Date: Tue, 5 Jun 2012 10:07:17 -0700
Reply-To: neil n <musomuso@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: neil n <musomuso@GMAIL.COM>
Subject: Re: 1985 1.9 Hesitation at higher RPM (kind of long)
In-Reply-To: <CA+Spi21bjaa=ypT=NuThkbxOhsywnDa1iEv+w4r36PN-1SRAqg@mail.gmail.com>
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Your fuel pump may have a filter mesh at the inlet. I have seen this on two
different pumps.
I think this one's from an '85
https://lh6.googleusercontent.com/-7cbiND1gKBs/SudRMYAFPyI/AAAAAAAAB3U/FR_KgCRejxs/s640/FuelPumpInlet%252785.jpg
This pump may have a filter. Think it's from my '81:
https://lh3.googleusercontent.com/-RQZ448jcxtE/SudQjyZgK4I/AAAAAAAAB3Q/Ywdi8-d3plQ/s576/FuelPumpInlet%252785%253A2.jpg
@ all. Can this filter be backflushed with gas to clear it?
Jeff. Any chance debris from old tank clogged the fuel pump filter or
recently replaced fuel filter?
Also, as an aside, where was the water getting in? Did water get in if van
parked on level ground or grade, or did this make a difference?
If expansion tank nipple is broken, threading a brake bleeder valve into
the hole might suffice. Seal it with whatever is appropriate. On my air
cooled Westy, found that this had been done, but w/o any sealant and it was
clogged:
http://sites.google.com/site/tubaneil2/expansiontank
Back then, thought it was a hack fix. Maybe not. While cleaning up
basement, found the tank with broken nipple. Cut off end of a brake bleeder
screw (bigger hole), cleaned parts, threaded in screw, sealed with Goop. An
experiment. In a rollover situation, I don't know if:
a. fuel would seep out between bleeder screw threads and plastic
b. if fuel would adversely affect the Goop
Thanks
Neil.
On Tue, Jun 5, 2012 at 9:41 AM, Jeff Lincoln <magikvw@gmail.com> wrote:
> Starting from the beginning - I was having problems with getting water in
> my gas tank. I am certain I have resolved that but today I had another
> issue - Before I explain the issue see the details:
>
> 1. New Fuel Tank
> 2. All new tank grommets, clamps, and hoses
> 3. Had to by bass the Pass side expansion tank (because it was broken) - so
> tank is venting only to the driver's side expansion tank
>
> It has been running fine since the new tank was installed - I am on about
> my 4th or 5th tank of gas since then.
>
> The problem seems to have started since I ran it out of gas.
>
> The problem I am having is that at higher RPM's I can feel a hesitating and
> a loss of power when I give it more than half accelerator (by higher RPM's
> I mean around 3k). The problem is most noticeable in 3rd and 4th gear. So
> for example I was able to get up to 50mph (in 4th obviously) this morning
> but it took some time before I was able to coax it up to 55mph - because if
> I gave it any more accelerator the hesitation starts. It feels like it's
> fuel starved when it does this.
>
> It feels like it did when I was getting water in the gas (only much less
> severe). There is NO way I am getting water in there now. So what might be
> going on? Can vapor lock act this way - did something happen when I ran out
> of gas? It can't be rust or other debris in the gas the tank is NEW.
>
> I did not replace the fuel filter but that is fairly new (switched to the
> later model Canister filter post pump). Fuel pump is quiet.
>
>
--
Neil n
65 kb image Myford Ready For Assembly http://tinyurl.com/64sx4rp
'88 Slate Blue Westy to be named.
'81 VanaJetta 2.0 "Jaco" http://tubaneil.googlepages.com/
Vanagon VAG Gas I4/VR Swap Google Group:
http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines
