Question about Boating

1 Answer

Engine not getting fuel

My engine won't stay running. It will start everytime I spray some starting fluid into the choke, but will quit as soon as that fluid is burned off. This is my first 2 stroke engine, and don't know if has gunk in the lines or a bad pump.

Posted by on

  • 5 more comments 
  • miller4519 Jun 15, 2009

    It's a 1971 Mercury kiekhaefer 4hp. (Merc 40).

  • miller4519 Jun 16, 2009

    Yes, the arrow is in the right direction and the fuel flows out of the line when its disconnected. The fuel is new with a 50:1 ratio. I took apart the fuel pump and cleaned all the parts and everything looks fine except for a black diaphram inside. I don't know how the fuel makes it through this diaphram or what it's purpose is?

  • miller4519 Jul 03, 2009

    Ok, I rebuilt the fuel pump and found that I wasn't getting a spark anymore. So I changed the spark plug and the ignition coil. It started about six times after the change and now "nothing". Do you think I got a bad coil or possibly something in the flywheel?

  • miller4519 Jul 04, 2009

    I also wondering if you thing it's possible that the starting fluid could have seized up the engine keeping it from sparking any other fluid?

  • Dean
    Dean May 11, 2010

    Thats probably a vacuum style fuel pump. Really all you can do is take off the first cover of the fuel pump and make sure fuel is at least getting to the fuel pump by again, removing the fuel pump cover and squeezing the primer bulb to make sure fuel is coming from the fuel pump cover. If it is making it there, then the problem could be within the fuel pump itself or in the carburettor bowl or carburettor float. It sounds like the passage from the carby to the cylinders is clear as it is sucking up the starter fluid ok into the combustion chambers.

  • Dean
    Dean May 11, 2010

    If you remove the fuel hose, and squeeze the primer bulb on the fuel line, does fuel come out of the connector to the motor?Also check the primer bulb is installed correctly with the arrow on the primer pointing toward the engine in the line. Could also be fuel pump problem, or even old, stale fuel if you are not using fresh mix.

  • Dean
    Dean May 11, 2010

    If obviously has spark and electricals if it is starting up and kicking over so yes likely to be a fuel flow issue. What brand outboard and how many horsepower?



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 5,687 Answers

There may be a screen in the tank pickup. Since you are new to 2 cycles- swish the tank back and forth before using it to remix the oil. You can open the fuel pump and see if it has something in it. If you have the motor connected to the fuel line when the fuel pump is off you can blow through the fuel line to see if it is clear. Remember there are check balls in the connectors and you need to have the hoses connected to get flow.

Posted on Jun 16, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Cub Cadet has gas, has spark, has air -still won't start/run

Are you pulling the plug to check for wetness after cranking it a few times, WITHOUT using the starting fluid? Also, I would recommend using carb cleaner in place of the starting fluid. Starting fluid runs the engine VERY hot for a brief time and can possibly damage rings, valves, and aluminum parts.

Jun 09, 2013 | Garden

1 Answer

Generator Won't start

Gap the plug at .030 What is most likely the main problem is whatever gas sat in the carb. Even with fresh gas there will be some old gas still in the float bowl. You may be able to drain the bowl and be OK but I have a feeling that the carb will need to come off and be disassembled and cleaned properly. You can try spraying carb cleaner (I dislike starting fluid as it is too volatile and carb cleaner does just as well in this instance) into the carb/intake. Remove the air filter, open the choke, and spray the carb cleaner in through that way if possible. You can actually keep an engine running by spraying with short bursts. Even by just spraying once you should be able to get the engine to start. If it does start but then will not stay running without spraying more into the engine then it is a carb problem.

Aug 24, 2012 | Coleman Powermate 6250 10hp Generator

1 Answer

Engine will run only with choke on

you need to take apart the carb and clean the jets inside

Jun 07, 2012 | Garden

2 Answers

Chevy Malibu 2003 cranks but won't start! I know

You might have a defective fuel tank pressure sensor!

May 05, 2012 | 2003 Chevrolet Malibu

1 Answer

Toro snowthrower model # HSK 635 won't restart, stated first time, ran about ten minutes, then died, put brand new spark plug in, getting good spark, just won't fire up, even when I tried a li

check and make sure its getting fuel. when trying to start, spray some engine starting fluid in spark plug hole. just a little bit. replace the plug then try to start it. if it starts then quits then its a fuel problem. fuel not reaching engine. good-day !

Jan 30, 2012 | Garden

1 Answer

I have a Briggs and Stratton 31m777 have rebuilt the carb, adjusted valves, It starts with choke but won't stay running. I can dump fuel into the carb and it will run.

Let it run with the choke for a while. There may be buildup in the cylinders that needs to be burnt out. In order to do that you need to let it get hot. Try very slowly opening the choke after its been running a while. Listen to the engine and if it sounds like its about to die, close the choke. You may also need to use starter fluid, it burns very hot and clean. You can pick it up at your local auto parts store. You may need to spray it into the carb the first few times to get it started.

Jun 06, 2011 | Garden

1 Answer

Started cutting out. then quit running. wont start now. fuel filter is good. would it be something besides fuel pump?

Get a spray can of either (starting fluid) While someone cranks the engine spray SMALL amounts of the fluid into the air intake. I stress small amounts a little at a time so you don't blow the engine. If the engine does start I would check to see if you have water in the fuel system first and if not I would check the fuel pump pressure.

Dec 21, 2010 | 1989 Buick LeSabre

2 Answers

New Karcher pressure washer won't start

replace the fuel carburetor filter and, or, your fuel tank filter

Aug 31, 2009 | Karcher 2500 PSI Pressure Washer

Not finding what you are looking for?
Boating Logo

Related Topics:

95 people viewed this question

Ask a Question

Usually answered in minutes!

Top Boating Experts


Level 3 Expert

696 Answers

ray gallant

Level 3 Expert

52518 Answers

Fabrice Wolters

Level 2 Expert

331 Answers

Are you a Boating Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides