Guests - If You want access to member only forums on HSO. You will gain access only when you sign-in or Sign-Up on HotSpotOutdoors.

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
Finns

Needle Valve sticking?

6 posts in this topic


'84 Merc. 9.8. I put new gaskets and needle valve in carb. Now when I start in the am it will run for a few minutes (5?) and die. I take the bowl off and try to adjust the float, put back together and it runs fine all day. Next morning same thing.

Is the tab on the float supposed to be bent at all? Thanks for any help.
Finns.

Share this post


Link to post
Share on other sites

I take it after running it for 5 min the bowl is dry.
Yes theres a tang on the float to adjust the fuel level. You'll need a manual with and carb model to get the proper float drop measurement.
After it quits is the bulb full/tight of gas? If yes then valve is most likely sticking. Imagine driving down the road and your outboard is bouncing up and down at the same time your float is hammering the valve. You said you replaced the carbs fuel shutoff needle and seat which should have fixed the sticking. Did you have this problem before you replaced it?
If you can pump it back up look for an air leak in the hose, tank vent, leak in the impulse line to the pump, weak pump, plugged filter, plugged screen on the pump, plugged screen inside the tanks pickup line.

[This message has been edited by Surface Tension (edited 10-22-2003).]

Share this post


Link to post
Share on other sites

ST, I don't have a manual that tells the float drop measurement but the carb model is WMB-1. After it quits the bulb stays hard. I replaced the fuel inlet needle (needle valve-fuel shutoff needle) but not the seat. A seat didn't come with the gasket set or the inlet needle. I don't see how it can be replaced. I've been shooting carb cleaner into the seat. Maybe things will cleanup. Thanks for the help. Finns

Share this post


Link to post
Share on other sites

ST; The carb cleaner seems to have worked. I have been using it the last four days with no problems. Finns

Share this post


Link to post
Share on other sites

Good going. Did the new needle have a rubber tip or was it all brass.
Some needles have the little slot on the bottom end that gets slide into a small fork next to the floats tang. I like those, seems to have a lot less problems with that design.

Share this post


Link to post
Share on other sites

The needle valve has a rubber tip on one end and a spring on the other. Is the spring supposed to rest ontop of the float tang or is the tang inserted into the spring? If the tang was inserted into the spring of the needle it would force the needle down as the float settled as gas was used. Just a thought. Anyway the motor was working as of the 28th. Again, thanks. Finns

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  
Followers 0



  • Posts

    • The US doesn't have state controlled media at all. Well, didn't have. Now we have Bannon and Breitbart in the White House, and of course at Trump's press conference there was only a single reserved seat: front and center for Breitbart.   As far as psychological manipulation: you are subjected to it daily, but usually for commercial purposes. You can easily go the whole day without seeing anything politics related, but good look avoiding advertising for a day.
    • Worst buy I ever bought. I sold it the next week. I like 13 products but not this line of products
    • jobs and better paying jobs.   that's about it for me.  Sure there are some perks, but I'd give it up in a second if I could come close to matching my income in Grand Rapids. What sort of field are you in?   Anymore it's all indeed, monster, or some sort of online service.  Maybe a recruiter can place you in something, but it might be a sucky job.  I went to a recruiter a few years ago and they could put me a job in a few days, but it was sort of on the edge of my field and the job sucked.  Still, if I was in a pinch, I'd do that in a heartbeat over sacking groceries.   Nobody reads the newspaper and C-list is for sex work and scams.
    • Thanks for the advice, we do know the areas that we like have liked in the past. Cities is a vague reference as most people up here call everywhere down there the cities. We would be looking at the west metro area or nw suburb area.   Job on is the big thing right now ideally my wife could take a few years off to raise our boys as typically the "cities" pay is more than up here.. I have been looking but what is the best way? Indeed? Newspaper? Clist?   We we are a good distance in a way but we are close to our families. When we get company we get them for 3 solid days. Also once we had our twins it was more so they could see there cousins, aunts, uncles, and grandparents more often than 1-2 times a year.
    • The gdp is right around 18 Trillion Dollars.   Ten years of that, including even a little nominal growth is north of $200 Trillion.   So you are talking about 4.5% over ten years.     And that is assuming that these economists are able to forecast accurately.   We had other economists telling us about the "multiplier" where a dollar of government spending increased GDP by way more than a dollar.     I didn't believe them either.   
  • Our Sponsors