Trail Boss valve cover
#1
Trail Boss valve cover
I have read almost all the valve adjustment topics here, but none covered my issue.
A little over 2 years ago, I did a valve adjustment on my 2000 Trail Boss.
After I did this adjustment a couple of years ago, seems it ran fine. This ATV doesn't see much service. Well, about a year ago, I started it up, and went about my business in the barn, letting it warm up, and idle. I turned around and the barn was filling with smoke. I ran down to it, and it was pouring oil onto the hot exhaust. I couldn't see what was wrong, but I was afraid I had a cracked block.
Fast forward to now. I am just now getting to it (baby, move, same job but moved office, etc etc). I got it disassembled, and the valve cover was just sitting there, as if I forgot to put it back on.
Now, mind you, I didn't forget to put it back on. After all, I rode it several times after the valve adjustment.
What could have made the valve cover pop off? I'm pretty sure I got it on good, but I guess it's possible it was cross-threaded or something.
Could I have done the valves too tight or too loose and some exhaust pressure caused it to blow off?
What's going on? Help!
Larry
A little over 2 years ago, I did a valve adjustment on my 2000 Trail Boss.
After I did this adjustment a couple of years ago, seems it ran fine. This ATV doesn't see much service. Well, about a year ago, I started it up, and went about my business in the barn, letting it warm up, and idle. I turned around and the barn was filling with smoke. I ran down to it, and it was pouring oil onto the hot exhaust. I couldn't see what was wrong, but I was afraid I had a cracked block.
Fast forward to now. I am just now getting to it (baby, move, same job but moved office, etc etc). I got it disassembled, and the valve cover was just sitting there, as if I forgot to put it back on.
Now, mind you, I didn't forget to put it back on. After all, I rode it several times after the valve adjustment.
What could have made the valve cover pop off? I'm pretty sure I got it on good, but I guess it's possible it was cross-threaded or something.
Could I have done the valves too tight or too loose and some exhaust pressure caused it to blow off?
What's going on? Help!
Larry
#3
#4
Quad Patrol
Don't let the hp numbers fool you. Its all in how you get it to the ground. Clutching clutching clutching!
Don't let the hp numbers fool you. Its all in how you get it to the ground. Clutching clutching clutching!
#5
Trail Boss valve cover
OK, so I did the valve adjustment carefully and replaced the valve covers. I started it up and it sounded like crap. But it has sounded like crap for a long time.
I let it warm up and ran it up and down the driveway a few times. It sounded much better after warmup. I can't see any exhaust leaks, but that doesn't mean they don't exist. The exhaust system is original (from September 1999). But I think the crappy rattly sound is more internal.
Any thoughts?
Larry
I let it warm up and ran it up and down the driveway a few times. It sounded much better after warmup. I can't see any exhaust leaks, but that doesn't mean they don't exist. The exhaust system is original (from September 1999). But I think the crappy rattly sound is more internal.
Any thoughts?
Larry
#7
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