finding idle

[terrapin@halifax.com]

For background I have a 1978 fuel injected scirocco bone stock that has had 
afuel problem for several months now.
It finally got to the point where it would only fire and die and never run.
Before that it would act, when cold, like it was starving for gas, then 
suddenly begin running right.
When hot,it was always a crap shoot whether it would crank back up.
We have replaced the distributer, fuel pressure regulator at thefront of the 
engine, all injector seals, the valve at the fuel pump and other niggling 
things.
We now have it so it fires first time and runs, runs well, plentyof power, 150 
across all four on a compression test, but after five to then, sometimes 15, 
the thing decides it doesn't want to run anymore and dies.
It will then refuse to run unless the idle is set above 1500.
Any suggestions, ideas, solutions.
I'm ready to go with a carb, but my mechanic feels he can find the problem.
We are also pretty sure there is no air leak in the system.
Once we solve this problem, we think we will have the whole fuel problem licked.
Thanks
David Conner
terrapin@halifax.com


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