When the bike starts and runs at idle you cant hear it. When I get to about 15-20 it starts. It gets louder the faster I go. Its not the brakes as it doesnt have the rubbing sound when at idle. The bike doesnt shimmy, or shake and its not the engine, for when I put it in neutral the rubbing grinding sound still can be heard, when I rev it in neutral coming to a stop the sound doesnt change, so I know its not the engine.
Could you check the gear for the chain on front cog. also check the links in the chain. look for metal shine.
Have you tried driving it next to a block wall? The echo off of the wall is great for narrowing down strange sounds..
SOURCE: Engine stalls when engage in any gear from neutral.
CHECK THE SIDE STAND SAFETY SWITCH IS OPERATING
SOURCE: Drives great but at/when drops to idle it stalls
When you are on the bike and riding do you still have the choke out? And stop spraying starter fluid into the carbs..bad bad bad.... bikes start with out that stuff and if you need it then something is wrong.. your gonna mess something up doing that....let me know about the choke and we will go from [email protected]
SOURCE: i have gsxr 600 srad on a 98 plate which at low
Assuming the carb is securely mounted and the noise is not from the tappets, there are several things it could be. One is piston slap. Piston slap translates as a worn piston "rattling around" inside the cylinder. Alternate to that, the wrist pin may have worn the connecting rod to the point where that is the problem. Alternate to that, the wrist pin itself may have wallowed out the piston on each end. Broken rings can make noise (but the bike would be smoking). Lastly, the connecting rod may be rattling around on the crankshaft. Change the oil and look for metal particles in the oil. No matter what the problem is, the engine is going to need to be torn down.
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SOURCE: 83 suziki GS450 idle issues
the problem with the rubber was close but on the gs450 there is a metal insert that even if the rubber was rotted away the metal seals aginst the head so it cant leak. the problem is on the gs 450 suzuki used a cheap throttle cable that kinks behind the gas tank and kinks at the bend to the crabs under the set and the throttle system is a pull only not a dual cable pull push to always close the throttle. if you start the bike a wiggle the bend in the cable that comes out from the twist grip you will see it changes the idle. with either your finger or a screw driver and push the plate down on the carbs that the cable connects too. if the idle drops this conforms your problem. order a new cable from dennis kirk they have the revised one that has metal adjustment screw and metal clip in. better jacket casing as well.
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