Evinrude Misfire

[ajdobson]

I have an 85 hp Evinrude. I think it is a 75' but not positive. Went to fire my engine up, turned the key and nothing happened. Need some help.

 

[yoster]

Re: Evinrude Misfire

We need a bit more info in order to help.

Can you provide some background? Was it previously running? If so, how long has it sat? What have you ruled out so far?

When you say 'nothing happens,' what do you mean by that? Does that mean it wouldn't even crank, or it cranked but wouldn't start?

Unfortunately without offering more information, it's going to be impossible to help you.

 

[ajdobson]

Re: Evinrude Misfire

Well, first of all, I live in Florida. I had it running about 10 days ago. When the key is turned nothing from the engine moves. Normally I have a problem with it just not turning over. It would crank but not turn fully over. This time seems that nothing moves. This happened on Friday and I haven't taken a full look at it. Wanted some opinions on where to look when I got a chance.

 

[yoster]

Re: Evinrude Misfire

So it would crank over slowly previously, but now not at all.

I'd start by checking the voltage of the battery. If below 12.6v (engine not running), charge it up. There's a chance that the charging system on the motor isn't operating properly, so the battery isn't staying charged, hence the slow turning-over and the eventual no turn over at all. If you can get the engine started and find that it IS charging (voltage at battery will climb to around 14v), but the battery keeps getting weak after letting it sit for a few days, then you have a bad battery.

Secondly, you could have a weak, and now dead starter. Start with the item above first though.

 

[Auxlarry]

Re: Evinrude Misfire

I would also check the positive and negative cables for any corrosion or loose fitting connections. Check from the battery all the way to the engine and remove, clean and reinstall.

 

[ajdobson]

Re: Evinrude Misfire

I have had problems with the battery but I know what happens when that is the problem. This is nothing like that. I have an electric tilt which works perfect. I know it's not the battery this time.

When I say that nothing happens when I turn the key, I mean NOTHING. Everything inside the engine doesn't move. Im guessing it is the starter. What would you recommend doing?

 

[mrcj001]

Re: Evinrude Misfire

Check the fuse at the engine.........

 

[James R]

Re: Evinrude Misfire

Put a socket wrench on the flywheel nut and try rotating clockwise.
If it wont rotate then the motor is seized. If it rotates then look to your battery and the connections. Water, especially salt water, is the enemy of electrics. Clean, using a file or abrasive, all the battery connections, at the battery and the motor, then try again if still nothing then try checking for volts at the starter solenoid. Go with a test meter between the main + connection at the solenoid and the motor case. If you have 12 volts then try linking between the main + connection at the solenoid and the yellow red on the solenoid. This should turn the motor over. If not link with a pair of pliers between the main + on the solenoid and the output side of the solenoid that goes to the starter motor. If this works then the solenoid is faulty. Replace it. Always remember that there is a switch in the remote control that prevents you starting if the lever is not in Neutral.
Hope this helps.

 

[ajdobson]

Re: Evinrude Misfire

Put a socket wrench on the flywheel nut and try rotating clockwise.
If it wont rotate then the motor is seized. If it rotates then look to your battery and the connections. Water, especially salt water, is the enemy of electrics. Clean, using a file or abrasive, all the battery connections, at the battery and the motor, then try again if still nothing then try checking for volts at the starter solenoid. Go with a test meter between the main + connection at the solenoid and the motor case. If you have 12 volts then try linking between the main + connection at the solenoid and the yellow red on the solenoid. This should turn the motor over. If not link with a pair of pliers between the main + on the solenoid and the output side of the solenoid that goes to the starter motor. If this works then the solenoid is faulty. Replace it. Always remember that there is a switch in the remote control that prevents you starting if the lever is not in Neutral.
Hope this helps.

What's a solenoid?

 

[5150abf]

Re: Evinrude Misfire

they are normally black and have 2 big lugs on them, one on top and one on the bottom and there will be a big cable running from the starter to the solenoid.

As stated you want to BREIFLY connect the top and bottom lugs with pliers or any type of metal, the object here is to see if the starter kicks on, if it does that is all you need.

It may spark a little but nothing to worry about.

If that engages the starter it is probably just a bad connection somewhere.

Also check your battery cables, I have read that they corrode from the inide out so they may look normally be but be ate up inside.

 

[ajdobson]

Re: Evinrude Misfire

Looked at my boat today. Have a couple more questions and might have found some problems.

1. The wires from the rectifier are shot. So I know that is a problem and I have the replacement part on order.

2. During my snooping around I found this crack.




The crack is on the top of the can and the second picture with the letter "A" on it is the side of the same can. According to Evinrude Intake Manifold Diagram, I believe this to be part #17 "SOLENOID ASSY.,Choke". Should I be concerned with this crack?

3. Using the pictures from above. Part labeled B, according to the Evinrude Intake Manifold Diagram, it is part #30 "LINK ASSY." Right now it is just dangling down. Where exactly is this supposed to go?

4. I know this is an engine group but today, after I found the stuff above, I turned my focus to my live well pump. It wont pump water into the tanks. I took the pump off and connected it directly to the battery. The pump worked. I hooked it back up to the original electric rig and turned it on and it worked. I flushed the intake tube to clear them of any debris. The tubes are clear. I connected the pump back to the tubes and dipped it in some water. It blew the fuse. Next I took the pump back apart and attempted to hook it up directly to the battery. The pump wont turn now. Is my pump now broke to the point of replacing? If I get a replacement pump, will that pump be damaged because the wiring is wrong?

 

[ajdobson]

Re: Evinrude Misfire

No ideas on anything from the last post??

 

[joey nathan]

Re: Evinrude Misfire

Operate the switch that energizes the choke. If the choke plates close, then the crack is not a problem.

 

[boobie]

Re: Evinrude Misfire

If nothing happens, how's your neutral safety switch in the control box doing ?

 

[ajdobson]

Re: Evinrude Misfire

So it would crank over slowly previously, but now not at all.

I'd start by checking the voltage of the battery. If below 12.6v (engine not running), charge it up. There's a chance that the charging system on the motor isn't operating properly, so the battery isn't staying charged, hence the slow turning-over and the eventual no turn over at all. If you can get the engine started and find that it IS charging (voltage at battery will climb to around 14v), but the battery keeps getting weak after letting it sit for a few days, then you have a bad battery.

Secondly, you could have a weak, and now dead starter. Start with the item above first though.

Voltage on the battery checked out fine today. How can I check out the starter?

 

[ajdobson]

Re: Evinrude Misfire

Fuse was blown, put a new one in and no change.

 

[ajdobson]

Re: Evinrude Misfire

If nothing happens, how's your neutral safety switch in the control box doing ?

How do I check the neutral safety switch in the control box?

 

[ajdobson]

Re: Evinrude Misfire

Boats running wonderful! Solenoid was bad. Thanks to all that helped out.