have 2 problems,,,,,
--occured 2 0f 4 times,,,simultaneously---
1- both times has gas trail during downhil- reverse from garage,,looks like puddle under F.P. Regulator-----I replaced regulator and all fuel lines w/ hi-pressure 1 year ago......
2- smoke at cold start,,heavy- light color,,,,,sounds like missing and loaded-up----I run at 2500 r til smoke eventually stops (at temerature) then runs like normal.
""MAY BE OX SENSOR , parts guy""
---have new F.P.Regulator ordered-------is there something i may be missing???

Thanks,
Jim

 

fuel pusation dampner will leak @ same location as FPR check that. I just changed my hommies FPD and he had the same problems as you....ie smoke, and loaded up after it sat. Try that first IMO also might want to check to see if the sparkplugs look fouled. If the plugs all look close to the same then the injectors are ok,but if the plugs from one of the rotors looks like massive carbon you might have a leaky injector in that rotor hope this helps ya.