Date: Fri, 26 Sep 2003 00:27:22 +0000
Reply-To: kenwilfy@COMCAST.NET
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Kenneth Wilford <kenwilfy@COMCAST.NET>
Subject: Re: Cyl 1 and 3 not getting gas.
Is this the first time you are trying to run your new engine? I would check
compression on these two cylinders that you are having the problem with. My
guess is that they will have zero compression. The reason for this is that the
push rods that are not properly seated in the lifters. This is very easy to
mistakenly do (I know about this problem and still do this from time to time).
If the push rods are not properly centered in the lifter then they will hang
the valves open and cause zero compression. The solution is to remove the
rocker arm assembly on the side that you are fixing and reinstall the push rods
being sure to center them. Reinstall the rocker arm assembly. Then adjust the
valves to zero lash (just touching the ends of the valves).
It is probably not a fuel injection harness problem (just my experience again).
FYI the injectors are not individually pulsed. They are all pulsed at the same
time and that is why you can plug the wiring harness into any injector (if the
wires will reach) and it will not make a difference. You can test the actual
wiring by swapping the wiring on one side from one injector to the other. If
the non-fire follows the injector plug then you have a wiring problem, if it
doesn't then you have a different problem.
The only other thing that I can think of if you do have good compression is
that you have two bad injectors. This is possible, but most of the time these
fail by leaking, not by not opening (just my experience). Hope this helps you.
Thanks,
Ken Wilford
www.vanagain.com
John 3:16
--
Thanks,
Ken Wilford
John 3:16
http://www.vanagain.com
Phone: 856-327-4936
Fax: 856-327-2242
> Some of you might have read my posts about thinking I had timing problems
> on my new 1.9 in my '85 Vanagon.
>
> Upon furthur sleuthing, cyl 1 and 3 seem to not get any gas.
>
> If I pull the connectors going to either 1 or 3 FUEL INJECTORS when the
> motor is running, it keeps on going, If I do that to either 1 or 4, it
> dies !
>
> I've troubleshot as per the Digijet F.I. manual, metering on the ECU multi-
> pin connector, and all my injectors measure out to 18 ohms as per spec.
>
> However, what is REALLY odd is that the book states the following for the
> respective terminals to the ECU:
>
> 11 & 7 to cyl 2 Mine meters to cyl 4
> 12 & 7 to cyl 1 Mine meters to cyl 3
> 23 & 7 to cyl 4 Mine meters to cyl 1
> 24 & 7 to cyl 2 Mine meters to cyl 2
>
> And what is odd is that you cannot mistake the injector wires and their
> bundle to cyl 1 & 2 because they are longer and have to go ACROSS the
> engine. The respective wires to cyl 3 & 4 are only like 8" or so from the
> main cable bundle to the ecu !!
>
> I am getting spark to ALL 4 cyl.
>
> If I disconnect either plug 2 or 4 when the motor is running (Yes, your
> 1.9 WILL run on 1 cyl !) you can definatly smell the unburned gas in the
> exhaust and on the plug.
>
> If I do the same for plugs 1 and 3, nothing, no gas smell, nothing.
>
> Also plugs 1 and 3 are clean, out of the box clean, 2 & 4 are showing use.
>
> What's up ???
>
> Frustrated in Memphis !!!!
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