1992-93 40hp johnson vro fuel problem!??!

[quatro4444]

having an issue with my 40 hp johnson, is my first boat. boat will start up fine just replaced the plugs, gas line and primer ball and fuel filter.. but if i let it run in neutral or in gear for a bit it will turn off after a while like its running out of gas.... if i keep priming the ball it will run until i stop. i have no idea what the problem is. the guy i bought it from said the fuel pump was changed but who knows couldve bullsh*tted me as well. if anyone has had this problem or knows a way to fix this please let me know and you will be my new best freind hahaha jk but really its driving me nuts since guy told me i wont have any issues at all. it started right up for me when i looked at it even drove it for 15 mins but now this.. hope someone can help. could it be the gas tank? i ran the hose directly in the tank without the clip on and it did the same thing so i dunno. any help or suggestions will be greatly appreciated.

 

[quatro4444]

Re: 1992-93 40hp johnson vro fuel problem!??!

i have the biggest boat headache right now lol , the boats got plenty of gas its just like there istn a continuous flow going to the motor since i have to keep pumping the primer ball... i wanna be out fishing right now!! lol

 

[quatro4444]

Re: 1992-93 40hp johnson vro fuel problem!??!

grr nothing yet.. maybe fuel pump????

 

[tashasdaddy]

Re: 1992-93 40hp johnson vro fuel problem!??!

read ethanol, and carb rebuilding. http://forums.iboats.com/showthread.php?t=299680

 

[quatro4444]

Re: 1992-93 40hp johnson vro fuel problem!??!

read ethanol, and carb rebuilding. http://forums.iboats.com/showthread.php?t=299680

do you think thats it? its my first boat so i am a newbie to all this any other ideas?

 

[EAVES]

Re: 1992-93 40hp johnson vro fuel problem!??!

THe VRO maybe gone out is is a combo of a oil and fuel pump in together

 

[quatro4444]

Re: 1992-93 40hp johnson vro fuel problem!??!

THe VRO maybe gone out is is a combo of a oil and fuel pump in together

im not sure if i understand what your saying can u explain a lil more please.....

 

[BruceW]

Re: 1992-93 40hp johnson vro fuel problem!??!

I have a 40hp also ,and have had similar problems in the past. Now ,if you squeeze the primer bulb and it keeps running,there's a clue right there. Now you know the gas is not being pumped to the engine. What can cause that? A closed vent on your gas tank could do it. Dirty fuel filter,weak fuel pump.Anyway sounds like your problem is in that area.
I just switched from the VRO system to a regular fuel pump,runs great.Easy to do. I'm no expert. New fuel pump cost about $50.

 

[quatro4444]

Re: 1992-93 40hp johnson vro fuel problem!??!

I have a 40hp also ,and have had similar problems in the past. Now ,if you squeeze the primer bulb and it keeps running,there's a clue right there. Now you know the gas is not being pumped to the engine. What can cause that? A closed vent on your gas tank could do it. Dirty fuel filter,weak fuel pump.Anyway sounds like your problem is in that area.
I just switched from the VRO system to a regular fuel pump,runs great.Easy to do. I'm no expert. New fuel pump cost about $50.

ok im guessing its the fuel pump then... (i hope) i changed the fuel filter, primer bulb and gas hose and clips so im guessing thats my next thing to try to replace that. thanks

 

[quatro4444]

Re: 1992-93 40hp johnson vro fuel problem!??!

if anyone has any other suggetions it wont hurt but i think im gonna try the fuel pump...

 

[quatro4444]

Re: 1992-93 40hp johnson vro fuel problem!??!

I have a 40hp also ,and have had similar problems in the past. Now ,if you squeeze the primer bulb and it keeps running,there's a clue right there. Now you know the gas is not being pumped to the engine. What can cause that? A closed vent on your gas tank could do it. Dirty fuel filter,weak fuel pump.Anyway sounds like your problem is in that area.
I just switched from the VRO system to a regular fuel pump,runs great.Easy to do. I'm no expert. New fuel pump cost about $50.

also im not sure of the exact year... this site doesnt have any fuel pumps for a 92-93 40hp johnson the guy i bought it from said it might be a 92-93 so im going on what he said but wont believe a word he says no after im having problems and i just bought the boat... any ideas on what to do? damn i have a bad boat headache since the person i bought it from told me it ran great and it seemed to when he started it but obviously i was mislead... i dunno just need some help thx guys... if its the fuel filter it doesnt seem that expensive but ive tried to find one for the yr i searched and no luck any ideas would be helpful thx.

 

[d.boat]

Re: 1992-93 40hp johnson vro fuel problem!??!

also im not sure of the exact year... this site doesnt have any fuel pumps for a 92-93 40hp johnson the guy i bought it from said it might be a 92-93 so im going on what he said but wont believe a word he says no after im having problems and i just bought the boat... .

There should be a metal plate on the transom mount area which gives a model number. That is how you determine the date. There's web sites which tell you how to decipher the number, and also many postings (maybe even a faq?) here on that subject. If you find the model number, you could post it here and someone will decipher it for you.

But, if you're actually going to replace the fuel pump with a brand new VRO (now known as OMS) fuel pump, it's not critical that you know the year, but just follow this guide: There are only 4 current P/N's for VRO/OMS Pumps, and there's a long list of supercedes for each. The current P/N's are

5007423 - for 3 wire pumps, converts to 4 wire...except 2 cylinder
5007420 - for 4 wire pumps except the engines listed for 5007421
5007421 - for 4 wire pumps 2 cyl. 40-50 hp and 3 cyl 60 TTL
5007422 - for premix applications

These aren't cheap so I'd recommend you really try to figure out if it's the pump first. Although, I think what's happening is pretty classic for fuel pump. The thing is, the "fuel" side of the pump can be rebuilt, and that is very cheap.

By the way, this article will tell you all about the pump, how it works, etc.

http://continuouswave.com/whaler/reference/VRO.html

Note the part numbers in this article might not be current. The above reference is.

 

[tashasdaddy]

Re: 1992-93 40hp johnson vro fuel problem!??!

OK before you do anything else, let's find out exactly what motor you have. model # on port side of transom mount, or one the Freeze plug on the top of the block. this tell us what you have.

if the pump is bad, my recommendation is to go to the premixed fuel pump, that is block mounted, it is a very simple conversion. you remove the vro pump, block the pulse line, and reroute the incoming fuel line to new pump, and reroute the outgoing line from new pump to the fuel line splitter. you use this pump. http://www.iboats.com/Sierra_18_735...z.36857--**********.824329505--view_id.174141

this pictures is a 1993 40hp with new pump.

 

[quatro4444]

Re: 1992-93 40hp johnson vro fuel problem!??!

OK before you do anything else, let's find out exactly what motor you have. model # on port side of transom mount, or one the Freeze plug on the top of the block. this tell us what you have.

if the pump is bad, my recommendation is to go to the premixed fuel pump, that is block mounted, it is a very simple conversion. you remove the vro pump, block the pulse line, and reroute the incoming fuel line to new pump, and reroute the outgoing line from new pump to the fuel line splitter. you use this pump. http://www.iboats.com/Sierra_18_735...z.36857--**********.824329505--view_id.174141

this pictures is a 1993 40hp with new pump.

ok i pulled up any numbers i could find on the engine lol, on the arm that lets the engine down on the left side its 334438, on the right side there was a number as well... it was 432293 on the right side of the mount that holds the engine on i saw a number as well it is 188656 and then on the direct back where the plugs go in 33543 i am gonna put a pic of the engine on in a couple minutes, it looks similar to the pic you show on your posts yet i do not see a fuel pump in the spot where it is in that picture i actually cant see one anywhere... ill put a pic up in a minute thanks so much for your guys help

 

[quatro4444]

Re: 1992-93 40hp johnson vro fuel problem!??!

334207 is another number i just saw if your looking directly at the engine's top im confused lol

 

[quatro4444]

Re: 1992-93 40hp johnson vro fuel problem!??!

here are some photos.. hope they help : /

 

[quatro4444]

Re: 1992-93 40hp johnson vro fuel problem!??!

another pic might be a lil more clear i dunno where the fuel pump even is is it in the front of the engine?

 

[tashasdaddy]

Re: 1992-93 40hp johnson vro fuel problem!??!

here is the fuel pump mount for above premix pump. remove the plug YELLOW, the red should be threaded, to mount the pump. gasket between block and pump. he hole where you removed the plug is the pulse port for the new pump. just take an appropriate size plug (bolt) for the existing pulse line and hose clamp to seal it. unplug the harness to the VRO pump, and harness to the oil tank.

 

[quatro4444]

Re: 1992-93 40hp johnson vro fuel problem!??!

here is the fuel pump mount for above premix pump. remove the plug YELLOW, the red should be threaded, to mount the pump. gasket between block and pump. he hole where you removed the plug is the pulse port for the new pump. just take an appropriate size plug (bolt) for the existing pulse line and hose clamp to seal it. unplug the harness to the VRO pump, and harness to the oil tank.

yea i saw those holes, figured thats what they were for, where is my current fuel pump? dont i have to remove it to put on a new one? and any idea on the year with the #'s i gave ya? i gave alot so i dont expect anyone to know what i was talkin about but at least im getting closer i guess.....

 

[quatro4444]

Re: 1992-93 40hp johnson vro fuel problem!??!

any ideas on what year pump to buy...