I have a 91 Chevy truck and there is a pin hole leak in a gas return
line in the fuel pump outlet, right before it enters the hose. I'm
not going to spend $250 to buy a new in-tank fuel pump (that's what I
was quoted), when the pump works fine. I would have thought the JB
Weld would be fine, but if not, I will have a guy solder it or braze
it (after all the gas is flushed out by pumping water thru it). But
the JB Weld is the easiest and cheapest method to fix it.
Also, these lines have a gas hose with some really weird fittings that
need some special tool. The guy at the parts store told me I cant
just use regular fuel hose and clamps because fuel injection engines
have high pressure. How high can it be? I doubt it comes even close
to the 100psi rating of the gasline hose, and if it does, I'll use air
compressor hose rated at 300psi. At the same time, I had a guy who
works on cars as a hobby tell me that he has used gasline hose for
fuel injection lines. So, who is right? I tend to think that auto
parts store guy wanted to get his grubby hands into my wallet with his
$250 fuel pump, $20 special tool, and $28 special hose. $300 to fix a
damn fuel line leak is insane (not to mention the hassle of removing
the whole gas tank).
I hate working on these newer cars. Give me something prior to 1970
to work on, when things were still simple and parts were not sold by
crooks.
Jimw
the jb will work. get it good and clean and dry and somewhat warm.
Then let it cure a full 24 hours. Don't use the jb quick.
s
What is fuel pump pressure, its probably low and a rubber piece
spliced in with clamps will be just fine, the pressure rating on those
hoses is im sure 5-10x what you have. I did it but needed 2 clamps on
each side. Id try JB first but clean well with Laquer thinner and
steel wool, alcohol and gas leave a residue. Braze it, that sounds
crazy since rust caused your issue and you dont have much metal left.
When my 91 Toy rusted a brake line out, within a year the fuel line
was shot from salt. When the brake line went I hit another car, check
yours, if they are all in the same location be carefull. JB even fixed
my plastic radiator top section at 10f, 4 years ago. Why did it break,
is the tank loose causing stress? Even my tank straps rusted away.
some modern vehicles pressure is over a 100 pounds, my 1990 caravans
normal pressure was over a 100 pounds, I found this out after putting
a pressure gauge on mine and driving around.
it would dsrop low occasionally causing vehicle stumble.
replace the pump to avoid a nasty gas leak and possible fire, or patch
line with proper high pressure hose.
You mention a return line. Which is most likely rather low
pressure. I'd try the JB weld. as the other writer mentions.
The are needs to be clean and dry. And allow 24 hours for
curing time befor using the vehicle.
--
Christopher A. Young
Learn more about Jesus
www.lds.org
.
"Jimw" <ji...@mail.is.invalid> wrote in message
news:aggp15pqljd1hht6k...@4ax.com...
he SAID it was a return line. in fact the OP's statement to that effect
is STILL attached to this up above.
Before you take your truck out for a post repair road test, stop by
NAPA. Autozone, Carquest or Pep Boys and buy a couple of the biggest
fire extinguishers they make. Take a cell phone with you and plan your
route to be within a mile of your local Fire Department. Try to stay
away from public places where people could be endangered. Keep in mind
that after the big conflagration, the FD will assign a cause to the
blaze, thereby canceling your insurance.
Of course, Finnegan's Law may not apply to you, in which case, best of
luck.
If you know someone really good with a welding torch, pros for years
have repaired metal fuel lines with silver solder. Requires much less
heat than braze, and has similar strength. You might even skip the
fire extinguishers.
Joe
Isn't Finnegan's Law "If I'm not with the girl I love, I love the girl
I'm with"?
No comment on the JB weld, but use the special fuel injection hose and
the proper fuel injection clamps. They work, and although about double
the cost of good regular fuel line and clamps, it will outlast them
more than 3:1 on an EFI system.
Don't even think about air hose - the fuel will destroy it in short
order.
>On Wed, 27 May 2009 04:58:03 -0700 (PDT), bob haller <hal...@aol.com>
>wrote:
>
>>some modern vehicles pressure is over a 100 pounds, my 1990 caravans
>>normal pressure was over a 100 pounds, I found this out after putting
>>a pressure gauge on mine and driving around.
>
>On injected cars there are usually 2 fuel pumps, a small one to get
>the gas out of the tank and a booster pump up on the engine to get the
>100+PSI for the injectors.
Have not seen that on any cars in North America for over 20 years.
There are several Fuel tank repair products that you could use that
are made
to be impervious to gasoline:
http://www.acehardware.com/family/index.jsp?categoryId=1258970&cp=1255100
http://store.summitracing.com/partdetail.asp?part=LCT-988638