Date: Mon, 28 Sep 2009 12:28:46 -0500
Reply-To: Michael Sullivan <sandwichhead@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Michael Sullivan <sandwichhead@GMAIL.COM>
Subject: Re: No injector spray pattern
In-Reply-To: <989ea5a20909280958s13b5edd8qa83974c074b72eb5@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
TJ...Someone told me to wiggle the hallsender while someone else cranks it
and see if you get a spark from the coil wire on the dist cap. If the
sender is going out, you will get a weak spark. That was my prob and all
good now. Try it. Then if it works, tell Scott Foss THANKS. Good luck.
Michael in San Antonio
91GL AT 'Gringo'
73 Beetle
On Mon, Sep 28, 2009 at 11:58 AM, TJ Hemrick <x53gunner@gmail.com> wrote:
> Rocket,
> I realize it was discussed previously, in fact, it was less than a week
> ago. Previously, it was unknown why the van was not running as it had
> fuel,
> spark, air. Turns out, fuel stopped at the injectors. I should have
> figured that out sooner but I was pretty frustrated and started playing
> "swap-tronics" instead of troubleshooting. Now that we cracked that nut, I
> pulled both banks of injectors and I do NOT have a spray pattern. They're
> BONE dry. THAT is the problem. I should have started at the Injectors and
> worked backwards from there but I assumed (incorrectly) it was the
> pump/filter. Well, we all know what happens when we "assume" so I bear the
> responsibility on that one. I already payed the price in extra work so my
> dues are done. As per Ken Wilford, I'm going to swap the distributor and
> see if the hall sensor is the issue since it's the trigger for the ECU.
> Not
> much else to check as I've been through every ground and connection in the
> back end of that van, all the fuses, relays, and anything else I could
> unhook, clean, and reconnect. On top of that, I've already replaced the
> fuel pump, ECU, and filter as a double check. Why, at this point, the
> injectors are dry is the issue.
>
> TJ
>
> Date: Mon, 28 Sep 2009 06:40:16 -0700
> From: Rocket J Squirrel <camping.elliott@GMAIL.COM>
> Subject: Re: Fuel injection trouble
> What Mike S said. The pulses that drive the injectors are too brief for
> your basic meter to capture and display. You'd need a fancier "peak hold"
> meter or oscilloscope to properly measure them.
> What you're seeing suggests that the injectors are being driven, confirm
> by checking for spray, as Mike S suggests. The subject was discussed here
> less than a week ago, and some procedural and safety tips were mentioned.
> --
> Mike "Rocket J Squirrel" Elliott
> 84 Westfalia: Mellow Yellow ("The Electrical Banana")
> 74 Westrailia: (Ladybug Trailer company, San Juan Capistrano, Calif.)
> Bend, OR
> KG6RCR
>
>
> Date: Mon, 28 Sep 2009 09:11:43 -0400
> From: Mike S <mikes@FLATSURFACE.COM>
> Subject: Re: Fuel injection trouble
> At 08:24 AM 9/28/2009, TJ Hemrick wrote...
> > I'm not getting any fuel out of the injectors but definitely have
> > good
> >clean fuel in the lines. I had some help and found the injectors were
> >getting voltage but it's incredibly low. It peaks at 4 volts and
> >within two
> >revolutions, it holds at 2-3 volts max.
> If you're just using a simple multimeter to measure the voltage, that
> sounds correct. The injectors are pulsed, so even if they get full
> voltage when pulsed on, the meter will average the voltage down. You
> would need an oscilloscope to see the actual drive voltage.
> Pull the injectors on one side, and check the spray pattern.
> ------------------------------
>
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