|
Re: Misfires
Spark plugs are Delco and less than 500 miles...Wires were changed after this problem started to Carquest premium (ouch 60 bucks). The misfire cylinder does seem to change (although almost always Cyl 1 or 2)
The CAM offset is sitting at a near perfect 0. (I was the guy who had to file the distributor clamp to get it there. Approximately 1.5 teeth).
Run 1 misfires
In 14 seconds
Cyl 1 - 392 MF
Cyl 2 - 308 MF
Run 2
In 42 seconds
Cyl 1 - 7109 MF
Cyl 2 - 885 MF
Changed MAP, Coil, Fuel Filter
Run 3
In 18 seconds
Cyl 1 - 78 MF
Cyl 2 - 1906 MF
Run 3 At first misfire the state was :
RPM = 3154
MAF = 14.4 lb/min
VSS = 72.1 mph
MAP = 13.8 psi
Fuel Injector BW Pulse Bank 1 = 18.1 ms
Fuel Injector BW Pulse Bank 2 = 17.6 ms
ST Fuel Trim Bank 1 = 17.2 (Went up from -0.78)
ST Fuel Trim Bank 2 = 0.78
LT Fuel Trim Bank 1 = 6.25
LT Fuel Trim Bank 1 = 1.56
Advance = 20.5 degrees BTDC
Throttle postion = 82 %
Intake Air Temp = 78.8 F
Engine Coolant = 205 F
Ignition control Voltage = 13.7 v
Mike
|