Mark,

I agree with your diagnosis of vapor lock. A few people in Arizona with
air-cooled Buses have told me the same thing.

Ryan

On Thu, Jun 20, 2019 at 12:21 PM Mark Belanger <mbelanger@gmail.com> wrote:

> Ryan,
>
> That sounds an awful lot like vapor lock. You need to remove the hose just
> before the fuel injection rail (or carb) and suck on it until fuel is
> flowing again. I had to do that on a '78 Jeep CJ in the middle of nowhere
> and I thought I was going to die, but we got moving again.
>
>
> -MB
>
> On Thu, Jun 20, 2019 at 11:47 AM Ryan Cresawn <jrcresawn@gmail.com> wrote:
>
>> In early August 2017 I drove my 2.1 liter 1991 Vanagon into Roswell, New
>> Mexico and the engine stalled at a stoplight while at idle. There were no
>> problems during the prior 1,700 miles of the trip. It was hot on that day
>> in Roswell. The Vanagon sat on fresh asphalt and the ambient air
>> temperature was around 100 F degrees. I'm sure the road surface was hotter
>> than the air temperature due to the clear sky and bright, late-afternoon
>> sun.
>>
>> After the engine stalled I was not able to start it and my brother and two
>> police offers pushed the Vanagon to a parallel parking space on a side
>> road
>> near the courthouse. My brother and I began some simple diagnostic work
>> and
>> weren't able to determine what caused the stall. After about 45 minutes I
>> started the engine and it ran perfectly for the rest of the drive to
>> Tucson, Arizona. I never determined with certainty what caused the stall
>> that day.
>>
>> About 6 weeks later in mid-September in Tucson, the engine stalled again.
>> The solution was again to wait about 30-45 minutes and then the Vanagon
>> was
>> ready to drive. My conclusion about these two stall events was that they
>> were caused by excessive heat and possible fuel starvation. My fuel pump
>> was a Bosch. My fuel filter was about 2-months old. I decided to research
>> fuel pump options with a focus on temperature operating range.
>>
>> I could never find the temperature operating range rating for the Bosch so
>> I replaced it with one made by Delphi. I chose it because of this claim
>> from the manufacturer: "Rigorous OE-testing ensures the pump can withstand
>> extreme temperatures ranging from -25 to 150F". The Delphi fuel pump has a
>> foam sleeve which I assume is designed to insulate the fuel pump and slow
>> temperature changes within the pump. I also replaced the 2-month-old fuel
>> filter. This is the fuel pump:
>>
>> https://www.rockauto.com/en/moreinfo.php?pk=1111641&cc=1286614&jsn=1
>>
>> Here is a link to a photo of the Bosch and Delphi pumps. Note the diameter
>> difference and wiring connector differences.
>>
>> https://photos.app.goo.gl/m5qyHGsqST6xjrBv5
>>
>> What I don't like about this pump is that the wire connectors for the
>> Bosch
>> fuel pump must be replaced with a different style to fit the Delphi fuel
>> pump. Also the Delphi is slightly longer and requires new fuel hoses that
>> will accommodate the pump's different position in the fuel pump mounting
>> strap. But what I like about the Delphi fuel pump is that it has not
>> failed
>> me in nearly 2 years here in the Southwest on several trips in
>> temperatures
>> over 100 F degrees. Prior to buying the Delphi I searched the Vanagon
>> mailing list, but I couldn't find any opinions on the Delphi fuel pump. I
>> knew I was taking a chance on it, and so far I'm happy with my choice.
>>
>> Ryan
>> 1991 Vanagon GL Westfalia Camper
>> Tucson, Arizona
>>
>>
>> On Wed, Jun 19, 2019 at 9:30 PM OlRivrRat <OlRivrRat@comcast.net> wrote:
>>
>> >                 Steve
>> >
>> >         This is the Fuel Pump I have been running with on my 90Westy for
>> > 8Yrs
>> >
>> > & 66000Mi's & it shows no signs of giving up yet ~
>> >
>> > https://tinyurl.com/y4ou2cfz
>> >
>> >
>> >
>> >
>> >
>> >
>> https://www.amazon.com/Bosch-69100-Original-Equipment-Replacement/dp/B000BZIC90/ref=au_as_r?_encoding=UTF8&Make=Volkswagen%7C74&Model=Vanagon%7C963&Year=1990%7C1990&ie=UTF8&n=15684181&s=automotive&vehicleId=3&vehicleType=automotive
>> >
>> >
>> > On 19 Jun , 2019, at 8:51 AM, Steve Williams wrote:
>> >
>> > > I'm curious about the Pierburg brand fuel pump on the Bus Depot web
>> site:
>> > >
>> > > http://www.busdepot.com/251906091
>> > >
>> > > I had a problem with fuel delivery last year, so I'm certainly willing
>> > > to pay a bit more for an important component like the fuel pump.
>> Maybe
>> > > Ron Salmon will comment on that selection.
>> > >
>> > > Here are prices I see this morning:
>> > >
>> > > Bus Depot Pierburg: $219.95
>> > >
>> > > GoWesty Aftermarket: $52.45
>> > >
>> > > GoWesty Bosch: $122.45
>> > >
>> > > Van Cafe/RWM Bosch: $149.95
>> > >
>> > > Honestly, I enjoy paying more for peace of mind, on the advice of
>> people
>> > > I trust.  And I trust Ron, having gotten some good support from Bus
>> > > Depot last year.  So is it worth the extra money?  My Bosch fuel pump
>> is
>> > > working fine now, but I like to travel with a spare.
>> > >
>> > > https://sbw.org/sbwsty/
>> >
>> >
>>
>
>
> --
> ________________________________________________________________________
> Mark Belanger - mbelanger@gmail.com
>