Craig
XS400 Member
Hi everyone. This is my first post here. I have been working on motorcycles for many years, and am pretty good at bringing old dead motorcycles back to life.
My son has an 82 400 Maxim. It runs great for about 30 minutes, then looses about half its power between 2K and 6K rpm. It idles fine. At full throttle, it gradually makes it way up to 6k rpm and kicks back in. Happens in all gears. Carbs have been rebuilt. Fuel is flowing. It is running on both cylinders, both ignition coils ohm out correctly. Because this is only happening after the bike is running awhile, I'm thinking it is either the pick up coils or TCI breaking down. Can someone confirm the pick up coil resistance of 120 ohm is correct, as stated in the 82 xs400 service manual. I am reading 30 ohm on one pickup and 50 ohm on the other.
Thanks.
My son has an 82 400 Maxim. It runs great for about 30 minutes, then looses about half its power between 2K and 6K rpm. It idles fine. At full throttle, it gradually makes it way up to 6k rpm and kicks back in. Happens in all gears. Carbs have been rebuilt. Fuel is flowing. It is running on both cylinders, both ignition coils ohm out correctly. Because this is only happening after the bike is running awhile, I'm thinking it is either the pick up coils or TCI breaking down. Can someone confirm the pick up coil resistance of 120 ohm is correct, as stated in the 82 xs400 service manual. I am reading 30 ohm on one pickup and 50 ohm on the other.
Thanks.