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  1. 1

    leak down test

    I want to do a leakdown test on my 1994 txrs yamaha 250, I know I have to get the cylinders to tdc but how much psi should I pump into the cylinder and what is an exceptable percentage of leak down and how long should I keep the guage hooked up for to visualize leak down?
  2. 1

    ignition timing

    Is there anyway to adjust the timing on a 1994 yamaha 250txrs. I looked in the shop manual from yamaha and cant find anything on it. I am assuming it is all controlled by the computer and if it is what would trip the computer to not let the engine advance all the way to 18btdc?
  3. 1

    help rodbolt

    I have twin 1994 yamaha 250 txrs outboards on my boat. The right motor runs strong up to 5700 rpm and the left is having problems at wot it will go to 5400 rpm. They used to both hit 5700. When I gun just one motor at a time the right runs strong to 4300 by itself and the left feels sluggish and...
  4. 1

    yamaha wot problem

    I have twin 1994 yamaha 250 txrs outboards on my boat. The right motor runs strong up to 5700 rpm and the left is having problems at wot it will go to 5400 rpm. They used to both hit 5700. When I gun just one motor at a time the right runs strong to 4300 by itself and the left feels sluggish...
  5. 1

    transom brass drain tubes

    I am replacing the 4 transom brass drain tubes and was thinking of using pvc pipe instead. Any suggestions would be appreciated.
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