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greenchicken
01-19-2010, 01:01 PM
Hey, my 15 hp Nissan is not running right, seems to me it's still not getting fuel right. The bulb is not staying hard and feels real spongy... is that bulb suppose to be hard or spongy? Do you think the bulb is bad?

gilby1955
01-19-2010, 01:24 PM
could be the bulb or check valves in the bulb, might be a small hole in the gas line that is letting air into the line. I have had both in the past. Look over your line for cracking, look real close at fittings even under the hood and at any ideal clamps. The check valves should let you hear just the fuel sloshing back and forth if they are bad. Man i hate fuel issues.

greenchicken
01-19-2010, 01:47 PM
I think it is the check valve in the bulb because sometimes it will get firm other times spongy

sundance
01-19-2010, 02:35 PM
I think it is the check valve in the bulb because sometimes it will get firm other times spongy

I admit I didn't know exact what to expect when I read the title of this thread :)

You have a really small leak in the bulb itself. I'd put a square piece of duct tape over it and see that makes it better. You can always take the tape off and it will tell you if there is pin hole in the bulb. I wouldn't leave the tape on there. Gas might cut the adhesive in the tape and suck it in. Just a thought. I've done it before on small engines.

greenchicken
01-19-2010, 02:39 PM
thanks to both of you, I am just gonna go get a new bulb

bigfishlilpond
01-19-2010, 02:49 PM
It's not staying hard..sometimes Spong?

I would advise a good urologist

crataegus
01-19-2010, 02:54 PM
You knew someone was going there. Perhaps a "fuel additive" would help!

sundance
01-19-2010, 02:59 PM
You knew someone was going there. Perhaps a "fuel additive" would help!

LOL or a "jump start"

at least it it does have a built in "primer"

greenchicken
01-19-2010, 03:19 PM
I knew I would get plenty of looks at the thread with that title :)

gilby1955
01-19-2010, 04:55 PM
they do make a "blue" Stabil now, just wonder what the secret ingredient in that stuff is?? :D:D

screwdriver
01-19-2010, 08:16 PM
Launch your boat quick, get her rev'd up, blast down the lake, do like Pete and get your limit and leave.

greenchicken
01-19-2010, 08:20 PM
Launch your boat quick, get her rev'd up, blast down the lake, do like Pete and get your limit and leave.

I only dream of catching the fish these guys do here

lildevil_66
01-19-2010, 09:23 PM
Back to topic at hand...if you can remove the fuel line, you may be able to submerge it in a bucket of water and pump the bulb to check the whole system. Just be sure you get all the water out of the line and bulb before you re-install it. If you find no leak, it could be a gasket in the carb. If the bulb is getting soft you should see some deposits of fuel somewhere in the area where it is lying or under the bowl of the carbs. Hope this helps since the rest of the answers have gotten in the gutter

SIMPLEMAN
01-19-2010, 09:35 PM
does pumping the ball when its running bad help chicken?

greenchicken
01-19-2010, 10:18 PM
does pumping the ball when its running bad help chicken?

yup

SIMPLEMAN
01-20-2010, 07:43 AM
chicken keep us posted. if the bulb doesn't help, let us know. between all of us we have had about every fuel issue there is i guess.

Kellog
01-20-2010, 07:57 AM
Sounds like the exact problem I had with my old Suzuki DT40 - 2 stroke. Engine would idle but shut off when I throttled up. Called Alan Yates, the marine engine technician from the now closed Trotters Marine, and told him what was going. He said replace the primer buld. After replacing the primer bulb the problem was solved. I cut the old primer bulb open and sure enough, there was the ball loose and rolling around in the bulb.
There isn't a worse feeling to me to start having outboard engine troubles, especially when your about 5 miles from the landing where you launched at.

Kellog

poppop
01-20-2010, 08:48 AM
Sounds like the exact problem I had with my old Suzuki DT40 - 2 stroke. Engine would idle but shut off when I throttled up. Called Alan Yates, the marine engine technician from the now closed Trotters Marine, and told him what was going. He said replace the primer buld. After replacing the primer bulb the problem was solved. I cut the old primer bulb open and sure enough, there was the ball loose and rolling around in the bulb.
There isn't a worse feeling to me to start having outboard engine troubles, especially when your about 5 miles from the landing where you launched at.

Kellog

And there might be a picture out there somewheres...showing a fustrated Kellog making the best of a bad situation. Using his trolling motor fishing at Tuckertown the day he was having the motor problems.

And on another note....I have my friend Alan Yates number if anyone needs any motor work. He is a Johnson and Evindrude specialist...won't work on Mercury/Mariner other than rountine stuff. He is retired..and doing the work at home on the side. And he is good.