[T3] Bad day at the (FI) office

Keith Park topnotch at nycap.rr.com
Tue Mar 29 16:49:51 PDT 2016


Mufflers are VERY VERY different internally from one manufacturer to the
next, what you see in one location on one muffler you may not see in another
muffler but it was the suggestion of my T4 builder that the sensor is to be
mounted on the right end of the muffler, angled sensor head down to avoid
collecting moisture.  I found this to be good with the 3 mufflers Ive had
them on, both T2,3 and 4 german units.

KEith


Topnotch Restorations
topnotch at nycap.rr.com
http://www.a383ina68.addr.com/radiorest/main.htm
71 Squareback  "Hothe"
65 Notchback  "El Baja Rojo"
93 RX7  "Redstur"
87 Golf  "Winterat"
 

-----Original Message-----
From: type3-vwtype3.org [mailto:type3-vwtype3.org-bounces at lists.vwtype3.org]
On Behalf Of Daniel Nohejl
Sent: Tuesday, March 29, 2016 11:12 AM
To: type3 at vwtype3.org
Subject: Re: [T3] Bad day at the (FI) office

The heel and cam are lubricated. The points were Bosch and the condenser is
German Bosch. 

I've been told that there's no perfect location for the 02 sensor but I have
it in the same place as Phil does and he's having no trouble with his
readings as they're all in line with what one would expect. Of course he's
able to make 3 separate MPS adjustments while I can only make one. Either
way, here's the location

http://images.thesamba.com/vw/gallery/pix/1474563.jpg
<http://images.thesamba.com/vw/gallery/pix/1474563.jpg>

I'm aware that I'm probably in a state of paying too much attention to the
AFR gauge. At the same time, I'm still trying to fine tune this thing and
now it feels like we're finally getting somewhere. 


> On Mar 29, 2016, at 8:12 AM, Dave Hall <dave at hallvw.clara.co.uk> wrote:
> 
> Ignition on without the engine turning will either be powering the coil or
> not, depending on whether the points are open or closed. It won't have
done
> any harm to the points either way.  Is the heel and cam lubricated?  High
> performance ignition coils tend to produce more erosion of the points.
> 
> Keith says your sensor for AFR is not sited correctly (or is that someone
> else?) - seems to me if he's right you're placing too much reliance on its
> readings.  MPG over a decent distance must be a better guide.  Plug colour
> too will help, as will feel of the engine response.
> 
> My FI Fastback performance is very sensitive to timing, but it has the
twin
> vac advance (as does my twin carb Variant, but that doesn't seem so
> sensitive).  When it was hunting, I enrichened the MPS slightly, then
> reduced it again a few months later when a CO meter showed it was around
1%.
> It went back down to less than 0.5% and no hunting! 
> 
> Keep enjoying driving it, and let it grow old gracefully!
> 
> I used to worry about the sound of my 7-year-old Beetle engine 50 years
ago,
> so my parents bought me a Blaupunkt radio for my 21st birthday! A few
months
> later at 50,000 miles I had to have a new camshaft as two cam followers
had
> worn through to the oilway - expensive!  Ah, the joys of VW motoring back
> then, and I am still committed to them!
> 
> Dave
> UK VW Type 3&4 Club
> ===================
> 
> -----Original Message-----
> From: type3-vwtype3.org
[mailto:type3-vwtype3.org-bounces at lists.vwtype3.org]
> On Behalf Of Daniel Nohejl
> Sent: 29 March 2016 12:16
> To: type3 at vwtype3.org
> Subject: Re: [T3] Bad day at the (FI) office
> 
> snipped
> 
> Anyway, in general, things seem to be better. We went away over the
weekend
> and on the way out of town, we leaned out the MPS a wee bit closer towards
> its original position. Our highway cruise AFR is kind of lean..anywhere
from
> 14.5 to 16.5 but our MPG over the 260 miles was a modest 25.8. I imagine
if
> we were too lean, our MPG would have been much higher. 
> 
> Toward the end of the trip, I started noticing that the idle AFR went back
> to rich even though we hadn't touched it again and that the idle sounded
too
> high. When we got home, we took out the dwell meter and timing light.
First,
> the idle was at 1020 rpm so we brought it down to 850 but it was unstable
> and hunted slightly so we brought it up to around 900 which is where it
> seems happiest. We noted that the dwell had changed from 48* to 52* in
1600
> miles. I've never had that happen before. Also, the timing was a few
degrees
> advanced..closer to the second timing mark than the first. We tried to
reset
> the points but there was such a big tit on one side that it was hard to
get
> the feeler gauge through so we just put in new points and re-did the
timing.
> Once we did that, the idle AFR went from 11.5 to 13. Seems like the
advanced
> timing was messing up the MPS and the a/f mixture. 
> 
> I've yet to have a set of points go bad on me in only 1600 miles.
> Admittedly, I only have about 70,000 miles of VW driving under my belt but
> still..Part of me wonders if repeatedly having the key in the ignition in
> the on position while toggling the fuel pump prime switch hastened the
death
> of these points. Maybe I can power the switch from an always hot fuse and
> see what happens?
> 
> 
> _______________________________________________
> VWType3.Org mailing list - type3 at vwtype3.org To unsubscribe or change
> subscription options, visit:
> http://lists.vwtype3.org/listinfo.cgi/type3-vwtype3.org
> If you need more help, contact: gregm at vwtype3.org
> 
> 
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
> 
> _______________________________________________
> VWType3.Org mailing list - type3 at vwtype3.org
> To unsubscribe or change subscription options, visit:
> http://lists.vwtype3.org/listinfo.cgi/type3-vwtype3.org
> If you need more help, contact: gregm at vwtype3.org

-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.vwtype3.org/pipermail/type3-vwtype3.org/attachments/20160329/1
9c56843/attachment.htm>
_______________________________________________
VWType3.Org mailing list - type3 at vwtype3.org
To unsubscribe or change subscription options, visit:
http://lists.vwtype3.org/listinfo.cgi/type3-vwtype3.org
If you need more help, contact: gregm at vwtype3.org



More information about the type3-vwtype3.org mailing list