[T3] missing on cylinders #2 & #3 FI 72 Fastback

[Dave Hall]

Is the fouling black sooty or black oily?   

I'd check the resistance of the leads first - with the plug cap original
Bosch leads should be around 1 KOhm (1000 Ohms) and reasonably similar for
all 4.  Look in the dark for sparking between leads and the engine.  Has the
weather changed to damp meanwhile?  

You could try a timing light on the leads to see if there's a problem
elsewhere.  There might be a crack or track between 2 and 3 in the
distributor cap.  A new cap (or even an old one if you have one) might prove
where the problem is.

Dave.
UK VW Type 3&4 Club
===================

-----Original Message-----
From: type3-vwtype3.org-bounces at lists.vwtype3.org
[mailto:type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of Vern
Creamer
Sent: 10 January 2012 22:05
To: type3 at vwtype3.org
Subject: [T3] missing on cylinders #2 & #3 FI 72 Fastback

Newbie lurker joining the fray.  I have already learned a lot from this
group.

Had the engine out last week for clutch repair; installed new spark plugs
while the engine was out.  Ran terrifically for the first 100 miles or so,
smoother than ever.  Over the last 50 miles, it's been missing as I rev up
each gear; sometimes, it gets somewhat smoother once I get over 50 or so.

So far, I've replaced the (brand new) spark plugs ... #1 & #4 looked
perfect; #2 & #3 are fouled black ... all of this after just 150 miles.
When running, all 4 plug wires spark when loose but held close to the
distributor.  When I back #1 & #4 away, the engine begins to stall; when I
back #2 & #3 away, there is no change to the engine.

The next thing I'll check are the plug wires; after that, not sure which
direction to go.  Suggestions?

Vern Creamer
Omaha, NE



_______________________________________________
VWType3.Org mailing list - type3 at vwtype3.org
http://lists.vwtype3.org/listinfo.cgi/type3-vwtype3.org
Contact gregm at vwtype3.org if you need help with the list.