ok, i got a 1994 yamaha blaster with 240 bbk in it. the kickstart lever wont go down to turn the engine. and i took the cylinder off and tried pulling on the piston and pushing on it and it wudnt budge. ive been told its a rod bearing or crankshaft bearing. can anyone help me out on wat it is? i dont have money to throw around on parts i dont need and want to get it going
blaster wont start. plz help
- Thread starter whited94
- Start date
take the cylinder off too and then you will be able to get a look at the crank and see whats wrong. but yeah sounds like lower end bearings or main crank bearings. but its possible something is just jammed in there too so you need to look.
The problem could be a number of things...You first step should be to pull the actual cylinder jug off the engine, if you havent already done so. I mean, do you have just a naked piston and rod in your hand and it is seized, or does the piston not move up and down in the cylinder when looking at it with the head removed?
Either way, I'm gonna guess that the piston is seized in the cylinder from overheating and/or lack of lube. Gonna have to check this out a little more. Post some pics of what you find, and we can help you diagnose what went wrong...
Either way, I'm gonna guess that the piston is seized in the cylinder from overheating and/or lack of lube. Gonna have to check this out a little more. Post some pics of what you find, and we can help you diagnose what went wrong...
well then it sounds like your crank and main bearings are hosed... time to rip that sh*t apart!! lol
they hold the crank in the cases, unfortunately the cases need to be split to fix this problem. but if i were you i would consider getting a +3 stroker crank and getting the jug ported to match while its getting fixed
yea man, you need to take the cylinder head off and see what's going on in there. when you do, take some pics. we want to see too!
cases can be split without one but its definately a good idea. well in that case man i would hop on egay and get a late model used crank and order some new bearings and gaskets. prolly can do the whole job urself for under $150
eeehhhh mabey... you will need to get the crank out and find out exactly what teh problem is. it could be the mains or teh mains could be fine and its the lower end of the crank. the thing is if its apart why not put new bearings in? how much woudl it suck to freshen up one and not the other and then have the other part go bad?
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