Date: Sat, 7 Dec 2013 13:47:46 -0500
Reply-To: Steve Cotsford <cotsford@AOL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Steve Cotsford <cotsford@AOL.COM>
Subject: Re: making a little headway but need advice
In-Reply-To: <CAB2RwfhJVyAig4b2FYfBixnN+8-0=7jmA7fLMWF1_NNwe=2zhw@mail.gmail.com>
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Thanks Neil. I will try this valuable information.
It sounds like the Hall effect switch in the distributor controls the timing of the injector firing, not just the spark plugs and mechanically disengaging the distributor from its drive allows you to turn it while engine is stationary...thanks, that is very helpful. Logically, shorting across the fuel pump relay will give me active fuel pressure to watch the injector outputs while turning the dizzie. If the 2 on the left bank are firing as I think they are, then the 2 on the right hand bank should fire at the same time and if they don't then logically they are plugged up or something is amiss in the wiring which I think is doubtful. Is there a diy way to unplug them?
Cheers, Steve
On Dec 7, 2013, at 1:12 PM, Neil N wrote:
> Bentley should show values for injector wire resistance (total and at
> each plug IIRC). It should also show a voltage value at each injector
> plug.
>
> There is a method for checking fuel spray that's useful if you're
> working on your own. If you search Mark Drillocks email address it
> should come up in the archives here:
> http://gerry.vanagon.com/cgi-bin/wa.exe?S1=vanagon
>
> Basically, you lift the dist. up so it's dis-engaged from gear and
> with ign. on, turn the rotor by hand while watching the removed
> injectors. The hall in distributor should signal the ECU to cause the
> injectors to spray. (this is a batch fire system; they should all
> spray at once)
>
> Here's a link to a large-ish pdf file of the Vanagon Digifant pro
> training manual. If your Bentley is the latest edition, it may contain
> same, but this is easy to download and print out and handy to carry in
> the van:
>
> http://www.cabby-info.com/Files/ProTrainingManual-Digifant.pdf
>
> Neil.
>
>
>
> On 12/7/13, Steve Cotsford <cotsford@aol.com> wrote:
>
>
>
>> ! Is there any advice on how I can check that the injectors are not
>> plugged and that they are getting a signal to activate them? Should I
>> just drive to a dealer or mechanic and have the injectors pressure tested by
>> people who know what they are doing? Can I use my Fluke meter to
>> determine that the injectors are getting a correct firing signal? at the
>> right time? How does the ECU know when to fire the injectors?
>>
>
>> 3 Any thing else that I should do? Electrical tests. Mechanical
>> tests. Stuff that all Vanagon Digifant owners should know to do ??
>
> --
> Neil n
>
> Blog: tubaneil.blogspot.ca
>
> '88 Westy http://tinyurl.com/c8rlw6p
>
> '81 VanaJetta 2.0 "Jaco" http://tubaneil.googlepages.com/
>
> Vanagon VAG *Gas* inline-VR Engine Swap Group:
>
> http://tinyurl.com/d7gd5ej
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