[T3] Diagnosis help for a badly running 1971 VW 411

Jim Adney jadney at vwtype3.org
Tue Aug 13 11:22:35 PDT 2019

On 13 Aug 2019 at 12:44, Jens Vagelpohl wrote:

> I have one picture of the engine compartment, the MPS is left of the
> engine. Maybe thatTMs helping to identify it. The parts numbers are
> different from the Type 3 numbers I found at the end of the Harold Glenn
> guide.
> https://www.type4.org/pictures/1971/engine.jpg

Hmmm, so this is a Type 4 fastback. Too bad. The only car that's harder to 
get your head into, to do engine maintenance and timing, is a 914. The 914 
may even be easier.

Yes, Type 4 FI parts are all different, and have different part numbers, from 
Type 3 FI parts.

Nice photo, but, unfortunately, that photo only shows the backside of the 
pressure sensor, so I can't see the cover. It turns out that I currently have a 
good '71 Type 4 AT pressure sensor up for sale on the samba. Yes, it has 
the diaphram, but I'd forgotten all about that. I couldn't remember what its 
orientation would be in the car, so I didn't know which way to install the 
cover. Now that I've seen the photo, I can do that correctly. If anyone's 
interested, here's a link to that sale.  


Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA

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