posted by llhls1

Ok, sorry.. dumb question.. what are you referring to when you say "lock"? A new piece of hose was supplied, used that second. BUT, we used the clamps they supplied. I was wondering if maybe should get Fuel injection hose clamps.. The ones that came with it were the reg. worm clamps. Maybe?

Don't worry about the locks I mentioned, because I didn't know that you meant the hose in the pump, not on top of the sending unit. I would try the fuel injection clamps, they tend to seal better and I would also get a new piece of fuel injection hose also.

**LT1 > LS1** · 04-29-2008, 06:14 PM

okay, i talked to a guy that knows LS1's very well

he siad to take the line off the pump, and blow some air through there, and see if the air comes out of the pressure regulator without resistance. LS1's someitmes have a problem of the regulator getting stuck down, and that could cause a back up, and blow the hose off.

check all the lines for resistance by blowing compressed air through them as well.

thats your best bet.