Fuel Starvation ?

Q

qdive1

New member
Hey Guy’s I posted the thread a few weeks ago about my powerhead being rebuilt. It’s in the shop now after we pulled it form the motor last week. It’s a 150 V-6 Johnson The mechanic asked me if I had pulled the strainer from the end of the fuel pick up in the gas tank? He said that sometime the strainer can get gump up with junk in the tank and restrict fuel flow to motor. He mentioned that if I have a water separator (witch I have) on the line as well as the small inline filter that is underneath the cowl it’s plenty. I also have another inline fuel filter under the transom on the way to the motor. He suggested I take that one out (under the transom) and make a hole in the pick up screen in the tank, he’s worried about starving the motor for fuel with too much filtering. The boat had been sitting for 10 months or so before I bought it last month. He says with the fuel separator and the filter under the cowl is plenty. I’m having the carbs rebuilt while it’s apart as the #5 Cyl. Was fried due to what seems fuel starvation. This guy does have over 20 yrs. Experience with outboards. Any thoughts on this filtering Issue?

Thanks,
qdive1
 
I have a water separator and a filter under the cowl. Based on what I know about cars, I feel like that is plenty. Sounds like you have a little too much filtering going on. I'm sure some other guys will weigh in on this.
 
I am also a firm believer that you have too much filtration and I feel that you are definitely starving your engine. Just keep the fuel/water seperator and the small screen filter under the cowl.
 
So what do you all think ,,,,,should I pull the fuel pick-up out and remove the screen in the pick up also? is this a common practice because of the possibility of that pick-up in the tank getting clogged? I will definitely remove the one in the transom and change my fuel separator for a new canister while I'm at it...

I’m paranoid spending the big bucks to rebuilt this motor and have something stupid like this give me problems with the fuel delivery..
 
If you maintain your filters and keep them clean so that fuel has no problem passing through them then you will not have a problem no matter how many you have. The problems start when they become clogged and you start restricting the fuel flow. Since the one in the tank is the hardest to get to, many people neglect it, even though it's your first line of defense. So it's really up to you. If you maintain your filters you'll be fine. If not then your engines performance will eventually suffer. :head:
 
I ditch the screen on the pickup, if there's something there, I want it to get sucked up and caught in the water seprating filter. If it just stays in the tank, it will be a continual problem till you remove the pickup, clean it out and hope you got it all. i would also remove the anti siphon valve and replace it with an approved shut off valve(Outboard only). If you have an I/O, replace the anti siphon valve with an electric anti siphon valve. It will help with vapor lock issues.
 
You must log in or register to reply here.
Back
Top