Members who have donated towards server costs
Join Date: Jun 2008
Location: Flushing, NY
bike losing power?
At first I thought I was imagining it but it's happened a few times, and I'm at a loss as to how to start to figure out what's going on.
Most of my riding is done at lower in-city commuting speeds - I spend most of my riding time in 2nd or 3rd gear, with only a few stretches of a few minutes at a time in 4th gear. I usually shift up at around 5K RPM. Rarely, like when crossing a bridge that for some reason has no traffic, I can get up to 5th gear.
The last time that happened, a 5th-gear-worthy stretch on the 59th St. bridge, I found that revving my engine up to 5K RPM wasn't moving me as fast as I thought I should be going. Usually 5K in 5th gear gets me to over 65 MPH, close to 70 MPH, and I was barely doing above 60. Hmm.
This past weekend was the first time in a while I got to take an extended highway trip and I found it nigh impossible to get my bike over 70 MPH. I usually cruise at 65-70 MPH anyway, but it was very strange, it felt topped out. And if I hit an uphill incline I could be nearly WOT and the engine wouldn't rev past 5,500 RPM and I'd be doing around 50 MPH.
Something isn't right but what do I check for? I just changed my oil a few weeks ago, along with other routine fluid changes (brakes, coolant, etc.), and nothing seems particularly amiss otherwise. Spark plugs seem OK but they're about 2 years old; would old plugs factor in a situation like this?
I'm a regular user of SeaFoam so I wouldn't suspect my carburetors, or should I?
"Until you have the courage to lose sight of the shore, you will not know the terror of being forever lost at sea." (Despair.com)