Date: Fri, 28 May 2010 05:47:23 -0400
Reply-To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject: Re: Digifant timing/tuning help needed
In-Reply-To: <0L3400EY30T9B907@vms173019.mailsrvcs.net>
Content-Type: text/plain; charset="US-ASCII"
I goofed! I responded to the "1.9".
Dennis
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
pdooley
Sent: Thursday, May 27, 2010 11:10 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Digifant timing/tuning help needed
?????
I thought digifant controlled spark.
Certainly does on Golf/Jetta.
This pic doesn't show a vacuum canister thingamabob either.
http://tinyurl.com/338wgwq]
must be a Canadian thing eh?
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Dennis Haynes
Sent: Thursday, May 27, 2010 10:15 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Digifant timing/tuning help needed
On the Digifant, the ECU has absolutely nothing to do with spark advance.
Problem is in the distributor. The distributor has mechanical (centrifugal),
advance, and vacuum advance and retard.
Dennis
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Greg Potts
Sent: Thursday, May 27, 2010 5:36 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Digifant timing/tuning help needed
Hi Volks,
My 1.9L digifant engine has been sluggish ever since I put it into the
bus back in September. It doesn't seem to make much power unless I wind
it out to 2.5K rpm or so. Fuel economy is nothing great either; I am
only getting 14MPG on a typical tank.
Compression is good. (Around 150 on all 4 cylinders last time I checked)
Distributor is only 1 year old, as are wires, cap, rotor and plugs. If I
pull a plug wire off the distributor the idle staggers no matter which
plug wire I remove (ie, no weak link).
Coolant temp sensor was replaced, it didn't help. O2 sensor is
disconnected until I get a new one; It's pretty much undriveable with
the O2 sensor connected. Throttle position sensor is working.
So tonight I checked the timing. 5 degrees BTDC at 2K RPM with coolant
sensor disconnected. It's spot on at 2K rpm but as the revs increase the
timing stays rock steady at 5 degrees BTDC.
According to http://www.oldvolkshome.com/ignition.htm the timing should
advance to 35 BTDC at 3K RPM....
I have tried swapping the ECU and AFM with good spare parts and it makes
no difference whatsoever.
Am I doing something wrong, is the ECU broken or am I reading more into
the oldvolkshome specs than I should?
Happy Trails,
Greg Potts
Toronto, Ontario Canada
197x Westfakia "Bob the Tomato"
1987 Wolfsburg Weekender Hardtop
www.pottsfamily.ca
BUSES OF THE CORN - AUGUST 13-15th, 2010
www.pottsfamily.ca\busesofthecorn