noob

[bassquake66]

hello all,fist let me say that i dont know much about bike mechanics,but never to late to learn,heres my problem,i have a 1992 kat 750,i had just bought it,and all was well ran great,till i was on my way to work one morning,it was running fine then all of the sudden i noticed the exhaust sounded almost hollow,and alot deeper than it should,then i lost all top end power,i checked the plugs all looked fine,and it starts right up,im not sure what happened,any insight would be great,thanks

[rexazz2]

sounds like something is blocking exhaust flow

I kind of remember reading something about a piece of metal coming loose in the header where all the pipes collect into one

not sure what year that was

[Kreylyn]

sounds like something is blocking exhaust flow

I kind of remember reading something about a piece of metal coming loose in the header where all the pipes collect into one

not sure what year that was

That would be the posts Kats.. Pre 750 stock was 4-2. Unless he has an aftermarket... then that is possible.

Krey

[bassquake66]

i do have an aftermarket 4 into one vance n hines.

[bassquake66]

ok,ive checked the exhaust,its clear ive checked fuel filter,ive checked air filter,the bike still starts and runs with no engine noise,the fact that the exhaust pitch has changed has me stumped,im not sure what to look at next.

[arsenic]

the pitch changing because of the packing in the muffler. Your baffle is probably shot. Repack it and you'll be good to go.

[Kreylyn]

the pitch changing because of the packing in the muffler. Your baffle is probably shot. Repack it and you'll be good to go.

would that have caused a loss in power though...

Could be a float issue too, flooding 1 or more carbs (hollow sound could be running rich, and loss of power)...

Krey

[bassquake66]

ok,well,i foun that one of the coils was cracked,i replaced that,it helped alot,now it will not idle and it seems to be popping through the muffler,never buy a bike off a friend,lol