Date: Wed, 4 Jun 2014 07:47:56 -0500
Reply-To: Abel Longoria <houstonphotog@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Abel Longoria <houstonphotog@GMAIL.COM>
Subject: Re: Fuel pressure regulator/hesitation off idle
In-Reply-To: <CACrM94Ju5d6u8=R=5JMDAkGL3sz8uCrhxqMc5EgPo7OnQ8vG=g@mail.gmail.com>
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reading on van-cafe about fuel pressure regulators...
1. Fuel pressure regulator - Very uncommon but we have run into this one
a couple of times. A blown fuel pressure regulator will result in the fuel
pressure jumping from in the 40 lbs of pressure range to 100+ lbs of
pressure. Van will run extremely rich. Tested with a fuel pressure gauge
connected off the fuel line T near the oil breather tower.
http://www.van-cafe.com/home/van/page_9_9/vanagon-running-problems.html
This makes sense... It's like mine is VERY boggy... may be just way too
rich at take off and thats the hesitation. Sounds like your issue as
well...
I wonder if replacing this item might help...
http://www.van-cafe.com/home/van/page_498_302/fuel-pressure-regulator-p498.html
Off to do some more digging...
Abel.
On Wed, Jun 4, 2014 at 7:40 AM, Abel Longoria <houstonphotog@gmail.com>
wrote:
> Im having a VERY similar issue with my 87 Westy Automatic. I was thinking
> it was bad fuel at first and now I'm thinking the fuel filter needs
> changing. I am very curious to see which hose it is thats disconnected on
> yours to see if that helps with mine! hehe.
>
> Thanks.... I'll be keeping an eye out for a resolution as Im sure others
> have had the same problems.
>
> Abel.
>
>
>
> On Wed, Jun 4, 2014 at 6:57 AM, Robert Clemmer <n51219@comcast.net> wrote:
>
>> Ok, to riddle me this. A month ago I was preparing for another 1,200 mile
>> trip to SW FL and giving the car a "once over". I'm poking around the
>> engine and I find the vacuum hose to the fuel pressure regulator
>> disconnected. How long it was disconnected, I'll never know. I look
>> around
>> and push it back on a nipple on the bottom of the intake manifold. Almost
>> immediately I notice the car hesitates/stumbles for about 2-3 seconds when
>> coming off idle. That's a long time when pulling out into traffic from a
>> stop sign. It almost like the old carbureted days when the accelerator
>> pump
>> didn't work and it went lean after the throttle was opened until the jets
>> caught up the drop in vacuum. Once going it drives normal in every way.
>> Nothing has changed. Fuel mileage is that same as it has ever been.
>> Three
>> weeks later, I have enough of this and I disconnected the vacuum line and
>> drivability goes back to normal.
>>
>>
>>
>> Any ideas as to what is going on here? Is there any long term harm to
>> leaving this vacuum line off? Car is a young 91 2.1 wbx automatic.
>>
>>
>>
>> BobC
>>
>> Perkasie, PA
>>
>
>
