Engine Noise, please listen

Is there a rubber O- ring on the filler plug ?

There is on mine.

going to try this little experiment for my ride home after work and see if it changes anything............

Quasi crank vent...

little squirt wrote:

going to try this little experiment for my ride home after work and see if it changes anything............

AWESOME!!!!!!!!!!!

well dang, no difference by the time i got home, still has a whining sound at idle when hot.............. back to the drawing board..........

Proper female bike you have got.

Whine Whine Whine Whine Whine.............

got a hook up on complete used motor. should be here next week. going to swap out engines and then tear mine down to see if i can find the problem. Looks like i'll have a extra engine to play with

i woula just did the 280 kit bye the time everythings said and done youll probly spend less? but im just guessing

yea, but im not sure a piston will fix my problem yet....i'll save that for when i tear my motor apart, then i'll do a 280 kit on it and send the head for some loving

I'm with 0007. If you lost a bearing it would be bad all the time and fail pretty fast. Has it become more frequent since you noticed it? Pulling the motor apart would be the last thing I would do.

It almost sounds like a trapped air bubble that is bouncing around in the coolant or oil. When you changed the oil did you open the weep bolt? I never do, but those little japanese engineers probably put it there for a reason. Next start up crack it open until you get flow.

Keep us updated, I like these kinds of problems (provide they aren't mine )

ya well this shit is going to blow your mind.


left work yesterday and after my ride home i come to the traffic light and stop, motor making the same noise (as expected) after it warms up at idle. I ride up to the next light and when coming to a stop in third gear i didnt down shift or use clutch. Just came to stop using brakes and let the bike chug down in gear until it almost stalls then i snapped in the clutch lever. Noise is gone...

I take a two extra laps around my neighborhood and get home, let bike idle....no noise

Hmmmmm, I come to work today and its usually making that noise by the time i pull into work...today, nothing, no more noise

WTF!!!!!!!!!!!

Hope it stays this way.........

BTW, my motor hookup didnt go through yesterday, guy had some issues he said....

Man you are lucky Squirt! I love how these things just work themselves out sometimes. I am keeping my fingers crossed for you.

It sounds like a pumping noise on the video clip, but maybe it is something loose in the clutch pack singing? Did clutching ever make the sound go away before?

little squirt wrote:

Hmmmmm, I come to work today and its usually making that noise by the time i pull into work...today, nothing, no more noise

WTF!!!!!!!!!!!

Hope it stays this way.........

Great news!

Hoping your hiccup is done

Well 30 years in the industry and a decade of service and warranty toughr me that mechanical problems NEVER get better EVER
so, you do not have a mechanical problem, I would look at disassembling your water pump etc for inspection

Yea, im not sure im in the clear, im just saying that squeeling sound is no more. going to pull the clutch & basket out tonight along with the water pump too. pics to come this evening....

well pulled the clutch out of it and didnt really notice anything that stuck out. next up is the waterpump.

Nice photos Squirt. Your handy with a camera. Those plastic gears kind of scare me.

Yea, i wasnt too impressed with plastic oil pump gears either

little squirt wrote:

Yea, i wasnt too impressed with plastic oil pump gears either

Yeah, WTF is up with that???? What's the reason for using PLASTIC gears for the oil pump?

Just about every bike has plastic gears, some have had chains in the past but that makes problems
Oil pumps have a consistent load with no weird spikes, they are silent and they don't wear
It's perfect
Have you ever heard of an oil pump gear failure?

When I first saw them it kind of took me back, but after I thought about it for a minute it was obvious that Yamaha had made them of that material for a good engineering reason and not to save money. Thanks for the explanation

There have been gears made of that stuff being used in Yamaha motorcycles for yeeeeeeeaaaaaars. :)