VW Digifont

[crankshaft at adelphia.net]

Hi,

Sorry to ask a non Audi question but I'm in a pickle. I have a 91
Vanagon with a 95 Jetta
2.0 with Digifont head and injection from a golf. I noticed that it has
alot less power 
lately and when cold is hard to start. If I step on the gas it will fire
right up. When
its warm it starts no problem. I also notice some hesitation during
acceleration and 
light pinging under load. I have replaced the fuel pressure regulator,
Coolant temp sensor,
and the fuel filter.  Fuel pump or knock sensor are what I'm thinking
but would like other
input from fellow shade tree mechanics. Thank you very much for your
time!


Regards,
Aaron