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I have an Evinrude outboard 1998 150HP with VRO pump. the motor runs out of fuel at high RPM's. Can an electric inline fuel pump be installed to boast my fuel pressure and will my oil pump still mix my oil correctly? Will the electric pump be able to flow fuel through the factory pump and my oil mixture still be correct?

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Hello Pvsteward.

I would not recommend an electric pump to boost your pressure. A definite fire hazard as well.
A boats biggest enemy!
If you have a built in fuel tank it will have an anti-siphon valve installed.
The valves are there to prevent fuel spillage in case of a hose rupture.
These valves can trip at full throttle on big outboards due to the large amount of fuel consumption.
You may need to get a valve capable of a higher flow.
This happened to me when I went from a 135 to a 175HP.
A new valve did the fix.
Have you checked the screen in the fuel pump? In behind the inlet many OMC pumps had a screen to filter out debris. It may be worth a look.

If you would like further advise on this, please ask me in a comment.
Thank you for using FixYa.
KL

Posted on Mar 16, 2011

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Give this site a try.
http://the-manuals.com/johnson/evinrude-outboards-vro-70-manual/

Or if you do not find what you are looking for you can try several from this page.

http://www.google.ca/search?q=evinrude+manual+55975c&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a

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