I'm getting ready to ride my 79 that I've been working on for years now. I've started it a few times and runs (or ran)well. I did a single carb conversion on it, so I'm running the 32dft from Stovebolt. My knowledge of carburetors is fairly limited, but I'm not sure if a poorly tuned carb can cause this ticking/knocking or not. It ran several times just fine with no problems previously but I suspect my son may have "adjusted" the idle fuel mixture for me when he was in the shop with me the other day. I rev'd it up a few times while it was warm, and then suddenly started making this sound as it sat on the side stand. It does this both on side/center stand and before/after an oil change. I currently have a new filter, Rotella-T 15W-40, and 6oz seafoam in the crank case. I ran it today for about 5-10 mins, long enough to get the fan to come on, and it didn't seem to impact the sound one way or the other.
When I changed the oil I got a lot of black sludge out (it's been sitting 5 years). I'm not sure how prone the oil passages in these engines are to getting "plugged up", either. I basically have a lot of guesses as to what this could be, but I'm looking for a professional opinion.. or at least more educated speculation.
I haven't changed the belts yet, but was going to this week.
[video]https://youtu.be/_x2x6Xst0a0[/video]
When I changed the oil I got a lot of black sludge out (it's been sitting 5 years). I'm not sure how prone the oil passages in these engines are to getting "plugged up", either. I basically have a lot of guesses as to what this could be, but I'm looking for a professional opinion.. or at least more educated speculation.
I haven't changed the belts yet, but was going to this week.
[video]https://youtu.be/_x2x6Xst0a0[/video]