Question about 1995 BMW R 100 R

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Fuel starvation when bike gets to 3/4 revs it starts to splutter.Bike has been standing for a long time and carbs were cleaned out.

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  • Dick
    Dick May 11, 2010

    This could be any number of things. How long is "a long time"? Have you run a tank of gas through the bike since it has been standing? Gaskets may have dried out, allowing air in where it isn't supposed to be, rats may have built a nest in the airbox, rust in the fuel filter, corrosion in the electrical system. What have you checked so far? Was the bike running perfectly when parked? Did you just buy the bike? How many miles on it?

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  • 38 Answers

There are three things all at the same time the bike needs to run:
1.Fuel
2.Compression
3.Spark

If you use starting fluid into the intake, and it continues the same, then fuel is not the problem

Use a compression tester to see if the pistons come to spec

Check the spark plugs, maybe try changing them with hotter plugs or just new ones. Also check the coils and stator for proper ohms.

You might see a little compression loss by a cam being out of timing, so you might check to see that your cams are timed right.

Posted on Jan 11, 2009

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