GateKeeper
Well-known member
1985 YAMAHA FZ750
4-1 exhaust
stock air box, with K&N air filter
bike pulls good and hard, however, upon deceleration I am getting a lot of backfiring, popping etc out the exhaust, might sound cool (not really) but it's not how I want the bike to run and sound
I have checked all the usual suspects, air leaks, exhaust gaskets, carb boots etc, all seems to be OK and tight and no leaks, at least I don't think so, carbs are in sync, and bike idles fine, and starts no problem
so my next thought was a jet kit, many to chose from and not sure which one to get and from who
Factory Pro jet kit
Sigma jet kit
Dynojet jet kit
During my rebuild I did have the carbs out and did a carb clean, not a full tear down ( I should have, I was lazy) so I don't know the current jet sizes, needle position etc, but I am thinking it's all stock, but I would have to tear them apart to make sure
Anyone else with any other thoughts, tips, tricks, opinions, I am not racing this bike, just a commuter, but would like it to run as best as possible, any racers out here have a good contact on some of the jet kits, or know of a shop that would help out,
4-1 exhaust
stock air box, with K&N air filter
bike pulls good and hard, however, upon deceleration I am getting a lot of backfiring, popping etc out the exhaust, might sound cool (not really) but it's not how I want the bike to run and sound
I have checked all the usual suspects, air leaks, exhaust gaskets, carb boots etc, all seems to be OK and tight and no leaks, at least I don't think so, carbs are in sync, and bike idles fine, and starts no problem
so my next thought was a jet kit, many to chose from and not sure which one to get and from who
Factory Pro jet kit
Sigma jet kit
Dynojet jet kit
During my rebuild I did have the carbs out and did a carb clean, not a full tear down ( I should have, I was lazy) so I don't know the current jet sizes, needle position etc, but I am thinking it's all stock, but I would have to tear them apart to make sure
Anyone else with any other thoughts, tips, tricks, opinions, I am not racing this bike, just a commuter, but would like it to run as best as possible, any racers out here have a good contact on some of the jet kits, or know of a shop that would help out,