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Date:         Tue, 23 Jul 2013 13:33:53 -0400
Reply-To:     Project Pat <psdooley@VERIZON.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Project Pat <psdooley@VERIZON.NET>
Subject:      Re: Vanagon fuel injector cleaning
Comments: To: Stuart Fedak <ve3smf@YAHOO.COM>
In-Reply-To:  <FB7E8BDF-21C8-4665-8A81-D54A410E4299@yahoo.com>
Content-type: text/plain; charset=US-ASCII

The injectors get 12 volts. My concern is the duty cycle though. The voltage is pulsed, not continuous. The Vanagon injectors may be robust enough to take continuous voltage for a few seconds, but I'm not sure. I suppose the momentary switch and a fast finger would suffice.

I have checked injector patterns by simply plugging a spare test harness to the injectors and tapping the positive wire on the battery terminal. This is done off the vehicle with the injectors plugged into a spare intake manifold and fed fuel pressure. I haven't killed any injectors yet, but YMMV.

I really like the idea of back flushing the injectors. That should really help clear debris as opposed to trying to push it through.

-----Original Message----- From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Stuart Fedak Sent: Tuesday, July 23, 2013 10:54 AM To: vanagon@GERRY.VANAGON.COM Subject: Vanagon fuel injector cleaning

I am in the process of replacing the engine fuel lines in my 86 Vanagon 2.1 GL. Any recommendations on what process should be used for cleaning the fuel injectors once they are removed.

I did a quick search on YouTube and did find some videos that show the use of a 12 VDC wall wart transformer, a momentary switch, and a syringe/hose that is used to hold brake cleaner fluid. The process that was demonstrated showed forward and reverse cleaning of the fuel injectors. Is this a recommended process.

Is there any polarity concerns with the fuel injectors, and is 12 VDC acceptable? One video showed the use of just a 1.5 VDC battery. What is the usual voltage used to feed the injectors?

Cheers! Stuart

Sent from my electronic umbilicus


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