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+--- Thread: power a little down (/showthread.php?tid=66979)
power a little down - Camshaft - 19-01-14
My 01 thou seems to be a little down on power 70,000kms on the clock.
My weekend ride usually includes a blast along a straight up to about 220kms accelerating from 3rd at 90kph after making sure all is clear ahead coming out of a long sweeper.
I was only reaching just over 200kph this weekend. When I got home I watched my recording and the tacho from opening her up in 3rd gear was casually raising to approx 11,000 rpm when prior recordings the needle flies straight to the red line. I thought it was a tad down on power the weekend before so put new spark plugs went in and no different.
Riding about town I can't notice a power drop its only when really giving her the beans at higher rpms.
btw has a k&n air filter which was cleaned and re-oiled 6 months ago 10,000kms since so I wouldn't think its could be a cause.
Any suggestions thought would be great!
Re: power a little down - unfazed - 19-01-14
Have you ever changed the fuel filter?
Re: power a little down - Camshaft - 19-01-14
no, onto it now, cheers
Re: power a little down - PaulSmith - 20-01-14
Six months between maintenance for an air cleaner is being a bit optimistic don't you think? Partial blockage of teh air would give exactly the symptoms you describe and it only takes a few minutes to check.
Re: power a little down - locksmith - 20-01-14
Is there a cloth or some other obstruction in the air box entrance under the seat?
Re: power a little down - solorider - 23-01-14
Also check your leads, mine had some corrosion in one of them, I went for a stick coil mod and it is like a different bike now, and before I had no idle issues just a low rev range issue and possibly a little down on power.
Re: power a little down - Camshaft - 25-01-14
(20-01-14, 12:49 PM)PaulSmith link Wrote: Six months between maintenance for an air cleaner is being a bit optimistic don't you think? Partial blockage of teh air would give exactly the symptoms you describe and it only takes a few minutes to check.
Just cleaned and re-oild air filter. Was slugged up a bit with oil from the pcv pipe at bottom 1/4 of filter
Re: power a little down - Camshaft - 25-01-14
(20-01-14, 05:27 PM)locksmith link Wrote: Is there a cloth or some other obstruction in the air box entrance under the seat?
No, but checked it immediately. Got a couple of things and a rag under the seat could have been that!
Re: power a little down - Camshaft - 25-01-14
(19-01-14, 09:58 AM)unfazed link Wrote: Have you ever changed the fuel filter?
New genuine Yamaha fuel filter fitted
Re: power a little down - Camshaft - 25-01-14
(23-01-14, 01:44 PM)solorider link Wrote: Also check your leads, mine had some corrosion in one of them, I went for a stick coil mod and it is like a different bike now, and before I had no idle issues just a low rev range issue and possibly a little down on power.
When changing the plugs all leads looked ok, will check out the ignition system if the other maintenance doesn't pay off
Re: power a little down - Camshaft - 25-01-14
Monday will be doing a proper run (after checking for cops, locally we have a system :lol ) and will see how things are.
Cheers for all the advice FOC mates