Date:         Sat, 11 Apr 1998 21:39:24 -0700
Reply-To:     Ray Hunnam <hunnam@PNC.COM.AU>
Sender:       Vanagon Mailing List <Vanagon@vanagon.com>
From:         Ray Hunnam <hunnam@PNC.COM.AU>
Organization: RAYJEN Security
Subject:      Re: Thick-Glasses & a lab coat, was: How Do U Clean Injectors?
Comments: To: GMBulley <GMBulley@AOL.COM>
Comments: cc: Vanagon@VANAGON.COM
Content-Type: text/plain; charset=us-ascii

Our Fuel Injector Wizkids have been using ultrasound waves on the injectors down
here.  Strip them off the Van and immerse them in a solution and run ultrasound
waves through the solution.  This breaks the carbon deposits off the tips and
porbably loosens the gum and gunk on the innards.  Then they flush them through
and you got it.

This is not an everyday occurrence and should only be required once every 40000
kms.  I have never used the injector cleaner products some swear by them,  others
wont have a bar of them.  Each to his own choice.

Ray

GMBulley wrote:

> In a message dated 98-04-09 23:11:46 EDT, BM2AM@AOL.COM writes:
>
> << Does anyone have any suggestion on how to clean fuel injectors that are out
> of the van?  >>
>
> I wouldn't try.
>
> Injectors are pretty sturdy, granted, but the needle and seat is a delicate
> mechanism.
>
> Further, unless you want to build a little rig with FI hoses, a pressure pump,
> a 6 volt (correct me?) power supply and some sort of switching mechanism that
> can cycle on and off in 1/120th of a second, it isn't worth the trouble. By
> the way...I think the Clymer manual for my 1971 Squareback had a picture of a
> thick-glassed dolt wearing a lab coat demonstrating just such a "fuel injector
> cleaning rig". Looked very official, and costly. I digress.
>
> The electromagnet that opens the needle valve (aledgedly) is not supposed to
> be subjected to a constant "open" current flow, gets too hot, and then you
> have to amputate your limbs...wait a minute, that was a differant
> thread...So...
>
> Instead, run a high quality Fuel injector cleaner through the fuel system once
> the injectors are back on the motor. I recommend Chevron Techron, around $8
> for a bottle of their top-o-the-line crud buster. There are others that work
> well, and it's fun to drive with this stuff in the tank. In my experience, you
> start feeling a difference in 15-20 miles. Instant gratification. :)