2ruNgineer
Member
Hi guys. I have been keeping an eye on all the recent posts on rough running issues to try and figure out my '46 2N 6V 'missing' issue. She starts reasonably well. It has started down to 15F with no engined heating.
I have good blue spark. To test i am pulling a plug gap to about 1/4" but it never really sparks to the terminal tip because it is jumping back to the threads anyway. Do i need to get a spark gap tester to make sure? I run her on 3 cylinders for a while to make sure it is consistently making. Looks good on all 4 cylinders.
I have decent fuel flow out the carb. I think i could get a pint in 2 minutes as has been mentioned in other posts. I have pulled out the carb screen and bowl screen to verify and clean. In fact, i am soaking the bowl screen to get the last bits of crud off of it and just running w/o it for a day or two to test.
I have replaced plugs, cap and rotor recently, mainly because I had them laying around. Still a sputter. Sputters/misses throughout the whole throttle range. It seems to sputter just a bit less when I have her loaded up with the finish mower or shreader on some decent flora and fauna.
I have cleaned the air intake screen and replaced the oil in the breather cup.
When she's running, I can pull the choke and she shuts down. (normal)
I do think it needs a rebuild on the engine so pressures at cylinders are probably lower than spec, but as long as she starts and I can tune the carb for low smoking I am putting this off for now.
I think i have two more things to check: 1. remove the screen (if there is one) inside the fuel tank checking for blockage and 2. check for manifold leaks. Besides doing these things, what other things can you think of?
When checking for manifold leaks, is using the ether spray around the manifold seams still the best way, or are there other ways to check for this?
Other carb issues possible?
Thanks for your help.
I have good blue spark. To test i am pulling a plug gap to about 1/4" but it never really sparks to the terminal tip because it is jumping back to the threads anyway. Do i need to get a spark gap tester to make sure? I run her on 3 cylinders for a while to make sure it is consistently making. Looks good on all 4 cylinders.
I have decent fuel flow out the carb. I think i could get a pint in 2 minutes as has been mentioned in other posts. I have pulled out the carb screen and bowl screen to verify and clean. In fact, i am soaking the bowl screen to get the last bits of crud off of it and just running w/o it for a day or two to test.
I have replaced plugs, cap and rotor recently, mainly because I had them laying around. Still a sputter. Sputters/misses throughout the whole throttle range. It seems to sputter just a bit less when I have her loaded up with the finish mower or shreader on some decent flora and fauna.
I have cleaned the air intake screen and replaced the oil in the breather cup.
When she's running, I can pull the choke and she shuts down. (normal)
I do think it needs a rebuild on the engine so pressures at cylinders are probably lower than spec, but as long as she starts and I can tune the carb for low smoking I am putting this off for now.
I think i have two more things to check: 1. remove the screen (if there is one) inside the fuel tank checking for blockage and 2. check for manifold leaks. Besides doing these things, what other things can you think of?
When checking for manifold leaks, is using the ether spray around the manifold seams still the best way, or are there other ways to check for this?
Other carb issues possible?
Thanks for your help.