Gas leaking from prop on motor and wont start

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huggins04

Recruit
Joined
Mar 14, 2011
Messages
4
I have a 67 model mercury 9.8 outboard motor and it started when i got it and ran ok. Now when i took it out last it would start run a little then die. Now i cant get it to start it will try to start but wont. It has gas leaking from prop when i pump the bulb up and try to start it thats when it starts to leak. what could it be. what could i do to fix it.
 
C

carholme

Rear Admiral
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Sep 4, 2010
Messages
4,845
Re: Gas leaking from prop on motor and wont start

huggins;

When you pump the bulb up, does it remain firm or does it start to go soft immediately, that is, do you have to keep squeezing it for it to remain firm?

If it goes soft very quickly, remove hose #21 from fitting 22 in this diagram:

http://www.crowleymarine.com/mercury-outboard/parts/398_70.cfm

Make sure it is hose 21 and not 22 or 23.

With the hose end removed, pump the bulb again and see if you have fuel coming out the end of the hose and let us know.

Gerry
 
J

joed

Lieutenant Junior Grade
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Sep 28, 2002
Messages
1,135
Re: Gas leaking from prop on motor and wont start

Gas at the prop(exhaust) would indicate a flooded condition. Stop pumping the ball and turn off the choke.
 
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Chris1956

Supreme Mariner
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Mar 25, 2004
Messages
28,900
Re: Gas leaking from prop on motor and wont start

Gas at the prop also indicates a leaking fuelpump diaghram. You might take a look at it, or simply rebuild the fuel pump.
 
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huggins04

Recruit
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Mar 14, 2011
Messages
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Re: Gas leaking from prop on motor and wont start

Chris1956 said:
Gas at the prop also indicates a leaking fuelpump diaghram. You might take a look at it, or simply rebuild the fuel pump.
Click to expand...

is there a diagram on how to rebuilt the fuel pump or where the fuel pump is located on the motor



thanks
 
C

carholme

Rear Admiral
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Sep 4, 2010
Messages
4,845
Re: Gas leaking from prop on motor and wont start

Then in all probability, it is the fuel pump. I don't know your experience level and that is why I suggested the fuel test as fuel coming out of that hose would have confirmed for you that the pump was leaking internally.

Your engine is a model 1110107 and here is the parts listing:

http://www.crowleymarine.com/mercury-outboard/398.cfm


To find the fuel pump, find the end of line 20 (from the previous link)where it attaches to the carb and follow it backward to the fuel pump.

Gerry
 
P

pscrabber59

Petty Officer 1st Class
Joined
Apr 12, 2010
Messages
246
Re: Gas leaking from prop on motor and wont start

huggins04 said:
it goes soft it wont stay hard
Click to expand...

You might want to try some "Viagra" LOL
Sounds like a bad fuel pump. If you want to rebuild the pump yourself get a service manual. Try your local library its a gd. source for older merc's.
Gd. luck
 
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