ATTN: Walbro Fuel Pump Users

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proconcept23
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ATTN: Walbro Fuel Pump Users

Post by proconcept23 »

So I pulled my fuel pump today because I was having some strange symptoms. Ever since I put the pump in, I would run out of gas around when the gauge read 1/4 full. That didn't bother me too much, but I have also been having strange idle problems from time to time. They have been getting worse.

Anyway, here is the culprit:
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This is the section of fuel line that comes WITH THE PUMP from walbro. It is the line that comes directly off the pump exit, on top of the pump, and leads to a hard line on the pump bracket. When I pulled it out, it was gooey, frayed, and really loose. I didn't even have to loosen the clamps to get the hose off.

Long story short, if you guys have a walbro pump in your car, you might want to check this hose. All other fuel lines inside the tank and otherwise still look good. This one was the only culprit.

Nothing bad against Walbro, as the pump works great and maybe I just got sent the wrong hose, or maybe there was a bad batch of hoses in one of the production runs.

-Jon
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schmauster920
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Post by schmauster920 »

Thanks for the info!!

SUBMERSIBLE FUEL INJECTION hose is what we all need


Its not the same as regular fuel injection hose, thats why it degrades over time.
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proconcept23
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Post by proconcept23 »

:/ wish i would have known that....haha thank you!
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Post by kablammyman »

thanks for the heads up! I will soon install one of these, so now i know what to avoid/upgrade.
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schmauster920
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Post by schmauster920 »

It looks like the outside of the hose just disintegrated lol


I have had my walbro/sock filter jammed onto the bottom of the tank. It was really loud, and im sure it wouldnt have lasted all that long.. If that hose is too long, it wont let the assembly rest on the spring/leg that sits on the bottom of the tank.

Just another thing to think about when reinstalling/changing the hose.
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Post by Super Coupe »

schmauster920 wrote:Thanks for the info!!

SUBMERSIBLE FUEL INJECTION hose is what we all need


Its not the same as regular fuel injection hose, thats why it degrades over time.
You are correct. 30R10 is subermersible. Also just a note, you want 30R9 for the line going to your aftermarket FPR if you have one, it is also compatible with e85. Autozone carries it. Regular fuel injection hose will work everywhere else (make sure it FI hose).
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Post by sx moneypit »

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Post by p00t »

Thank you for giving me another thing to worry about! I cant remember if I used the hose that came with my kit.

Proconcept were you using E85 or normal pump gas?
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Post by z240xs »

very very good post for people to read
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Post by proconcept23 »

91 octane pump gas
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Post by KA-Life86 »

Ethanol?
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Post by wesamiss »

thanks for the heads up, im going to check mine and replace is with submersible fuel hose, this up coming weekend. Id hate to have my car boosted then pressure suddenly drop in boost, cause the hose in the tank fails.
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Post by proconcept23 »

KA-Life86 wrote:Ethanol?
91 octane gasoline, not ethanol.
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Post by night_krawler »

great tip, I'm going to have to check mine also
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Post by Super Coupe »

proconcept23 wrote:
KA-Life86 wrote:Ethanol?
91 octane gasoline, not ethanol.

Did the gas contain any Ethanol?

A lot of gas pumps here in FL use 10% or less Ethanol with regular gas.
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Post by proconcept23 »

Super Coupe wrote:
proconcept23 wrote:
KA-Life86 wrote:Ethanol?
91 octane gasoline, not ethanol.

Did the gas contain any Ethanol?

A lot of gas pumps here in FL use 10% or less Ethanol with regular gas.
hmmm. not sure to be honest. would it matter all that much as far as this is concerned? my understanding from the previous responses here is that proper fuel line will work when submerged in both gasoline and ethanol.
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Post by proconcept23 »

just a quick update on this for you guys...
the Gates submersible fuel line is a whopping $25 a foot, and was a special order item from my local checker/o'riley. hope it doesnt deteriorate!
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Post by niceguy »

Just thought I'd post my 2 bits, I've changed pumps 3 times over the last year chasing fuel pressure drop problems and still have the original '93 fuel lines attached to the pump that sit in the tank. There is still no evidence of line damage to the original OEM fuel line at all so hope that helps...not sure what material that posted fuel line is but I've never received any hose/line with a walbro pump.
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Post by kablammyman »

i also used the oem fuel line with my pump. I'm not worried about it deteriorating.
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Post by proconcept23 »

kablammyman wrote:i also used the oem fuel line with my pump. I'm not worried about it deteriorating.
this thread is concerning the bit of fuel line that comes WITH the walbro kit, not the stock line. had i kept my stock line, i probably would not be having this issue. i simply assumed that the line that came with the kit would work. it certainly did not.
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Post by kablammyman »

proconcept23 wrote:
kablammyman wrote:i also used the oem fuel line with my pump. I'm not worried about it deteriorating.
this thread is concerning the bit of fuel line that comes WITH the walbro kit, not the stock line. had i kept my stock line, i probably would not be having this issue. i simply assumed that the line that came with the kit would work. it certainly did not.
i feel you man. Its because of this thread, I didn't use the line that came with my walbro, I shoulda been more clear, lol 8)
1987 integra rs-t
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