20 Most Recent 2004 Suzuki RM-Z 250 - Page 2 Questions & Answers

Hi,,first thing to check is the valve stem seals,,,then id be looking at piston rings and checking the condition of the bore.

unfortunately it involves removing the head.

good luck.

keep it in power band remember

good luck.

Remove the spark plug, put the bike in fourth or fifth gear then try a jump start but with the key turned off. If the rear wheel locks up when you jump on and release the clutch then the piston has probably seized up OR the kick start-to-clutch hub gearing is messed up. The best thing to do is to remove the left engine side cover and look at the kick start mechanism. You may need to remove the clutch assembly for a full inspection. With the clutch removed the rotor ( crankshaft flywheel ) should turn. If it will not turn then a seized piston, broken cam chain or dropped valve is likely. If the rotor does turn then the kick start mechanism is the problem. Please rate my answer. Thanks!

If you are running 5th gear mid throttle the compression in the motor wasnt enough to push the piston back down

for the record ( i run a ts 250 savage 2 stroke ) i,ve done it my self it happends

try to keep it the power band you will be fine

good luck.

sounds like a blockage somewhere in the carb,,remove carb and clean

i dont know what year is but you're problemme may cam from here this is the one way bering that may slip....you should replace them all at the same time....there is a compagny that produced a better quality bering but i d'ont know if they allready make them for you're quad

well if it has a title runs well and show no sign of excessive wear or tear meaning no parts are needed to be replaced, you should be looking at about $2200 high end $1700 quick sale. At least here in Ohio

With the valve rocker covers off and magneto inspection plug and centre plug removed, turn motor using nut on magneto, counter-clockwise until a line appears centrally in the inspection window. This will be at Top Dead Centre (TDC).
To check this, all rockers should at rebound with all valves closed. There should be a tiny amount of play on all rockers.
If not, (being a 4 stroke) rotate motor one full turn counter-clockwise.
All engine work or strip downs must commence from the position of TDC.
Cheers!

If the kick starter operates normally the likely cause for a transmission lock up is bent shift forks. The bent forks are trying to engage two speeds at once i.e., 2nd and 3rd at the same time. A broken circlip on a tranny shaft could also cause the dual engagement. If the starter is locked up the problem is likely to be a broken retainer clip. There is a possibility that the cam chain may have broken and is wrapped up on the crank gear. Is there oil in the gearbox? The engine may have seized up do to a lack of lubrication. You can see a diagram of your entire engine at the site below. > Please rate my answer www.babbittsonline.com/pages/parts/viewbybrand/default.aspx

You might find a service manual on ebay.com that has a wiring diagram in the book.

sounds like the timing has sliped out a bit,,,check it first

no dont release any gas
you might lower it a little by unwinding the spring preload, but this will soften the suspension
You will probably need a lowering linkage, which is one of the links between the shock and swing arm.

Several things here. Do an oil change, 10w40 motor oil. Run premium gas and install a new NGK spark plug one heat range colder than stock. It sounds like you have an air leak causing a lean fuel mix. Check the carb mount bolts and the intake manifold bolts for tightness. Also set the valve clearances with a cold engine > .002 intake and .003 exhaust. Check for any cylinder head leaks. This would show up as oil on the cooling fins at the base of the cylinder head. Tighten the head bolts if needed.

It should build up some pressure, before it overflows as it heats up, perhaps you need a new cap.
If the bike starts and runs ok it probably isnt a head gasket gone

Check the lash of the wrist pin? They do make a clacking noise if too much play is involved

One oil filler, check your manual or download one from one of the manual sites on fixya. Quantity is written on crancase generally, or dipstick on filler plug, The oilpump, pumps the oil throughout engine.

use some grease on the threads and lock nuts. Make sure the axle and lock nuts are loose before trying to adjust the bolts.
The bolts really only set the chain and wheel, until the axle is tightened,
grease the axle as well.

hi,if your bike is burning the trans fluid,it sounds like one of the seals has not seated properly allowing trans fluid to enter the bottom of the intake/combustion chamber,i am afraid to say it but you will need to pull it apart again and investigate...cheers

http://motocross.transworld.net/1000015179/features/2004-suzuki-rm250/

NGK BR8EG is stock plug, I changed to a NGKB9EGV (comp. racing plug) and noticed better start, slower warm-up but much fuller power band.
The above link gives great details and links for your bike. Cheers.

good question ... what is your problem?

What you describe sounds normal ...