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85 Johnson 150 GT VRO Fuel Pump/Fuel Restriction HELP

J

jskise3

New member
I think I have tracked my problem down to the fuel pump. I have replaced fuel lines, primer bulb, and ran seafoam through lines and carbs. Boat still boggs down at WOT, so i took my dad out with me and let him drive the boat while i pumped the primer bulb. As long as i pumped the bulb that boat ran perfect! No spits, sputters or boggs whatsoever. When i quit... It took about 30 seconds for the boat to starve for fuel and bogg down or completely die. From what I have read this pretty much leaves only the fuel pump?? There is no antisyphon valve and everything else is new including the in line filter. If you think its the fuel pump i have some questions. I premix my gas already so i can go with a straight gasoline pump? what pump do i need? can i rebuild it? Anybody with more experience and understand your input would greatly be appreciated. Thanks so much
 
Rebuild kits for the VRO are available and they are quite a simple pump to repair.-------------------Do not like that idea ?-------------Then install the 2 fuel pumps from an 83 model, also simple to do.
 
You can reconfigure the fuel pump system from VRO back to twin 438559 pumps for 1/2 the price of a new VRO kit.

Swap the plug on the crankcase and the pulse limiter both out for straight nipples. Don't forget to purchase mounting screws (4) when you get the pumps and nipples. You can also do away with the inline filter.
 
i think i would rather rebuild the vro pump if its the cheapest option, sounds like its more complicated to convert to twin pumps. any sites where i can price and buy the vro rebuild kit?
 
There is more than one rebuild kit and there is no " one fits all kit ".---------------Take your pump apart and see which kit you need first !--Post pictures if you like.------------shop.evinrude.com------------ob accessories -----------fuel systems ----vro kits.
 
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talked to a guy at work today... he said he had the same problem and he eliminated his primer buld and replaced it with a low pressure in line fuel pump to help out his weakening vro. Wired to the ignition so when the key is on its pumping. Said that its been runnin strong for 4 years like that. Is this an option? Could there be any problems caused? its only like 30 bucks
 
I see that done quite a bit but I think it is a really bad idea. If you give it a little thought you'll realize why.

Yes quality outboard work is kinda pricey, but there's a darn good reason why. You don't wanna hop on a plane that's been Rube Goldberg'd do ya?
 
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