Slow idle speed needle valve, 1976 evinrude 15hp

[brianteel]

Re: Slow idle speed needle valve, 1976 evinrude 15hp

i did not see anything like that when i took it a part, any pictures of it.

 

[brianteel]

Re: Slow idle speed needle valve, 1976 evinrude 15hp

The carb is very clean at this point. blew everything out and made sure cause i did not want to take it apart again

 

[AlTn]

Re: Slow idle speed needle valve, 1976 evinrude 15hp

parts diagrams...marineengine.com....boats.net...shop.evinrude.com...your model no. may be necessary as well

 

[kbait]

Re: Slow idle speed needle valve, 1976 evinrude 15hp

Did you say it starts and runs when you squirt fuel into the carb? If you're checking spark by holding the plug to ground, you may still have faulty spark. It needs to jump 1/4" across open air to get spark .030" under compression. That's a points motor (low tension ignition). Check spark properly and if it's weak, file the points shiny-new and set each set to .020" and check spark again. If still weak on either, coils/wires/condensers should be considered.

 

[brianteel]

Re: Slow idle speed needle valve, 1976 evinrude 15hp

how do i get the flywheel off to get to the points

 

[Monte1961]

Re: Slow idle speed needle valve, 1976 evinrude 15hp

You will need a flywheel puller or a harmonic balancer puller. Remove flywheel nut and stainless steel washer. apply puller and remove. if won't budge, you might have to apply some heat. Good luck.

 

[brianteel]

Re: Slow idle speed needle valve, 1976 evinrude 15hp

would the ignition tune up kit have all the parts? i cannot find the break down. I figure just replace those pasts.

 

[OptsyEagle]

Re: Slow idle speed needle valve, 1976 evinrude 15hp

i did not see anything like that when i took it a part, any pictures of it.

The bushing I was talking about is inside the slow speed orifice of your carburetor. It is a small plastic piece that looks like a very small funnel. It is #10 in this diagram. You should not use carb cleaner on it since carb cleaner and plastic parts don't work well together. It should be changed when you clean the carb since this is where you idle gas mixture is controlled and is intregal to your ability to idle.

 

[Monte1961]

Re: Slow idle speed needle valve, 1976 evinrude 15hp

Unless you specify you need complete tune up parts plus coils. you will probably wind up with on set of points and one condenser. Not all counter help understand that you have two of everything. Before you remove any parts, take plenty of pictures for reference. Post back results.

 

[brianteel]

Re: Slow idle speed needle valve, 1976 evinrude 15hp

The bushing I was talking about is inside the slow speed orifice of your carburetor. It is a small plastic piece that looks like a very small funnel. It is #10 in this diagram. You should not use carb cleaner on it since carb cleaner and plastic parts don't work well together. It should be changed when you clean the carb since this is where you idle gas mixture is controlled and is intregal to your ability to idle.

I did not see that piece or have a it in my kit. I am not even sure if that piece is in there. nothing fell out so i guess it might be.

 

[brianteel]

Re: Slow idle speed needle valve, 1976 evinrude 15hp

Unless you specify you need complete tune up parts plus coils. you will probably wind up with on set of points and one condenser. Not all counter help understand that you have two of everything. Before you remove any parts, take plenty of pictures for reference. Post back results.

The coils on it look like they have been replaced. everything else in the motor looks warn except those. I am thinking the person before replace the coils because of starting problem then gave up.

 

[OptsyEagle]

Re: Slow idle speed needle valve, 1976 evinrude 15hp

I did not see that piece or have a it in my kit. I am not even sure if that piece is in there. nothing fell out so i guess it might be.

It's in there. Almost impossible to see. I know you are getting a lot of different areas to look at, but if my idle was not working, I would want to replace or clean the part that controls it. It will not fall out either. I use a #8 deck screw, and very lightly turn it to bite into the bushing about one turn and pull it out. Make sure you don't drive in that screw too far since the steel screw will eat up your aluminum carb pretty quickly. Maybe others have some better ways to get it out, but that is how I do it. Be careful and good luck.

 

[brianteel]

Re: Slow idle speed needle valve, 1976 evinrude 15hp

It's in there. Almost impossible to see. I know you are getting a lot of different areas to look at, but if my idle was not working, I would want to replace or clean the part that controls it. It will not fall out either. I use a #8 deck screw, and very lightly turn it to bite into the bushing about one turn and pull it out. Make sure you don't drive in that screw too far since the steel screw will eat up your aluminum carb pretty quickly. Maybe others have some better ways to get it out, but that is how I do it. Be careful and good luck.

I will try that after i check the points out. that would require taking it apart again. When i pulled it apart the first time the only thing in bad shape was the float.

 

[OptsyEagle]

Re: Slow idle speed needle valve, 1976 evinrude 15hp

You might be able to get at that part without removing the carb. I have never done it but if you removed the needle and retainer you might be able to get in there and remove it. It may not be the best place to spray some carb cleaner and blow compressed air, but that wouldn't hurt if you can do it without hurting anything. Then re-insert the new bushing and retainer and then screw back in the slow speed needle.

A new bushing and retainer should be in any new carb. kit.

 

[brianteel]

Re: Slow idle speed needle valve, 1976 evinrude 15hp

OK, I am getting fuel at the plug and spudders once and a while but nothing good. I pulled the flywheel and the points were not right but look brand new. I put it back together and was looking at the plugs and I can barley see the spark jump. My next step is to test the coils and the wires. How can i go about testing the spark.

 

[OptsyEagle]

Re: Slow idle speed needle valve, 1976 evinrude 15hp

The best way to test for spark is with an external spark tester. They have inline testers at most automotive shops but Leeroy has a great homemade model below, that works well. The plug boot goes on the bolts and the lead is grounded to the powerhead. Put a 3/8" gap between the bolts and flat metal ground and pull the rope to see if you get the spark to jump. If it does your spark is good. If it doesn't, reduce the gap a bit and see if you have a weak spark. 1/4" gap jump is probably acceptable. Anything less is not.

 

[jmendoza]

Re: Slow idle speed needle valve, 1976 evinrude 15hp

OK Brian, since the engine still will not start, try this:
Swap the spark plug wires, maybe they got reversed.

 

[brianteel]

Re: Slow idle speed needle valve, 1976 evinrude 15hp

This is where i am at. I got it running on fuel and starter spray. It will kind of run at full throttle but nothing less. it sees like something is wrong with the carb or the pump. I am not sure which. I bought a rebuilt pump off ebay and the ports were in different directions then stock one that was on there. Does that make a difference. Anyone on here want to rebuild the carb again for me to make sure it is right.

 

[davema]

Re: Slow idle speed needle valve, 1976 evinrude 15hp

How do you go about installing the #10 bushing idle needle, funnel shaped plastic piece?

 

[forgedin78]

Re: Slow idle speed needle valve, 1976 evinrude 15hp

I would also like to know the trick to installing that bushing......It seems too big to fit in the passage. Do I just drive it in? and how far does it go in? all the way?