Question about 1988 Honda NSR 250 MC 18 SP-R

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Oil leaking Hey, after a ride on my nsrIit started ******* oil out the overflow of the man oil tank, what could this be. Also my bike likes to leak whole tanks of gas onto the garage floor, I turn the gas too of but must have a stuffed o ring in there, even so it shouldnt leak whole tanks through the carbs if I were to leave it on. Any ideas?

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  • Honda Expert
  • 391 Answers

Defective fuel shutoff valve. Some can be rebuilt, others must be replaced. Use same kind if replacing.
Stuck float in carburetor. Does it run good?

Posted on Apr 13, 2014

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Posted on Jan 02, 2017

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cape cod bob
  • 292 Answers

SOURCE: gas leaking from hose that is under tank that is not for gas flow

is it an overflow from the carb? gas will only be in one of 2 tubes and they are the fuel line from the tank and the carb over flow. unless you have an electronic fuel pump then tubes go from tank to pump to carb. if its coming from the overflow then you are getting too much fuel into the carb float chamber. you may have a sticky float. thy getting some Berrymans B12 fuel additive and putting double the doseage in the tank. run engine til hot then leave it to stand overnight. this should break down any gum/varnish that has built up in the system

has this been in storage thru winter?

Posted on Apr 02, 2009

ipodslinger
  • 688 Answers

SOURCE: Fuel leaking into crankcase on 2001 Honda CBR 600

it's probably leaking from the carb and down the cylinder into the crankcase.
it is probably due to a stuck float in the carb. take the float bowl off and make sure it is clean. the float can also be full of gas not letting it float up and stop the gas flow. the carb will fill up and leak wherever it can which is likely the case

Posted on Jul 21, 2009

dnewcombe1
  • 1564 Answers

SOURCE: no fuel to carb, I think..

I would check the vacuum line that opens the fuel feed valve. It's located right under the fuel shutoff valv and is fed by the #2 carburetor.

Posted on Aug 16, 2009

DoubleClutch
  • 376 Answers

SOURCE: I let the bike sit with gas in tank. Now, carbs

You got to take them off the bike and dismantle them completely to clean them real well.

Posted on Oct 05, 2009

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yeskimoe663
  • 224 Answers

SOURCE: After garage storage for 1.5 years, I started her

below the tank from the carb? float needle valve assembly is stuck. you need a carb clean.

Posted on Jun 08, 2010

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