possum2082
Petty Officer 3rd Class
- Joined
- Aug 29, 2010
- Messages
- 98
hello everyone, i'm having a heck of a time trying to get the boat running this season and i need your help.
background: the boat ran perfect last year and was winterized properly.
when i tried to start up the boat this spring it sounded like it was starving for fuel. it would run rough and die at idle if i let the throttle get that low. i disconnected the fuel line going into the carb and very little fuel was coming out of the line when i cranked the engine.
i suspected a lack of fuel and i saw several possible sources: gas tank pick up screen, fuel filter, and fuel pump. i bypassed the fuel filter and eliminated that variable--same results. unfortunately, i can't get the pickup tube out of my gas tank as there is not enough room without ripping out the floor of my aft cabin. the fuel pump is the original volvo red mechanical fuel pump with only an inlet and an outlet.
i know people will go nuts...i replaced it with a gm automotive mechanical fuel pump with just an inlet and outlet--EXACT SAME SET UP AS MY VOLVO ORIGINAL! after i did this and fired it up, gas started pouring out of the carburetor. i didn't get to see where it was coming from as i was looking over my shoulder and couldn't pin point it.
This leaves me with 2 possibilities that i can think of:
the automotive fuel pump pumps too hard or fast?
my carb float or float valve is defective?
i haven't asked any questions here in awhile and could really use your help. please give me some wisdom. you can flame me for the auto part, too
background: the boat ran perfect last year and was winterized properly.
when i tried to start up the boat this spring it sounded like it was starving for fuel. it would run rough and die at idle if i let the throttle get that low. i disconnected the fuel line going into the carb and very little fuel was coming out of the line when i cranked the engine.
i suspected a lack of fuel and i saw several possible sources: gas tank pick up screen, fuel filter, and fuel pump. i bypassed the fuel filter and eliminated that variable--same results. unfortunately, i can't get the pickup tube out of my gas tank as there is not enough room without ripping out the floor of my aft cabin. the fuel pump is the original volvo red mechanical fuel pump with only an inlet and an outlet.
i know people will go nuts...i replaced it with a gm automotive mechanical fuel pump with just an inlet and outlet--EXACT SAME SET UP AS MY VOLVO ORIGINAL! after i did this and fired it up, gas started pouring out of the carburetor. i didn't get to see where it was coming from as i was looking over my shoulder and couldn't pin point it.
This leaves me with 2 possibilities that i can think of:
the automotive fuel pump pumps too hard or fast?
my carb float or float valve is defective?
i haven't asked any questions here in awhile and could really use your help. please give me some wisdom. you can flame me for the auto part, too