My first thought: fuel pressure regulator. Remove the vacuum hose,
suck on it and see if the diaphragm is broken. Checking fuel pressure
would help too. Or......

Temp II sender bad or wires/connector dirty broken w.h.y.

Also, check all electrical connections for engine. i.e. to AFM.

Neil.

On Fri, Aug 9, 2013 at 4:42 AM, Bob Anderson
<ROBERTANDERSON294@comcast.net> wrote:
> Hi,
> I have a question regarding my 2.1 engine running rich when first started and then seems to smooth out when warmed after about 10 minutes, however yesterday , after I had driven home from work, about 5 miles, I turned the key off and then restarted the engine and it started running rough again, a little exhaust smoke and that exhaust odor of running rich, and then stalled.
> I just installed this engine a few weeks ago after a winter project of replacing the head gaskets and I now have just over 200 miles on it from short trips back and forth to work. This engine is new to me, as I bought it from someone last year who did a conversion.
> Your suggestions and advice is much appreciated.
> Thanks,
> Bob Anderson
> '86 Vanagon GL
> Wilmington, MA

-- 
Neil n

Blog: tubaneil.blogspot.ca

'88 Westy http://tinyurl.com/c8rlw6p

'81 VanaJetta 2.0 "Jaco"  http://tubaneil.googlepages.com/

Vanagon VAG Gas inline-VR Engine Swap Group:

http://tinyurl.com/d7gd5ej