Heard this noise riding the other day shut the bike off right away and had it towed home. I thought it was my timing and was worried i was getting valve piston contact, thats at least what i thought it was. pulled the heads and there is no contact marks on the pistons. i did find that two return springs on the vertical head broke. is this normal or common on an 02 ms4 monster? checked my rod bearings they seem fine no movement at all. what could this noise be?
Did you find the pieces that broke off?
Not common on 4-valvers to break closer springs.
took the vavle cover off and the end of both of the springs were right there. Is that the noise i could be hearing?
While i was inside i noticed the rubber boot around the vavle was pretty brittle. I tried to remove them but i cant get the whole thing off any advice?