|
Your post is totally appropriate for these help forums. You've done a lot of the obvious stuff, possibly even a bit too much if you were able to do a more detailed diagnosis.
Questions:
-Does it take a lot of extra cranking to get an overnight cold start to catch and start running rough?
-Does your engine have a cold start injector on the intake manifold? A leaking cold start injector can relate to such overnight cold start flooding and running problems. This strikes me as a very likely candidate if you've replaced the other injectors and still have pressure loss at the fuel rail overnight with a new and presumably okay pressure regulator.
You've done a lot on the fuel side, so time to think of the ignition side.
-Did you pull and read the spark plugs? Fouled plugs can take a few moments to burn off when oil or gas soaked. If black, carboned then new plugs may be warranted. If not evenly colored then a compression check may be warranted.
-When was the last time the ignition wires or distributor/rotor were replaced? Fouled, worn, damp, poor contact of the ignition wires and connectors can take a few moments to regain enough electrical conductivity for a good spark. I've had rough starting and stumbling for just such reasons.
--
Dave -still with 940's, prev 740/240/140/120 You'd think I'd have learned by now
|
