Date: Fri, 31 Jan 2003 22:57:21 -0500
Reply-To: EMZ <vw4x4@FYI.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: EMZ <vw4x4@FYI.NET>
Subject: Re: diesel-gas conversion problems solved! (mostly)
In-Reply-To: <064b01c2c990$3ef655c0$bc0e4ed8@volksfix>
Content-Type: TEXT/PLAIN; charset=US-ASCII
I have a Vanagon with an inline 4 cyl. running a CIS fuel system.
The Vanagon pump puts out plenty of pressure. As for a check valve
you "may" need it. What I found is the system bleads the pressure
down to zero the minute it is turned off. The problem becomes
when you let the vehicle sit. Restarting in a day or so, no problem.
After a few days of sitting enough fuel has drained back to the tank
enough that it will not start until it has been cranked for maybe
20 seconds.
Eric 86-VW4x4
vw4x4@fyi.net 86-SS Syncro
Pittsburgh, PA USA 1936-Chrysler
92-Jetta GWC
www.fyi.net/~vw4x4/vw4x4.htm
On Fri, 31 Jan 2003, Open Wheel Racing wrote:
> Hi Matt,
>
> The Vanagon pump wont work with a CIS system, not enough pressure. You
> will have to spring for a CIS pump, as it will put out the required 75 to 90
> lb's of working pressure. You will also need the accumulator, as well as all
> the parts on the engine, control pressure regulator, auxiliary air
> regulator, cold start valve, thermal time switch, etc, for the system.
> Sounds like you need a donor Rabbit or maybe a Jetta, etc to rob all the
> parts from. Also you will need to know if the fuel system has a "Lambda" (
> 02 sensor) system or not, and match all the parts to the same. Look in a
> Bentley there is a good picture of the system.
> Good luck, let us know how it runs. I did this to my 82 "EX" Diesel
> Camper, I love it!!!!!
>
> Regards
>
> Howard
> ----- Original Message -----
> From: "Matt Ratto" <mratto@UCSD.EDU>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Friday, January 31, 2003 6:29 PM
> Subject: diesel-gas conversion problems solved! (mostly)
>
>
> > never mind. I went out today, retorqued, drove it, retorqued again. Seems
> to
> > be fine. No leak. Now to figure out my system pressure problem.
> >
> > If anyone is reading these emails any more, I do have a question for those
> > of you who have done this conversion.
> >
> > What system pressures did you find with a CIS system and a vanagon fuel
> > pump? Is there residual pressure? Mine drops immediately to zero when I
> shut
> > off the engine. Is there a fuel pump check valve like on the A2's?
> >
> > Got it into third today - lots of power!
> >
> > Matt
> > ----- Original Message -----
> > From: "Matt Ratto" <mratto@ucsd.edu>
> > To: "Vanagon Mailing List" <vanagon@gerry.vanagon.com>
> > Sent: Thursday, January 30, 2003 10:27 PM
> > Subject: diesel-gas conversion problems solved! (mostly)
> >
> >
> > > I tracked down a vacuum leak on my diesel-gas conversion today - bad
> > intake
> > > manifold gasket. I put a new one in, torqued the bolts to spec., and
> went
> > > for a drive. About half way around the block, another leak started up
> > again.
> > > I haven't pulled the manifold to check if its blown again, but I suspect
> > it
> > > has.
> > >
> > > I'm thinking it could be a couple of things; 1) I didn't retorque the
> > > manifold bolts after warming up the vehicle, 2) I damaged the gasket
> > during
> > > installation, 3) the manifold itself is slightly warped, or 4) aliens.
> > >
> > > If it is warped, any suggestions? Do people use RTV or some such with a
> > > gasket? If anyone has a procedure for doing intake manifold gaskets on
> an
> > > I4, I'd be happy to hear it. As you can tell, I'm making this stuff up
> as
> > I
> > > go...
> > >
> > > Matt
> > >
> > >
>
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