Speedracer
5th August 2006, 17:46
Changed the oil today, using an engine flush. Changed the oil to 20W-40 cheap stuff.
Anyway I then proceeded to take it for a good run. Took it off road :scooter: which was fun
I drove the bike pretty hard all day.
Anyway I noticed when coming back that it makes a really loud rattle that just becomes audible over 4000rpm. It used to make something similar over 8000rpm which I thought might be the ignition advancing or something - sounded more aggressive like a roar rather than a whirr.
I checked the oil and it's just over 1/2 way where I've always had it around.
My question is:
has my oil flush made the tappets real noisy? or is the bike fucked e.g. bearings etc. I managed to make my tappets louder than the engine on my old cb250rs once, so I could believe it, but it really is damn loud, considering that it wasn't before today. Also the top speed has noticably dropped 10kmh so it has lost power. (could be just me but it does seem slower and has trouble starting).
Its so loud I can't tell where the noise is coming from. At idle its not noticable - maybe theres a quiet noise that you'd expect from tappets but nothing else.
Also I noticed one of the pipes is cold at idle (put the revs on/ choke and it heats up) - anyone know why that might be?
I'm not going to ride it until I figure this out - don't want to make an expensive mistake and get stuck somewhere. But I will check the tappets and compression at some stage when I figure out how you get to the necessary parts.
If this bike is buggered then I guess I'm screwed once again by going for cheap bargains lol. Strange that it lasted the 1700km trip here, and then blows up on an oil change though.
Oh yeah I might have got water somewhere as I washed it after the offroad fun...?
Anyway I then proceeded to take it for a good run. Took it off road :scooter: which was fun
I drove the bike pretty hard all day.
Anyway I noticed when coming back that it makes a really loud rattle that just becomes audible over 4000rpm. It used to make something similar over 8000rpm which I thought might be the ignition advancing or something - sounded more aggressive like a roar rather than a whirr.
I checked the oil and it's just over 1/2 way where I've always had it around.
My question is:
has my oil flush made the tappets real noisy? or is the bike fucked e.g. bearings etc. I managed to make my tappets louder than the engine on my old cb250rs once, so I could believe it, but it really is damn loud, considering that it wasn't before today. Also the top speed has noticably dropped 10kmh so it has lost power. (could be just me but it does seem slower and has trouble starting).
Its so loud I can't tell where the noise is coming from. At idle its not noticable - maybe theres a quiet noise that you'd expect from tappets but nothing else.
Also I noticed one of the pipes is cold at idle (put the revs on/ choke and it heats up) - anyone know why that might be?
I'm not going to ride it until I figure this out - don't want to make an expensive mistake and get stuck somewhere. But I will check the tappets and compression at some stage when I figure out how you get to the necessary parts.
If this bike is buggered then I guess I'm screwed once again by going for cheap bargains lol. Strange that it lasted the 1700km trip here, and then blows up on an oil change though.
Oh yeah I might have got water somewhere as I washed it after the offroad fun...?