Answer Save. KZ1000 oil leak. The most common cause of motorbikes leaking oil from the exhaust is that there is a greater proportion of this fluid recommended for gasoline blending. Often, it may not be obvious where an oil leak is coming from, but with a little bit of effort you may be able to find the source of an oil leak and take appropriate action. Bad oil plugs are another culprit responsible for oil leaks on motorcycles, such as Harleys. For some motorcycles, this will be easier to achieve with the help of a jack stand.Finding the point from which the motorcycle engine oil is leaking will help you to determine what method to use to repair it as well as the severity of the problem. You will need to undertake a thorough inspection of the vehicle to locate the precise source of the leak. Went out an hour later, and there's a small patch of oil under it and wet clear liquid dripping along with fumes coming out. Leaking oil = certain destruction. ? Side crankcase plugs and valve cover plugs can also be a source of leaks on your Harley motorcycle. Grab a propane torch, bottle of penetrating spray oil (such as WD-40,) or even a squirt bottle with water in it. For the propane, turn the torch on but don’t actually light it. If you really have a difficult time figure out, try putting some FOOT powder over the SURFACE of the bike where you suspect a leak. Does anybody know the best method to find an oil leak on a motorcycle? If there's no leak, at least your engine is clean. Keep an eye on it after each ride and look for wetness. ... question for u i have a 82 kz1000 i have a oil leak under the sparket cover i think it coming out the drive shift or the clutch shift can u change the seals whit out removing the motor? or is there a another way to stop the leaks . In our case, the path started at the oil … Then apply the gas or liquid in areas you might find a leak. There are some instances when the powder method can be inconclusive, or the leak is coming from a place where powder cannot be properly applied, such as in tight crevices behind the engine. Vintage Motorcyle Info. I completely cleaned the motor with spray engin cleaner, warmed it up and let it site for a day... nothing. Step 2 - Inspection. Generally, the percentage thereof should be 2% but it is best that you consult the manual of your bike to check. Anyways, take a 2 and 1/2 hr ride from 3:30-6, park it. Method 2 of 2: Finding the source of an oil leak using a UV dye and UV flashlight. There are … 5 months ago. Back To Topics. paul. I have got a very small oil leak on my 2007 Road King that is driving me crazy. I rode it for a day and nothing.  After I ride it a few times the drip is back … 11 Answers. Just went out and checked Now at 8, 2 hours later, no oil or gas under it or leaking. On motorcycles, everything is exposed to it should be easier to see. Which is weird cause it was fine, and i didn't even start the bike. This mismatch causes excess oil to be removed from the exhaust. Help small oil leak. Relevance. percy April 22, 2011 8:25 AM PDT . Kawasaki Motorcycle Forums. For finding the leak itself, start your motorcycle up and leave it idling. I have a 2003 road king police model with fule injection. Because leaking oil may follow a twisty path, look for the highest point of any oil trace, and that should lead you to the source. Recently Added Motorcycle Events; Follow CycleFish on Facebook; Motorcycle Forums » Harley Davidson. Oil drain plugs leak when they are not tight. After few hour, a NEW leak will be evident. Vibrations on the motorcycle can cause the oil drain plug to come loose, leading to oil leaks. If you must use a mirror to see the underside. The easiest way to find an oil leak is to clean the engine up really well with degreaser and a toothbrush and ride the bike for a while. 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