Primer Bulb -shouldn't it pump up hard?

[Rovernaut]

I just replaced my fuel line, ( non Genuine) for my classic Merc 50.<br /> I squeeze it , but it just seems to keep sqirting fuel. It doesn't get hard. Ben awhile since I've eben boating, but thought they firm up real good, and stay that way till you run the engine?

 

[ZmOz]

Re: Primer Bulb -shouldn't it pump up hard?

Yep, it should. Either you have a bad bulb or there's something wrong with the carb(s). If it was the carbs it would probably be obvious where fuel is leaking out...so I would assume there's a problem with the bulb.

 

[Rovernaut]

Re: Primer Bulb -shouldn't it pump up hard?

Thanks ZmOz, I reused the old Tank end connection ( to a pacemaker tank) on the new bulb and hose assembly, may be this is where I am sucking in air as well?<br />The Fuel filter on the out board only fills 1/2 way when I prime, I see the fuel squirt in, but then it's empty again. No fuel is leaking from the Carbs.<br />I only bought this motor recently and when I get it running it's ok. But I think it's not getting fuel on start up as the fuel pressure is not mantained.<br />I check the tank end for an air leak.

 

[Engrguy]

Re: Primer Bulb -shouldn't it pump up hard?

Rovernaut...I replaced my fuel line and bulb early this summer. When I went tried to prime it, it would not firm up. I noticed I had installed the bulb in the wrong flow direction. Their should be an arrow on the bulb indication the direction of fuel flow.

 

[Rovernaut]

Re: Primer Bulb -shouldn't it pump up hard?

Thanks Engryguy, I will double check that too, could be an honest mistake made! <br />I saw the arrow, but may have accidently switched it???????

 

[Boatin Bob]

Re: Primer Bulb -shouldn't it pump up hard?

Could just be a defective bulb too. They are supposed to have little check valves inside to prevent the backflow of fuel once you have primed the line.

 

[Drybo]

Re: Primer Bulb -shouldn't it pump up hard?

Use original mercury bulb, not wal-mart. The mercury gets firm, the cheapo not.

 

[Rovernaut]

Re: Primer Bulb -shouldn't it pump up hard?

The arrow is in the correct position of flow, so it may be sucking air on the tank connection fitting

 

[ZmOz]

Re: Primer Bulb -shouldn't it pump up hard?

Try unhooking it from the motor, and pumping some gas through the line. For some reason the new bulb on my outboard won't firm up about every second time I use it...and if I pump some gas through it, it works fine.

 

[timmathis]

Re: Primer Bulb -shouldn't it pump up hard?

It just needs a little viagra!!!

 

[Rovernaut]

Re: Primer Bulb -shouldn't it pump up hard?

If it doesn't perform soon, I'LL CASTRATE IT!