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fuel pumps

By croixflats
May 4, 2008 in Boats & Motors.

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croixflats

Posted May 4, 2008

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Posted May 4, 2008

I have 1989 Yamaha prov 150. Ive replaced 2 fuel pumps in it and I think another one is going out. I had to rebuild the motor after the first one failed. It has two fuel pumps and I'm not sure how to find out witch one is starting to fail.

3 Questions;

1: How does one pinpoint witch pump is failing

2: Is it the ethanol eating the seals away

3: Can I get fuel pumps that are ethanol tolerant for my motor if ethanol is the problem.

Any help would be helpfull

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