Hi guys,
Backstory:
I have a 1991 318i with M42 engine.
My e30 was jerking from time to time when running; it jerked more often when it's wet outside like raining. The jerk can also happen when it's under load like on hill.
I took it to a shop, but they couldn't reproduce the issue.
One day, my car just stalled completely, like there is no fuel. RPM drop immediately to zero, engine cut off. I could start back up for a run for a little while, then the engine will cut off again. Eventually, the car just wouldn't start anymore.
Replaced:
- Fuel pump
- Fuel filter
- Spark plugs
- HT leads
- CPS (Tested the old one with DMM, there is no resistant between the pins)
Tested:
However, the CPS doesn't look exact like the one I pulled out. I did the spark test with all spark plugs out on the intake manifold, they all have sparks when crank.
I also tested the blue temp sensor, the resistant seems to be within spec on cold.
Tested the fuel relay.
I had stomp code 1244 after I replace CPS, which is Camshaft position sensor. I tested Camshaft position sensor with DMM, it seems to at least have the right resistant. I unplugged the battery, and the there is no more code from CEL.
Here is a video of cranking:
It seems some of the cylinders were trying to combust?
When I take my spark plugs out after I crank the car, the spark plugs are usually covered with gas. I guess the engine was flooded, so I try unplugged the fuel pump, and dry the engine by cranking without the fuel pump connected. I know it dried out the engine, because I will have a clean crank after a few cranks without the pump.
What should I test next?
Thanks
Backstory:
I have a 1991 318i with M42 engine.
My e30 was jerking from time to time when running; it jerked more often when it's wet outside like raining. The jerk can also happen when it's under load like on hill.
I took it to a shop, but they couldn't reproduce the issue.
One day, my car just stalled completely, like there is no fuel. RPM drop immediately to zero, engine cut off. I could start back up for a run for a little while, then the engine will cut off again. Eventually, the car just wouldn't start anymore.
Replaced:
- Fuel pump
- Fuel filter
- Spark plugs
- HT leads
- CPS (Tested the old one with DMM, there is no resistant between the pins)
Tested:
However, the CPS doesn't look exact like the one I pulled out. I did the spark test with all spark plugs out on the intake manifold, they all have sparks when crank.
I also tested the blue temp sensor, the resistant seems to be within spec on cold.
Tested the fuel relay.
I had stomp code 1244 after I replace CPS, which is Camshaft position sensor. I tested Camshaft position sensor with DMM, it seems to at least have the right resistant. I unplugged the battery, and the there is no more code from CEL.
Here is a video of cranking:
It seems some of the cylinders were trying to combust?
When I take my spark plugs out after I crank the car, the spark plugs are usually covered with gas. I guess the engine was flooded, so I try unplugged the fuel pump, and dry the engine by cranking without the fuel pump connected. I know it dried out the engine, because I will have a clean crank after a few cranks without the pump.
What should I test next?
Thanks
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