We have a 97 Diamante LS with 3.5L V6. Engine does not want to start on hot soak condition. Checked fuel pressure and is fine when car is cranking normally. However when condition exists, fuel pressure will vary rapidly from 20 psi up to 60 psi. When cracking fuel lines during condition, appears to be alot of vapor ejecting from fuel lines. Have tried starting fluid during condition, still no-start. Have checked spark, spark seems fine on all cylinders. Problem started after mechanic removed upper plenum to replace spark plugs.
- posted
17 years ago