Ken,
To reiterate my previ
Ken,
To reiterate my previous post concerning CIS problems. If the problem is there today, or not is immaterial to the solution. Focusing on the hot start problem, first.
1) System pressures must be known.
2) Once the hot pressure is known and verified to be in specs, the vehicle is shut off...and the system pressure is monitored. The system should hold pressure, after the slight initial drop, for 20 minutes.
3)If the pressure immediately drops off, the fuel pump check valve and accumulator should be isolated and checked for pressure loss. ("New" doesn't mean functioning properly...)
4)If they test OK, the injectors should be pulled and pop tested. Injector leakage and/or poor spray patterns can cause all sorts of problems with cold and hot starting.
5)The sensor plate height must be spot on for proper hot and cold starting.
6) As to the CO you desire...The correct way to set the CO is to measure the HC on a hot engine. Adjust the HC from high to low. When the lowest HC reading is achieved, the CO level is at its optimum setting.
If you mechanic is familar with MB CIS systems, the problems with your car a truly a no-brainer, as the two systems are identical...
Yourself and others have posted other similar problems with these CIS equipped cars...and the starting point is always system pressures. Why do I stress this point? Simply stated, the CIS system is pressure-based, so you need to know and verify the pressures to accurately diagnose running and starting problems.
HTH...
Regards,
David
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