Can buy mechanics stethoscope to better isolate where the noises are coming from or use a long shank screwdriver and hold on the suspected area and press the handle against your ear if space allows. You'd be surprised how well you can hear the internal noises.
I agree with Dave in regards to the screw driver. I have both, and I found using my thumb over the handle pressed up against me ear I could not only hear the exact sound, but can feel it as well!I always use this method when trying to find any strange sound coming from the motor.
If you go that route to dial in the idle mix I would recommend getting a color tune (I have one). It's the only way to get the pilot mix perfect.I agree with Dave in regards to the screw driver. I have both, and I found using my thumb over the handle pressed up against me ear I could not only hear the exact sound, but can feel it as well!
As this is a 1995 model if you have Mikuni carberators, make sure the air/fuel screws are dialed in. They are located under the carberator body. You will need a 90 degree long handled screw driver!
If you go that route to dial in the idle mix I would recommend getting a color tune (I have one). It's the only way to get the pilot mix perfect.
View: https://youtu.be/9mKQvWM0nMg
The plug can ne used with a number of adapters. I had to get the 12mm adapter for my Trophy 1200 (it plugged into my XS1100 no adapter needed). The plug is fairly robust to deal with different compression ratios. The idea is getting the idle mix correct for all cylinders. Assuming you turned them all out to the same value, get the first cylinder right then adjust the others the same. Or if you want it dead on, tune each cylinder. My old XS had the adjusters on the top of the carb (really easy to adjust) so I did each cylinder.Looks good. Previously only read posts deriding the Colourtune. Do mixture presently by ear, no idea how accurate that might be, in my case.
Would need to start bike when hot for accurate setting. On my old Triumph, a hot start is only possible at WOT, then quickly reducing revs. Will this blow the Colourtune to smithereens?
How can one 'plug' work for all engines? Different hotness, gapping, whatever it is that distinguishes plugs?
I didn't mean plug size. I meant, for example, different engines specify different plug hotness. Might this not effect readings, if Colourtune is too cold or hot for a particular engine?The plug can ne used with a number of adapters. I had to get the 12mm adapter
The heat range specified for the plugs is based on engine load. The more air it has to jump under high pressure the hotter the plug has to be. To get the plug to ignite at 8:1 (my old Rocket III) is easier than 13:1 (Haybusa range). There is no load on the engine at idle, so horsepower is moot, and heat range is pretty irrelevant.I didn't mean plug size. I meant, for example, different engines specify different plug hotness. Might this not effect readings, if Colourtune is too cold or hot for a particular engine?
The Triumph is a 14mm, so that's not an issue, nor is access to mixture screw on both carbs.
I have a 96 Triumph Adventurer and it is sounding the same way until you throttle up. I don’t recall it sounding that way last year. Not sure if that is normal. Everything is stock on mine. Triple inline hinkley 900.I've been rebuilding the bike and don't have a reference for how it sounds normally. He is a link to a video. Sounds a little clanking, but I have been through the valve clearances, timing, carbs, etc. Thanks for any input!
Carrot
Thank you for all the replies! I did a compression test today after having rode it around for about an hour. I'm getting a lot of decel pop, especially out of left exhaust (#1 cyl) all valve clearances have been adjusted, screws at 2 turns. Idle is sporadic from cold to hot. Rebuilt carbs with new pilots and main jets and new gaskets, o-rings and diaphragms. All intake rubbers are new. I have not verified float levels, but all looked even. Here's a link for the video of the test. Thank you for any input.I have a 96 Triumph Adventurer and it is sounding the same way until you throttle up. I don’t recall it sounding that way last year. Not sure if that is normal. Everything is stock on mine. Triple inline hinkley 900.