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oil pump


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jodydid

 
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oil pump

Fri Jun 14, 2013 9:49 pm » Post: #1 » Download Post

hi all i know its been done before but im confused ive got an mc18 and its running fluffy at low revs and its smoking too much and covering the number plate with oil spatters

i have read the pump adjust write up i just want to double check im doing it right

im turning the throttle until the wheel on the carbs starts to move then holding it there fixed and adjusting the two stroke rotor so its just resting on the stop with no slack at all in the cable

i have given myself half mm for safety

so at idle it is just off the stop is this right many thanks
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StephenRC45
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Fri Jun 14, 2013 10:05 pm » Post: #2 » Download Post

Did you read this one?

http://tech.nsr-world.com/nsr250/all-nsr250/nsr250-oil-pump-setting.php
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jodydid

 
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Fri Jun 14, 2013 10:18 pm » Post: #3 » Download Post

yeah thats the one im going to check it tomorrow that the 2nd mark lines up at full throttle just dont want to kill the engine

it was set up with 5mm gap from the stop at idle so was getting far to much and was fluffy
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jodydid

 
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Sat Jun 15, 2013 7:26 am » Post: #4 » Download Post

I've just checked now and it's setup as per the write up but the second mark won't line up so which method do I use? Do I ignore the second line on an mc18
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TuckerBag

 
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Location: New Zealand. - Plastic Supporter - ZipTie/Duct Tape 1989 NSR250R SP MC18 R6k 1993 NSR250R SE MC21 R9
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Sun Jun 16, 2013 8:59 pm » Post: #5 » Download Post

Just to add to the confusion, you could have a read of <this_topic>.
Also, you can <click_here> to see search results from this forum for "Oil Pump Setting".

Sorry if this post is not helpful.
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jodydid

 
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Mon Jun 17, 2013 4:49 pm » Post: #6 » Download Post

yeah that is how my pump was set up and the bike ran like crap and was spitting oil out of both pipes all over the number plate and rear end i have set it up as per the other way as listed in my first post this makes the bike idle,run and ride better with only a small amount of oil out the back of the pipes

does yours over oil?? cover the number plate in black spooge?
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TuckerBag

 
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Location: New Zealand. - Plastic Supporter - ZipTie/Duct Tape 1989 NSR250R SP MC18 R6k 1993 NSR250R SE MC21 R9
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Mon Jun 17, 2013 9:59 pm » Post: #7 » Download Post

My bike (MC18 R6k) has the oil pump set up so that the "position 2" marks line up at full throttle as per this post.
The bikes "seems" to run ok without too much oil splatter. I have not really looked into properly though I guess.
It surprises me that you notice a difference, so maybe there is something to this?

I would have thought that the two different methods of oil pump adjustment would be within about 5% of each other, but that is just an assumption.
Maybe if I get bored one day I may set the oil pump up as per the NSR-World instructions and see if there is any difference.
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Hobbit210

 
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Tue Jun 18, 2013 12:15 pm » Post: #8 » Download Post

Hmnnnn!
This is exactly the problem that I am having with own MC21.
Set up as per the the method to which Tuckerbag is referring my bike spatters oil all over the rear end and runs very lumpy low to mid throttle. It also smokes like a badly smoking thing!!! Rolling Eyes

I've tried two separate pairs of carbs, rebuilt and cleaned. Different main jets with all other jets std...still the same.

Mike
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