Date:         Mon, 28 Sep 2009 06:40:16 -0700
Reply-To:     Rocket J Squirrel <camping.elliott@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Rocket J Squirrel <camping.elliott@GMAIL.COM>
Subject:      Re: Fuel injection trouble
In-Reply-To:  <20090928131737.1BF661165C3@hamburg.alientech.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

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



On 9/28/2009 6:11 AM Mike S wrote:

> 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.
>