bruss
XS400 Enthusiast
so i bought a 1979 xs400 thats been "messed" with already, the PO put on a 2 into 1 exhaust and told me he had jetted it, it was running so rich that the plugs fouled black within 50 miles and it would not start on choke and bogged down at around 5k rpms, just for the heck of it i put on pod air filters and it will now start with a lil choke..smokes pretty bad until warm and gets to around 5.5k rpms but is a slight improvement, i just took the carbs off and the main jets are 140's..should i put 150's on it to see if it improves ?