Question about Harley Davidson Motorcycles
Posted by Anonymous on
Hi Anonymous, take a 15 minute ride, let bike idle for 2 minutes and check oil level, drain or add as necessary to achieve full mark hot level. If you are still having problems, go to your local dealer and purchase part number 8873 check ball, 26262-80 spring, and 11105 o-ring. Then remove the the inboard cap on oil pump body with a large flat bade screw driver, use a pencil magnet to remove old spring and check ball, DO NOT USE!!!!! magnet on new ball. Install new parts and your good to go. Good luck and have nice day
Posted on May 08, 2015
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Posted on Jan 02, 2017
SOURCE: oil leaks from breather box
From your brief description It sounds like you are experiencing Crank Case pressure build up.
I presume your ZZR is of High mileage or possibly previous owners havn't serviced it regularly.
The problem being the compression Piston Rings wear and allow Blow Back gasses into the crank case there by building up pressure, this in turn sends an oil film up the breather tube to your air box resulting in your problem.
You could try an oil & filter change (Synthetic) Top jolly with maybe an additive plus similar for the fuel i.e. Red-Ex or similar, it may help but I doubt a cure.
If you want you could extend the breather pipe away from the box into a drip can or similar, be sure to filter it as you don't want to get contamination down in the cases.
Hope this sorts it for you?
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Posted on Mar 05, 2009
hi 81 yamaha i am concerned about the fuel smell coming out with the oil. could be the carbs flooding filling your crankcase with fuel? if not it sounds like you have blow by which would cause your crank case to be slightly pressured. this is caused by worn piston rings. do not plug your crank vent. if you leave your vent open install small filter to stop dirt from entering jim
Posted on Mar 26, 2009
SOURCE: Fuel from engine breather pipe
There are just three ways for fuel to get into the top end. As mentioned, bad valve guides (exhaust guides are just as old as the intake guides). Bad rings with raw fuel getting past the rings. Either way, fuel is getting up there. Time for a valve job and fresh bore with new pistons and rings. If able to find the parts, I would also install new cam chain and tensioner. You have a very early CB450. Today's VIN numbers have 17 numbers. That is what didn't seem right.
Go to the site below where you can see a parts diagram for your specific bike. I already checked and a lot of parts are available for your bike. You will select the actual brand, year, model, etc., once you go to the site. Part numbers and prices are also shown. You can order parts from this site. In the event no price is shown on a particular part, the part is not in stock. www.babbittsonline.com/pages/parts/viewbybrandand/parts.aspx
You can also Google 'vintage motorcycle parts honda" and find stuff there.
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Posted on Jun 10, 2009
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