Good day everyone. I have a bit of an issue that I am hoping you kind folks can help me out with.
I have been dealing with some worn out AMAL 932's for a little while now and decided to upgrade to a new set of AMAL Premier 932's. After installing them, I realized that I need some help. Here are the details.
Commando MK11 850
K&N filter
94 octane fuel
The new amals were set up properly for the commando 850 with the proper slides, needles and jets.
260 main
3 1/2 slides
106 needle jet.
I have always used the Bushmans tuning tips for Amal setup in the past and so used the same process to set up my new carbs. Equal spacing on the slides and balanced cable pull. All good, no issues there. Everything moves freely.
Set the needle to the middle position.
Now, The bike started quite easily right away, but would not even give me a glimmer of idle. If I let the throttle off it simple stopped running. I raised the slide height but this made no difference. Idle jet started at 1 1/2 turns, tried it at all the position between 1 turn and 2 turns and also found no difference. All the while, I could hear a significant sucking sound coming from my air filter. I had never heard that before so I chocked it up to the carbs not leaking (like my old ones) and pulling the proper amount of air through the filter.
Choke did not help idling either, with the throttle at one position, turning the choke on made the rpm's rise, but would die just as fast if I let the throttle off.
Once the bike had warmed up, I couldn't start it at all. I also received a lot of kickback when trying.
I have a Boyer MKIII ignition, and have tested it heavily on previous occasions trying to figure out if the problem with my bike was the carbs or the ignition. It was the carbs for sure. The boyer is working perfectly. I have advance set up at 30 at the moment, in the hopes I would reduce the kickback I was receiving with the old carbs.
Any thoughts on this would be greatly appreciated.
Thanks.
Cory.
I have been dealing with some worn out AMAL 932's for a little while now and decided to upgrade to a new set of AMAL Premier 932's. After installing them, I realized that I need some help. Here are the details.
Commando MK11 850
K&N filter
94 octane fuel
The new amals were set up properly for the commando 850 with the proper slides, needles and jets.
260 main
3 1/2 slides
106 needle jet.
I have always used the Bushmans tuning tips for Amal setup in the past and so used the same process to set up my new carbs. Equal spacing on the slides and balanced cable pull. All good, no issues there. Everything moves freely.
Set the needle to the middle position.
Now, The bike started quite easily right away, but would not even give me a glimmer of idle. If I let the throttle off it simple stopped running. I raised the slide height but this made no difference. Idle jet started at 1 1/2 turns, tried it at all the position between 1 turn and 2 turns and also found no difference. All the while, I could hear a significant sucking sound coming from my air filter. I had never heard that before so I chocked it up to the carbs not leaking (like my old ones) and pulling the proper amount of air through the filter.
Choke did not help idling either, with the throttle at one position, turning the choke on made the rpm's rise, but would die just as fast if I let the throttle off.
Once the bike had warmed up, I couldn't start it at all. I also received a lot of kickback when trying.
I have a Boyer MKIII ignition, and have tested it heavily on previous occasions trying to figure out if the problem with my bike was the carbs or the ignition. It was the carbs for sure. The boyer is working perfectly. I have advance set up at 30 at the moment, in the hopes I would reduce the kickback I was receiving with the old carbs.
Any thoughts on this would be greatly appreciated.
Thanks.
Cory.
