gsxr 600 srad 1997 fuel in oil

[greg1080]

i bought a gsxr 600 as a non runner, started work on it and noticed fuel in the crankcase so stripped the engine and replace the piston and rings as was reccomeded to do so, and put fresh oil in. tried starting it yesterday and fired up for about 2 seconds but cut straight out. i went back to the bike today and petrol has found its way back into the oil

has anyone had the same problem or know what is causing it

[serlant]

what year? could be floats stuck open allowing bowls to overflow and excess to go straight into inlet tract and fill cylinders up
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04 CBR1000RR, 1995 Husqvarna TE410, 1998 VTR1000(Sold), 1990 XJ600(sold), 1996 KH125(dead and sold)

[MickC]

if the bore is worn, putting in new rings won't help, you'll have to get it rebored and go up a size in pistons and rings.
Also check for scoring, that would also allow fuel past the pistons and again you would have to rebore it.
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[temeluchus]

As its an early one I assume its a carburettor equipped bike.

This means the bike is flooding, far too much fuel-it is overflowing from one or more of the carburettors, flowing down the intake, past the inlet valve filling the cylinder. It then seeps past the rings and into the oil.

You will need to remove and inspect the carburettors. Likely culprits are the floats, adjustment of the float height and the float needles and seats. Make sure the floats actually float (chuck em in a bowl of petrol), their heights are set correctly, the float valve seat is clean, that the needles are clean and are not shouldered. The needle should have a conical tip with no ridges or shouldering.

I would replace all four float needles as a matter of course. They are items that need to be replaced periodically.
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Some shite cruiser. Now with guns and FREEDOM!

[mattsprattuk]

A very common fault on SRADs is that the fuel pump diaphragm fails, meaning fuel just leaks into the bores. Easily fixed, but everyone instantly jumps to the conclusion of float bowls...

Could also be a faulty pump.
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Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!!
Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

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