[Vwdiesel] Loss of power and rough running

ralph meyermann ralphmeyermann at gmail.com
Fri Apr 5 05:13:34 PDT 2013


I have had the tank out , blew out the lines and cleaned up the tank due
previous starvation issues. I then installed the in line diaphragm pump 4-7
rated psi. When it has no fuel to push or is building psi it knocks fairly
loudly. I may have to look into my Bentley for a return check valve?? I
would randomly do this after a few hours on the highway and its fairly
hilly around here. I do have a new tank and sending unit, waiting on the
opportunity to install them. From last summer I now have a paved surface to
work from rather than literally under the tree in the yard!

Velma 82 na diesel westy
On Apr 4, 2013 11:10 PM, <lbaird119 at aol.com> wrote:

>   Don't forget that clogging in the return line can screw things up just
> as well.  My 6.2 van sputtered to a stop a few times due to a stuck check
> ball on the pump outlet.  Slowly lost power until idle got so slow it died.
>     Loren
>
>
>  -----Original Message-----
> From: Bryan Belman <dieselwesty at yahoo.com>
> To: James Hansen <jhsg at sasktel.net>; 'ralph meyermann' <
> ralphmeyermann at gmail.com>; vwdiesel <vwdiesel at vwfans.com>
> Sent: Thu, Apr 4, 2013 7:43 pm
> Subject: Re: [Vwdiesel] Loss of power and rough running
>
> Prepair to get messy.
>  I agree, blow out your fuel lines, 	* Disconnect at the tank on right side
> outlet of tank, let it drain into a coffee can to be sure it is not plugged
> coming out of tank, a COMMON spot.  Rust build-up from 1982 tank.
> 	* If good, plug it,
> 	* dis-connect at the fuel filter, this will be a hard one, may want to heat the
> plastic first or cut.
> 	* blow out this section
> 	* Disconnect from the injection pump IN.
> 	* Then banjo bolt on fuel filter to injection pump IN.
> 	* disconnect from the OUT banjo bolt on pump.  Hard plastic again, heat first
> 	* Disconnect from the Inlet of fuel tank, on left side.  Plug tank after
> letting some pour out.
> 	* injection pump BACK to the fuel tank.
> Section by section, it could not be any easier of a fuel system.  Really.
>
>
> ________________________________
> From: James Hansen <jhsg at sasktel.net>
> To: 'ralph meyermann' <ralphmeyermann at gmail.com>; vwdiesel at vwfans.com
> Sent: Thursday, April 4, 2013 8:28 PM
> Subject: Re: [Vwdiesel] Loss of power and rough running
>
> Plugged fuel tank vent?  You say 4-7psi is that rated pump operating
> pressure, or measured when this is happening?
> Sounds very much like fuel starvation.  Could also be a piece of crud in a
> line, such as some grass, chaff, fuzz, etc.
> I had a combine that ran like this, it was two pieces of straw in a fuel
> line, that were caught at an elbow.  Took quite a while for them to joggle
> around just right, then it would plug.  Take away suction, it settled down,
> restart, and repeat.
> -james
>
> -----Original Message-----
> From: vwdiesel-bounces at vwfans.com [mailto:vwdiesel-bounces at vwfans.com <vwdiesel-bounces at vwfans.com?>] On
> Behalf Of ralph meyermann
> Sent: April-04-13 1:30 PM
> To: vwdiesel at vwfans.com
> Subject: [Vwdiesel] Loss of power and rough running
>
> Hi all! I was wondering why after 2-3 hours of driving  I seem to loose
> power and it starts to run rough at idle and tries to die on me? I have put
> an inline fuel pump before the fuel filter that runs 4-7 psi. Thanks for any
> help/advice!
> Velma 82 na diesel westy
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>
> Bryan Belman, Pt. Pleasant, NJ
> 04 Jetta Wagon TDI PD, 100hp, 5sp -- running :<)
> 04 Golf TDI PD, 100hp, 5sp Tiptronic Auto -- running :<)
> 82 Diesel Westy 1.9NA -- running :<)
> 70 Type 1 stock Elm Green Beetle -- Under Restoration :-)
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