fuel pump rebuild

[Sam Luckie]

I posted earlier about my 50 hp mercury motor starving at 1600 rpm. Bob B. offered suggestions and so far I have replaced the fuel line and bulb with mercury parts. I did find something odd when I replaced the fuel line. When I removed the hose from the motor connection, I noticed there was what appeared to be plastic film lodged in the connector. Could this be from the original hose lining??? Starving issue seems to be solved.

Now I want to work on another issue. Motor seems to skip some at wot. It runs at 5600 rpm if the tach is correct. Anyway, back to my main question. I purchased a fuel pump rebuild kit and inline fuel filter for my motor serial #0T742859. Is it a difficult rebuild? Does not look too difficult. Are there any websites that can show you how? Or is it straight forward.

 

[Bob Bourget2]

The plastic film is more than likely the fuel line coming apart internally. Kind of clear / brown, will crumble. TYPICAL of ethanol-related damage.

As far as the skip at WOT....will it stop if you back it off ever so slightly? You might be on the rev-limiter.

Pulse pump rebuild is fairly straightforward......follow the included directions.

 

[Sam Luckie]

Matter of fact it does quit skipping if I ease back a bit. I used to get 32 mph out of the boat. Now I can only get 28 or 29 if the speedo still reads correctly. Was hoping to break the 30 mark again.

Thanks for the advice and help.

 

[Scott Hammer TOXIC]

All a speedo does is plug a hole in your dash and let you know that you are moving. Unless it is a high end aftermarket, 95% of them aren't within 15mph accurate. GPS is your friend when it comes to consistent readings. Tach should be accurate though.



TOXIC

 

[Bob Bourget2]

Go up "one pitch size" on your prop...speed will increase....slightly. You're on the limiter.....