Evinrude 225 getting stuck around 3000 rpm

[SeaSkiff]

Re: Evinrude 225 getting stuck around 3000 rpm

Could the shift interrupter switch do this if it were stuck? Is there a neutral safety on this engine that limits RPM if it sense the shifter is in neutral? I know some of the newer models have this sort of protection - not sure about back this far.

The interrupter problem might explain the spark weakness issues as well?????

Troy

 

[Big flop]

Re: Evinrude 225 getting stuck around 3000 rpm

Unhook the black/yellow-stripe wires at
The pack's that will eliminate the ignition
switch, kill switch,boat & motor harness &
shift interrupter.
How do the flywheel magnate's look?
In your last pic they look like small peices
are stuck to them, sometimes means
broken magnets ??

 

[88seville100]

Re: Evinrude 225 getting stuck around 3000 rpm

It does not seem like there is any saftey or limiter holding the motor back. When I floor it, it feels like it wants to go all the way up, but it bogs back down for some reason.

Could the kill switch cause a weak spark? It seems like that switch will either allow spark or it wont. I have spark, just very weak. It will only jump about a 1/4" on all cylinders. Once in a while it will do better. Its starting to seem like the stator is bad. Or could the rectifier cause a weak spark?

Btw the battery is brand new, and cranking speed is good. The spark plug wires are old, but I tried swapping them around. They cant all be bad. And all ground look good.

 

[88seville100]

Re: Evinrude 225 getting stuck around 3000 rpm

Do any of you guys know where I can find a wiring diagram for the whole engine? Something like what was posted above, only for the whole engine? That would be great in eliminating any wiring issues.

 

[j_k_bisson]

Re: Evinrude 225 getting stuck around 3000 rpm

Already posted one for you.

 

[88seville100]

Re: Evinrude 225 getting stuck around 3000 rpm

Ohh my mistake. I thought that was just the ignition system the first time I looked at it. Thank you.

 

[SeaSkiff]

Re: Evinrude 225 getting stuck around 3000 rpm

Did you try unhooking the interrupter wires as suggested? I believe they are your problem.

They are the yel/blk going to each power pack.

 

[88seville100]

Re: Evinrude 225 getting stuck around 3000 rpm

I did unhook them and retry the spark test. There was no change. I havent tried on the water yet, but I am not gonna put the boat in the water again until I get this spark fixed. I am betting the spark is the issue. I didnt think the interrupter wires would be the issue, because wouldnt that either be it works or doesnt work sort of thing? For instance, it either has spark or none at all? I have spark, just very weak.

So the other day I did a resistance test on the brown wires from the stator. According to CDI it should have been 950-1100 ohms. I was only getting 850. So far I am thinking the stator is bad and causing the weak spark. My DVA will be here tomorrow so I will try to confirm that with cranking voltage. CDI says that should be 150-400v. I am thinking I will be lucky to see over 100.

 

[88seville100]

Re: Evinrude 225 getting stuck around 3000 rpm

So another update for today. I got a DVA and tested the stator and powerpacks. When testing the brown/brown yellow charge wires from stator to power pack I got around 135 volts. CDI says it should be 150 min, but my manual says 130+- 5 so Im thinking the stator is ok. The resistance was still low at 857 ohms. It should be about a 100 higher. You guys think I should be concerned with that?

The powerpack test was the part that really confused me. I connected the red test lead to the orange wire at the coil (slid the lead under the boot and grounded the black lead). At cranking speed the volts were only about 3 on all cylinders. I dont really understand how it could have been so low. It should be at least around 100. And the fact that it was every cylinder really didnt make sense. I guess both power packs are bad?

What do you guys think?

 

[j_k_bisson]

Re: Evinrude 225 getting stuck around 3000 rpm

1)What is the DVA measurements for the startor on both sets of coils. There is one for charging and one for powering the power packs.
2)What is the rectifier DVA and OHM's measurements?

These motors are known for the startor going and the rectifiers going bad. I replace everything on mine including the coils. I did not change the timer base. I did not want ot have any problems on the water. But that is the way I do things. Recheck the out puts from the stator on both set of coils and let us know the results. Alao Ohms reading on both sets.

 

[88seville100]

Re: Evinrude 225 getting stuck around 3000 rpm

1)What is the DVA measurements for the startor on both sets of coils. There is one for charging and one for powering the power packs.
2)What is the rectifier DVA and OHM's measurements?

These motors are known for the startor going and the rectifiers going bad. I replace everything on mine including the coils. I did not change the timer base. I did not want ot have any problems on the water. But that is the way I do things. Recheck the out puts from the stator on both set of coils and let us know the results. Alao Ohms reading on both sets.

The stator has 2, 2 pin plugs. One for each power pack. I read out both of these harnesses. Each one has 857 ohms, and the DVA was around 135 with the plug disconnected from the power pack. With the power pack connected that same plug gave me around 145 volts. Once in a while it even jumped to 150. So it seems like the stator might be ok. But as far as one for chargine and one for power, how do I know the difference? For each power pack there is just the one 2 pin plug from the stator, then anothe 4 pin from the timer base.

I didnt test the rectifier yet. How would I go about doing that?

Also any advice on this power pack output issue? I still cant figure out why each of those orange power pack wires is only giving me 3 volts? It should be closer to 150.

 

[j_k_bisson]

Re: Evinrude 225 getting stuck around 3000 rpm

Ok there are Yellow wires coming from the startor to the rectifier. Those are the charging wires. I was just making sure you where checking the right ones.

If you are not in the approved zone (service manual) for these componets (power packs and stator) then you need to change them. Simple. The retifier checks are listed in the manual as well. I believe there is an ohms and voltage test as well.

 

[88seville100]

Re: Evinrude 225 getting stuck around 3000 rpm

Ok so I did test the correct wires for the stator to the power pack. I am hesitant to replace the stator because although the ohms were low, the voltage was within spec. And with that stator being around 350.00 I would like to use the old one if I can.

I may pick up one power pack and see if that fixes one side before I buy both. It still seems like something else could be the issue though. Very weird to me that 6 out of 6 cylinders are all reading 3 volts.

 

[88seville100]

Re: Evinrude 225 getting stuck around 3000 rpm

Another update for tonight. I took the flywheel off and found 4 of the magnets were not glued on anymore. They were just sticking with just their magnetic strength. I dont think that was causing my problem since the stator tested good, but I fixed the magnets anyway with some jb weld. I will put it back on tomorrow and see if there is any difference.

 

[88seville100]

Re: Evinrude 225 getting stuck around 3000 rpm

So i put the repaired flywheel back on and no change. I ordered a power pack today. Any of you guys have anymore advice?