2002 Suzuki DR400 dual sport - My problem is I'm getting fuel into the gear box/crank case. Oil level keeps filing up with fuel - where is it coming from? Any ideas?

IT'S -Cranks but won't start ! a crank - no start vs No crank - no start !

Which fuse box ? under the hood or inside ? Fuse # is it just 39 or is it F1.39 ? If under hood fuse box not used .

Is there spark if you pull a plug wire an hold it near metal ? Is there fuel pressure , need to test with fuel pressure gauge .

Suzuki DR400S - Motorcycle Specs

www.motorcyclespecs.co.za/model/suzu/suzuki_dr400s%2080.ht
1980. Engine. Air cooled, four stroke, single cylinder, SOHC, 2 valves per cylinder ....Valve adjustment can be done without a feeler gauge and the CDI has ..

Dr400 valve adjustment 1 - YouTube

? 2:08
www.youtube.com/watch?v=BH-KFrpwo3w
Nov 19, 2010 - Uploaded by obtrailriders
Dr400 valve adjustment 1. ... Suzuki DRZ 400 Valves clearance check \ sprawdzanie luzu zaworowego PART 2 ...

without the parts in front of me i would say IF they look the same they may marry up, rule of thum is only replace cases in pairs.Or could you have the case welded?

SOUND LIKE FRONT CRANKSHAFT TIMING COVER SEAL OR REAR MAIN OIL SEAL LEAKING START ENGINE LET IT IDLE SEE IF YOU SEE OIL DRIPPING UNDERNEATH CAR LOOK FOR OIL LEAK AT TIMING COVER OR AT REAR OF ENGINE WHERE REAR MAIN SEAL LOCATED. CHECK ON TOP OF ENGINE INTAKE MANIFOLD AREA WHERE OIL PUMP DRIVE GEAR IS.O - RING AT THE OIL PUMP DRIVE GEAR WILL CAUSE LARGE OIL LEAK.OIL PUMP DRIVE GEAR IS LOCATED WHERE THE DISTRIBUTOR USE TO BE LOCATED.KEEP EYE ON OIL LEVEL IN CRANK CASE.KEEP PLENTY ENGINE OIL ON HAND UNTIL YOU FIX.I WOULD FIND LOCATE PROBLEM QUICK AS POSSIBLE BECAUSE OIL LEVEL GET TOO LOW ENGINE WILL SEIZE UP LACK OF OIL..

Look around the clutch cover for a screw or bolt somewhere around the 4 o'clock position(not a mounting bolt, it will actually go thru the side of the cover). Remove it, and with the bike level oil should be at the level of this hole.
If you can't find the oil level hole, or want to be sure, just change the gear lube. There is a drain bolt in the bottom, and the correct amount of oil is stamped on the cases in cc's or cm3. Reinstall drain bolt and measure out the correct amount of good 10-40 oil and put it in.
The gear lube should be changed every 10 hrs of operation, and it's cheap insurance to keep your clutch and tranny in good shape. Good luck!

have you over filed it with gear oil???...check......if this does not fix it...you may have a crank case oil seal gone...& its sucking oil from the gear box in...if so its a engine strip to do both oil seals...

look on the gear box caseing there is a big alan screw head thats the gear box oil filler,, the tranamission filler is on the dif the same kind of alan screw,, dont over fill the gear box or the dif oil

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Needle or seat damaged. Fuel in air box ? Would be wise to make sure crank case isn't filled with gas... you may not want to star it.

Use 10w40 motor oil in the gear box. Don't use any synthetic oils, oil marked "EC", or oil with "special" additives. Use Two Stroke ENGINE oil in the pump.

Top rating? Thanks!