got a 2000 mach z stock motor except for a exhaust can last year fouled plugs went to a 45 piolit solved the problem now after getting it out this year fired right up no problem took carbs off cleaned them like i do every year put boyesen rad valves in it and put carbs back on all new gas and everything and now it smokes like a ##### and fouls plugs bad and now what it does which it never did before is with the choke on full and engine cold it takes 10 or so pulls to start it then when it does start it smokes real bad and runs real rich bad set of rad valves?i checked all this again chokes they :cussing: :cussing: :cussing: :cussing: are not sticking ,needle and seats are all sealing,floats were adjusted last year and not touched this year,oil pump not sticking in fact its a little on the lean side just a fuzz so any suggestions???? i only changed the reeds will it cause it to run that rich??? and why so hard to start???and the smoke is not antifreeze it is fuel rich the plugs after 5 minutes all of them now are black it revs up good and all but man it never ran like this until i put the reeds in is it just a whim that something else happened when i put the reeds in and its not the reeds at all?????