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Author Topic: At ramp, can't get pressure in fuel lines.  (Read 1519 times)

April 10, 2012, 08:14:59 AM
Read 1519 times

fmaster360

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At ramp, can't get pressure in fuel lines.
« on: April 10, 2012, 08:14:59 AM »
Been pumping for 10 minutes. Please help. The primer bulb isn't getting hard.
Carl
\'00 Osprey 205 w/ 200hp Ocean Pro

April 10, 2012, 08:28:05 AM
Reply #1

Blue Agave

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Re: At ramp, can't get pressure in fuel lines.
« Reply #1 on: April 10, 2012, 08:28:05 AM »
1) is there gas in the tank?
2) has the bulb been recently replaced?

1975 19-6
3.0 EFI Mercury 150 4S
"Don't count the days make the days count." - Muhammad Ali

April 10, 2012, 08:46:39 AM
Reply #2

Skoot

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Re: At ramp, can't get pressure in fuel lines.
« Reply #2 on: April 10, 2012, 08:46:39 AM »
Get a new fuel bulb, and/or check for any pinhole leaks in or around the primer bulb.
Scott

1975 19-6 - 90hp Tohatsu

April 10, 2012, 08:50:10 AM
Reply #3

Capt. Bob

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Re: At ramp, can't get pressure in fuel lines.
« Reply #3 on: April 10, 2012, 08:50:10 AM »
Quote from: "Blue Agave"
has the bulb been recently replaced?

As in "is it installed in the correct direction"?

It happens, that's why BA asked.

Might be the infamous stuck check valve on the fuel pickup (if you have one).
]
Capt. Bob
1991 210 Walkaround
2018 Yamaha 150 4 Stroke
"Reef or Madness IV"

April 10, 2012, 08:53:25 AM
Reply #4

fmaster360

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Re: At ramp, can't get pressure in fuel lines.
« Reply #4 on: April 10, 2012, 08:53:25 AM »
I think it's the check valve. Got it started though, I'll get some more info to you all later. Thanks!
Carl
\'00 Osprey 205 w/ 200hp Ocean Pro

April 10, 2012, 10:10:07 AM
Reply #5

flounderpounder225

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Re: At ramp, can't get pressure in fuel lines.
« Reply #5 on: April 10, 2012, 10:10:07 AM »
Carl,
Didn't you change the Fuel/water seperator filter?  If you didn't get the new filter completely filled before spinning it on you probably had an air lock in the line, the primer bulb can be a real PIA if your trying to suck fuel from the tank through the filter if the filter had air trapped in the top at the manifold.
Marc
1997 245 Osprey, 250 HPDI.  SOLD

April 10, 2012, 11:09:12 AM
Reply #6

wingtime

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Re: At ramp, can't get pressure in fuel lines.
« Reply #6 on: April 10, 2012, 11:09:12 AM »
Carl another tip on primer bulbs is how you hold them while priming.  If you hold it with the arrow down the check balls will not seat and it will not pump.  As already mentioned if there is air in there holding it arrow down or even horizontal it may not pump at all.  You will find it will pump and prime MUCH faster if you hold the bulb arrow up while you prime it.  This allows gravity to help seat the check balls in the valves.
1998 Explorer w/ Etec 250


1987 170 w/ Evinrude 90

April 10, 2012, 12:07:33 PM
Reply #7

seabob4

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Re: At ramp, can't get pressure in fuel lines.
« Reply #7 on: April 10, 2012, 12:07:33 PM »
Quote from: "wingtime"
Carl another tip on primer bulbs is how you hold them while priming.  If you hold it with the arrow down the check balls will not seat and it will not pump.  As already mentioned if there is air in there holding it arrow down or even horizontal it may not pump at all.  You will find it will pump and prime MUCH faster if you hold the bulb arrow up while you prime it.  This allows gravity to help seat the check balls in the valves.

At Stamas, where I hung almost Exclusively Yamahas, we installed our bulbs in the bilge.  Yam was VERY strict on making sure we oriented them vertically, arrow facing up...


Corner of 520 and A1A...

April 10, 2012, 01:06:00 PM
Reply #8

gran398

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Re: At ramp, can't get pressure in fuel lines.
« Reply #8 on: April 10, 2012, 01:06:00 PM »
That is great advice guys. Always wondered why on the jon boat sometimes it was impossible to prime, other times easy.

April 10, 2012, 03:18:32 PM
Reply #9

Capt. Bob

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Re: At ramp, can't get pressure in fuel lines.
« Reply #9 on: April 10, 2012, 03:18:32 PM »
Quote from: "gran398"
Always wondered why on the jon boat sometimes it was impossible to prime, other times easy.

Try a little WD40 on the oar locks. :idea:
]
Capt. Bob
1991 210 Walkaround
2018 Yamaha 150 4 Stroke
"Reef or Madness IV"

April 11, 2012, 09:23:36 AM
Reply #10

John Jones

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Re: At ramp, can't get pressure in fuel lines.
« Reply #10 on: April 11, 2012, 09:23:36 AM »
Politics have no relation to morals.
Niccolo Machiavelli

April 11, 2012, 10:01:45 AM
Reply #11

Capt. Bob

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Re: At ramp, can't get pressure in fuel lines.
« Reply #11 on: April 11, 2012, 10:01:45 AM »
I know.
I need help.
Sometimes replies do something to me I can't describe.
I realize it's not the reply but rather me.
That sense of worthlessness I feel is all consuming at times but....
I'm trying to improve and admitting one's problem is the first step, still.....

Derail?
How 'bout Deplane, Deplane. :mrgreen:
]
Capt. Bob
1991 210 Walkaround
2018 Yamaha 150 4 Stroke
"Reef or Madness IV"

April 11, 2012, 10:28:46 AM
Reply #12

John Jones

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Re: At ramp, can't get pressure in fuel lines.
« Reply #12 on: April 11, 2012, 10:28:46 AM »
:lol:

Same here.  I just could not resist.
Politics have no relation to morals.
Niccolo Machiavelli

April 11, 2012, 11:54:46 AM
Reply #13

gran398

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Re: At ramp, can't get pressure in fuel lines.
« Reply #13 on: April 11, 2012, 11:54:46 AM »
:lol:  :lol:  :lol:  :lol:







(Hey just upped my post count, again)

 :lol:

April 11, 2012, 06:08:18 PM
Reply #14

ceejkay

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Re: At ramp, can't get pressure in fuel lines.
« Reply #14 on: April 11, 2012, 06:08:18 PM »
silly question but is there fuel dripping out of the carbs? i had this happen to me and after ruled out the common bulb issue found that 2 of my floats were stuck down

 

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