Engine Problem I have kdx 125, cylinder is cracked, I need a full engine set. Can I find brand new set? Thnx

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EITHER CRACKED HEAD.BAD HEAD GASKET..POSSIBLY BAD WATER PUMP GASKET..TO NAME A FEW THINGS TO LOOK FOR..

I think you have worn internal engine parts. To much oil is getting past the piston rings. Try installing new piston rings and honing the cylinder walls.

unfortunately apart from removing the lights you wont turn it into a MX bike, new expantion chamber,porting and suspension mods are all quite expensive, just try and learn as much as you can as it is(minus lights)

It really depends on where the crack is located.
The engine is actually separated by the engine block and the cylinder head.
CYLINDER HEAD - located on the top of the engine where the spark plug is located
ENGINE BLOCK - located just below the cylinder head and separated by a gasket.

I believe you can buy them separately.
Because if there's a crack on the engine replacing the part that has a crack is the best thing to do to avoid loose compression and oil leakage.

Have you checked the engine earth from the starter motor?

Best bet is to get hold of a medical syringe, sounds strange, but bear with me on this. Crack open the banjo bolt on the engine casing and let the fluid run out. Re tighten the banjo bolt. Disconnect the pipe from the lever end, this pipe should now be empty. Now this is where your syringe comes in. Fill syringe with fluid, and squirt it into the pipe, may take a couple of fills. When it is full, re connect it to the master cylinder (lever end) you'll prob have to take the lever off the bars. DO NOT PULL THE LEVER IN !!!! Open master cylinder, fill with fluid, close and try. You may need to do a little bleed again though. If so, fill syringe with fluid, attach a piece of regular petrol line to the end, connect this to bleed nipple on slave cylinder, and crack open (engine end). Open master cylinder cover (on bars), pull lever while injecting fluid. You should see the air bubbles in the master cylinder coming out. Once clear, lock off bleed nipple THEN release lever, close Master cylinder, job done. Sounds worse than it is, and after you have done it a couple of times, its really easy.

Cheers,

Mista B.

the retail value in good condition is approx $1,500. meaning it looks good, runs good, good tires, breaks,chain and sprokets. but with the extras you have and the after market up grades, i would start with a little higher price.

Yup, needle valve. Even a spec of sand can cause this. Take it apart and clean or replace it. Get a new overflow hose on it as well (helps keep dirt out of the carb and directs excess fuel away from the hot engine).

try here http://www.manualz.info/

hope this helps