scout-j-m
Chief Petty Officer
- Joined
- Jul 31, 2009
- Messages
- 636
All, I just finished rebuilding my power tilt/trim unit. I was so happy I decided to start her up. Needless to say it didn't work. I primed the bulb and opened the tank vent. I have an inline filter between the fuel pump and the carb which filled full of gas as the bulb was primed. I tried to start it a few times and that didn't bother me too much since I've yet to really clean out the carb and the few times this season Ive started the motor, it took a while to fire up. The last turn of the key, I noticed the inline filter slowly losing gas and emptying completely.
First off, I checked the bulb which was somewhat hard and would firm up with a few pumps. I then checked the hose connection from the fuel line to the fuel pump. Then, I removed the fuel line and pump the bulb and saw the gas flow so I knew everything was good up to that point in the system. I also noticed that if the hose clamp was loosened and the buld primed, gas would spew out of one small area at the connection point. Also, fuel never entered the inline filter. Judging by this, I believe the fuel pump is blocked internally somehow as it seemed like the inlet was blocked off.
I replaced the pump diaphram and gasket about a week ago. The large spring looked good. I only checked one check valve (the one I could depress without removing it). Since that work was done, I've sucessfully started and ran the motor 3 or 4 times and a totaled amount of about 15 running minutes. The motor is a 1994 70hp btw. Sorry for the length of the post and thanks for any help; it is greatly appreciated.
First off, I checked the bulb which was somewhat hard and would firm up with a few pumps. I then checked the hose connection from the fuel line to the fuel pump. Then, I removed the fuel line and pump the bulb and saw the gas flow so I knew everything was good up to that point in the system. I also noticed that if the hose clamp was loosened and the buld primed, gas would spew out of one small area at the connection point. Also, fuel never entered the inline filter. Judging by this, I believe the fuel pump is blocked internally somehow as it seemed like the inlet was blocked off.
I replaced the pump diaphram and gasket about a week ago. The large spring looked good. I only checked one check valve (the one I could depress without removing it). Since that work was done, I've sucessfully started and ran the motor 3 or 4 times and a totaled amount of about 15 running minutes. The motor is a 1994 70hp btw. Sorry for the length of the post and thanks for any help; it is greatly appreciated.
