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
HeIsLegend

Merc 7.5 Outboard, need help

5 posts in this topic

Problem:

Late 90's 7.5hp 2cycle merc will not start.

To start off , last spring I had a new carb kit and water pump installed at a shop. Normally when I pump the gas bulb I can feel the gas go into the cyclinder and usualy the excess gas will flow out thru the carb if I over do-it. The bad boy will always fire up great.

Yesterday after I put in a fresh tank of gas, got the boat in the water and tried firing it up like I always do. This time it when I was pumping the bulb it would felt like there was something clogged preventing gasoline to be primed into the engine. Instead of seeing the gas leak out of the carb when i primed it, gas would come out of the end of the fuel hose at the connector and simply would not start. Making me assume something was clogged in the carb?

Heres a few pieces of the puzzle:

* The fuel line I boght this year.

* I removed the carb from the engine head with the fuel line attached. Sprayed the heck out of it with carb-cleaner.

* When I start to prime fuel is expelled thru the carb still un attached from the block.

(so I'm guessing something is plugged in the camber?)

Any suggestions?

Share this post


Link to post
Share on other sites

I would say you purchased a cheap fuel line and the one way valve is stuck.

Go and buy and factory fuel line and I would think it would solve your concern, or another cheap one for now.

Could be wrong, we will see what others say grin

Share this post


Link to post
Share on other sites

You shouldn't be able to prime until gas runs out the front of the carb, thats what the inlet needle, float and seats jobs are, to stop the flow when the gas has reached a certain level in the float bowl. Shack makes a good point as well. Some aftermarket hoses and connectors are not of the same quality as OEM. If you have gas leaking out of a connector, it needs to be replaced.

Share this post


Link to post
Share on other sites

I toke your advice, I bought and installed an oem fuel line from a dealer. I still get the same problem. Any other suggestions?

Share this post


Link to post
Share on other sites

As said, your inlet valve shuts off the gas that enters the carb. Yours wasn't doing that and you were able to continue to pump fuel via primer bulb.

You went on to say "This time it when I was pumping the bulb it would felt like there was something clogged preventing gasoline to be primed into the engine. Instead of seeing the gas leak out of the carb when i primed it, gas would come out of the end of the fuel hose at the connector and simply would not start."

This is good and that is what should happen when the inlet valve shuts off the gas coming into the carb.

Problem is your outboard won't start now. Could be that you need to choke the engine(normal cold for start) because the carb's inlet valve is working like it should.

Or could be that debris was preventing your inlet valve to close and now it moved and is plugging the valve.

Or your flooded.

Try it again with choke. If no go then pull the plugs and see if they are wet or dry. You'll be needing another carb cleaning with kit. That would be new needle and set(inlet valve) and be sure to check the float drop.

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

    • better late than never!!  so far it's not to late any way!
    • I'm curious about the GenieJar.  Looks like there is a 30oz and a 17oz version.  I wonder how it works in fairly cold weather.  The nice thing about styrofoam is that it insulates against the entire water mass freezing into a minnow-sicle.  I wonder if they recommend throwing it inside your jacket or something. 
    • Agreed. I am getting nervous about the state of out financial situation now, well, I guess getting MORE nervous. Toward the back end of the contract Parise's deal isn't so bad since it was front loaded, but the term is so long. IMO we cannot afford any more buyouts. Pominville is such a buzzkill. Koivu has really played great the last 1 plus this year. No, he isn't going to win many races for the puck, but as long as he isn't on the top line I am OK with that. Staal is doing a little better than I had hoped I guess. I was hoping just for solid play, but there have been a few games where he and Coyle we so strong on the puck the opposition couldn't get control of it.
    • Hey Star, I wouldn't leave the fan there. It's going to get really HOT and will melt ! Move it to the bottom of the cabinet just left of the gas valve and have it blowing up so it pushes the heat out the vents on the top half of the heater.
    • I agree with the backing for the fly line.  Never had any problems and the stuff seems to get better with age.
    • Best thing I've found is backing for fly line.  It has no memory and virtually no knots.  It's better situated for rattle wheels because of the physical size of the backing but I've not had any problems yet with my Frabil tip-ups.  Deepest water we fish in is only 30' with normal depth of around 12'.  Our local Runnings sells 50 yard segments for like $3 each in any color. 
    • The next year my Mom and Dad cooked the turkey in one of those white roasters and it was awesome.  So I told her that too.  Big time.  It was nice and juicy too.
    • i believe it is their first year, one of the guys used to work for Ice Castle at the Pine River plant.  They have videos on you tube.  I have seen them on Facebook and you tube, the house looks nice, but it is not something I would buy. 
  • Our Sponsors