major engine problem
Three Wheeling
Joined: Mar 2005
Posts: 76
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RE: major engine problem
Here are few suggestions for misfires:
-Faulty spark plug or wire
-Faulty coil (pack)
-Faulty oxygen sensor(s)
-Faulty fuel injector
-Burned exhaust valve
-Faulty catalytic converter(s)
-Running out of fuel
-Poor compression
-Defective computer
Since you have replaced the catalytic converter(s), that is not it. Since the happens on multiple cylinders, it is probably not the Fuel Injector(s) or Burned Exhaust Valves. I think I would check the following:
- Fuel Rail Pressure
- Cylinder Compression
If you can find a cheap used computer, you MAY try switching that out as well. Also, if you have a way to check the O2 sensor switching, that would be very helpful. My guess (and this is only a guess) is that your O2 sensors are going out...
Tim
-Faulty spark plug or wire
-Faulty coil (pack)
-Faulty oxygen sensor(s)
-Faulty fuel injector
-Burned exhaust valve
-Faulty catalytic converter(s)
-Running out of fuel
-Poor compression
-Defective computer
Since you have replaced the catalytic converter(s), that is not it. Since the happens on multiple cylinders, it is probably not the Fuel Injector(s) or Burned Exhaust Valves. I think I would check the following:
- Fuel Rail Pressure
- Cylinder Compression
If you can find a cheap used computer, you MAY try switching that out as well. Also, if you have a way to check the O2 sensor switching, that would be very helpful. My guess (and this is only a guess) is that your O2 sensors are going out...
Tim
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mandythelandy
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Dec 26, 2008 04:33 AM
