FastRnu2
Well-Known Member
I rode my 2009 FZ1 home from work on Friday. The bike was running normal. Over the weekend I washed it and lubed the chain. Monday morning I filled the tank with 91 octane at the local Chevron by the house and proceeded to work. This is all normal stuff for me.
The bike has a Akro slip on, K&N Filter, & PCIII. No other engine mods. The bike has been running great for the past year.
On the way home from work the bike started running like crap below 3,000RPM. 2-3000RPM is the typical range in stop & go traffic and around town. On the freeway and above 4,000RPM the bike runs perfect.
I did some checking of all the connections under the tank and even disconnected the PCIII. No difference. I filled the tank with Shell 91 octane, no difference. The bike still runs like crap fewer than 3,000RPM which makes it very hard to ride on crowded city streets. It actually drops two cylinders upon take off from a signal until the RPM gets above 3-4,000.
I took it into the local Yamaha Stealer since I have an extended warrantee. They told me that Yamaha’s recommendation for spark plug replacement is at 8,000mi. I have 8,800mi on mine. I approved the spark plug replacement. The bike runs great.
Now my question to all you knowledgeable peeps with the current FI FZ1 is, is this typical for a late model Fuel Injected motorcycle to need a spark plug replacement at 8,000mi? I have had other motorcycles that have had over 20,000mi on the original plugs.
It just doesn’t make sense to me. Should I upgrade the plugs to some unobtainium material?
Any help in this matter would be greatly appreciated.
The bike has a Akro slip on, K&N Filter, & PCIII. No other engine mods. The bike has been running great for the past year.
On the way home from work the bike started running like crap below 3,000RPM. 2-3000RPM is the typical range in stop & go traffic and around town. On the freeway and above 4,000RPM the bike runs perfect.
I did some checking of all the connections under the tank and even disconnected the PCIII. No difference. I filled the tank with Shell 91 octane, no difference. The bike still runs like crap fewer than 3,000RPM which makes it very hard to ride on crowded city streets. It actually drops two cylinders upon take off from a signal until the RPM gets above 3-4,000.
I took it into the local Yamaha Stealer since I have an extended warrantee. They told me that Yamaha’s recommendation for spark plug replacement is at 8,000mi. I have 8,800mi on mine. I approved the spark plug replacement. The bike runs great.
Now my question to all you knowledgeable peeps with the current FI FZ1 is, is this typical for a late model Fuel Injected motorcycle to need a spark plug replacement at 8,000mi? I have had other motorcycles that have had over 20,000mi on the original plugs.
It just doesn’t make sense to me. Should I upgrade the plugs to some unobtainium material?
Any help in this matter would be greatly appreciated.