Finally I get to know it is the problem of distributor cap. It is a 1977 Mercury 1150 L6 with distributor.
For the problem that happened two months ago, I have changed the switch, trigger, coil and the starter. And I also cleaned the carburetor again which I did 4 months ago.
But it still can not be started.
I checked the spark, all of them, it sparks now and then, not consistent at all. Then I connected the high-tension line, which comes out from the coil, directly to the in-line spark tester. It sparks strong and continuously. As a conclusion, the problem comes from distributor cap. And I don't know how to solve it.
1. the spring carbon piece was changed 6 months ago new
2. The trigger was changed, but the rod is the same, and no obvious damages. And the trigger plate was installed exactly as instructed. I bought the CDI-trigger.
3. The distributor cap is never cleaned, do I have to clean the tips inside it?
Any suggestions are appreciated, thanks.
For the problem that happened two months ago, I have changed the switch, trigger, coil and the starter. And I also cleaned the carburetor again which I did 4 months ago.
But it still can not be started.
I checked the spark, all of them, it sparks now and then, not consistent at all. Then I connected the high-tension line, which comes out from the coil, directly to the in-line spark tester. It sparks strong and continuously. As a conclusion, the problem comes from distributor cap. And I don't know how to solve it.
1. the spring carbon piece was changed 6 months ago new
2. The trigger was changed, but the rod is the same, and no obvious damages. And the trigger plate was installed exactly as instructed. I bought the CDI-trigger.
3. The distributor cap is never cleaned, do I have to clean the tips inside it?
Any suggestions are appreciated, thanks.