croixflats Posted May 4, 2008 Share 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 Link to comment Share on other sites More sharing options...
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