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Plumbing a Mikuni Fuel Pump

 
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Evan York



Joined: 14 Aug 2008
Posts: 58
Location: United States, North Carolina,

PostPosted: Sat Nov 17, 2012 6:34 pm    Post subject: Plumbing a Mikuni Fuel Pump Reply with quote

I have a stock-moto CR125 with a PJ carb (it's a 1995 motor), and I have read several different ways to plumb a fuel pump.

What is the best method of plumbing a round Mikuni fuel pump?

Thanks![/img]
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Vernon Head



Joined: 21 Jul 2001
Posts: 455
Location: United States, California,

PostPosted: Sat Nov 17, 2012 7:52 pm    Post subject: Reply with quote

I'll start. I have a Mikuni TMX38. The best thing so far for me is to run one line straight back to the tank as a return line (use the outlet straight across from the intake). The other outlet goes to the carb. That's it.
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Michael Taksa



Joined: 25 Jul 2001
Posts: 1399
Location: United States, Massachusetts, Boston

PostPosted: Mon Nov 19, 2012 7:51 am    Post subject: Reply with quote

Same thing works for me with Mikuni TMX, round pump. pulse line, line from tank, line to carb, line back to the tank from the pump itself. The return line is pointed somewhat "up".
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valentin yakimenko



Joined: 05 Sep 2012
Posts: 20

PostPosted: Mon Nov 19, 2012 12:52 pm    Post subject: Reply with quote

Evan, you shoulda took a pick of the way I routed it... Never had problems, even on long straights...
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Jason Berry
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Joined: 29 Dec 2001
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PostPosted: Fri Nov 30, 2012 9:48 am    Post subject: Fuel Pump Connection Reply with quote

This might help

http://www.swedetechracing.com/news-events-blog/swedetech-technical-help/how-to-connect-a-single-fuel-pump-to-a-keihin-carburetor-for-karting-use/

If you are using the round mikuni pump, for the line going to the carburetor, use the nipple that is 180 degrees from the inlet nipple. Block of the the other nipple that is not in a straight line with the inlet nipple.
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