Date: Fri, 4 Jun 2010 18:01:46 -0700
Reply-To: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Subject: Re: fuel pump straining and hose leaking question
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
a restricted fuel filter would explain the leak between filter and pump.
The system runs at a regulated 34 psi or so.
'if' you block that somehow, as in very restricted fuel filter...
the fuel pump can generate up to 100 psi against a full blockage.
obviously the first thing to do is get that fuel filter off there ..
see how restricted it is,
empty it out backwards on a clean dish to see what's in it.
I find ..
dirt particles,
rust,
water, and
shiny tiny flakes of metal - which I assume to be from the fuel pump.
not all 4 things are present most of the time of course...
but I sure find dirt in them.
it's handy to paint the month and year on the new filter when you put it
back in.
that way on your under-van meanderings and contemplating everything under
there, you can tell at a glance when the filter was last inspected or
replaced.
and I believe in fuel treatments now and then ..
Sea Foam, Lucas fuel injector cleaner, even Marvel mystery oil , in the gas.
Says 'fuel system lubricant' right on the bottle. I get mine in a gallon
jug.
but 'some' fuel treatment now and then.
if you suspect water .. a water absorbing fuel treatment of course.
Scott
www.turbovans.com
----- Original Message -----
From: "Don Hanson" <dhanson928@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Friday, June 04, 2010 4:32 PM
Subject: Re: fuel pump straining and hose leaking question
> Not trying to be a smart a** here but if your pump is 'whining louder'
> and
> that whining comes on after it (the pump) has run for a few seconds to
> build
> up the fuel pressure...and you have a leaky fuel hose at the connections
> from the pump to the filter only...you probably do have a clogged up
> filter. The pumps are designed to build substantial pressure..so yeah, it
> could force fuel past the clamps on the hose between a clogged filter and
> the pump outlet...
> Get you a fresh filter before you bust that pump....The fuel filter
> change
> is normal maintenance on vehicles...Even if that is not the specific cause
> of your weeping hose and noisy pump...you won't be wasting the money for a
> filter swap.
> Don Hanson
>
>
> On Fri, Jun 4, 2010 at 3:32 PM, most david <dmost@yahoo.com> wrote:
>
>> Hi. I've had some experience with noisy fuel pumps and dirty fuel
>> filters,
>> but I haven't seen this before, and I'm seeking advice from those with
>> more
>> wisdom.
>>
>> I hadn't started my van ('87 2.1) for a couple of weeks, and it took some
>> cranking to get it going (nothing terribly excessive, but the battery
>> tends
>> to be a bit weak after not using it for a few weeks). Actually it did
>> start
>> on the second or third try, and it idled just fine. However, after
>> around
>> 10 or 15 seconds, the fuel pump started to whine a lot louder than usual,
>> and the whining seem to come on rather gradually (by which I mean over a
>> few
>> seconds rather than in an instant).
>>
>> Idling continued to be fine, and I drove it for a few minutes, getting it
>> up to normal operating temperature. The whine persisted, so I looked
>> under
>> the van after turning the engine off. I then noticed that the exterior
>> of
>> the small (2 inch) hose between the outlet of the pump and inlet of the
>> filter was completely damp with fuel and that small drops of fuel were
>> forming around the clamps.
>>
>> So, here are my questions. I recognize that a fuel filter can get
>> clogged
>> to a point that will cause the pump to strain (and be noisy). Might this
>> happen all of a sudden (and possibly be related to the motor not being
>> started for a few weeks? And, can a clogged filter cause the pump to
>> push
>> fuel through the hose clamps to the exterior of the hose (because the
>> filter
>> is so clogged "all of a sudden")? What else might cause this single
>> little
>> hose to be soaked in fuel (i.e., everything else is dry)?
>>
>> Thanks!
>> David
>>
>>
>>
>>
>>
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