1996 150 Evinrude stator test

[SparkieBoat]

I just got in a new CDI stator. 173-4981
The old stator test were on the 6 wire plug from the stator to the power pack- Brown/Black - Brown/white = 280 at idle and did not change more than a few volts at WOT. orange/black - orange = 20.5 maybe 1-2 volt fluctuation through out RPM ranges. Brown/yellow - Brown = 292. Orange wires going to coils were all 280-290 never going above 300 at all RPMs. same readings with rectifier disconnected. The new stator readings are- Brown/black - brown white = 289 with only a few volt gain to WOT the Orange/black - orange = 20.5 with little change at WOT. the Brown/yellow - brown = 280 with only a few volt gain at WOT. the brown wires should be at 400 V at idle according to the CDI guide I read. the Orange wires from PP to coils were all around 212 at idle then up to 228 at WOT nothing passed 230. CDI guide says they should be 150+ at idle then rise rapidly with RPM increase to 300-400 V. all readings were the same with Rectifier disconnected.
My question is have I gotten a bad stator from them or is there something else that I am missing??? Before I called the supplier I wanted to be sure.
Thanks for any input and I have included the link to the CDI guide. http://cdielectronics.com/downloads...oting Guide 2009 - OMC 6 Cylinder Optical.pdf
And the flywheel magnets looked ok to me. I can post some pics if you need.
Thanks again , Sparkie

 

[daselbee]

Re: 1996 150 Evinrude stator test

It is probably your meter itself.
The circuitry for the DVA adapter along with the meter you are using is giving you a different reading than the CDI testing specs indicate as the norm.

When you are measuring the ignition voltages, you are attempting to measure a high frequency AC voltage with a DC peak reading adapter and meter combination. For instance, a digital meter's sampling rate can affect the readings you get with any particular DVA adapter. Or the value of the RC constant in the DVA adapter can affect the reading. That's electrical engineering basics...

Notice that when specifying the voltages they spec out, they always state EXACTLY what brand and model meter and DVA adapter they used to take the measurements, because the measurements can vary.

Your original stator was not bad, in my opinion.

The key to using DVA adapters is to take readings and set that as YOUR normals; your stake in the ground. Then, any variance from your normals may indicate a failing component.

 

[surrender]

Re: 1996 150 Evinrude stator test

But if you set your own "normals" what if the part was failing already? Whats the point of testing to check for a faulty part? By your method you would have to test when new and use those values in the future. Plus, his numbers were so far off what they should be something else is going on. Could be using the meter incorrect but to have to use the identical meter used by CDI make no sense.

 

[daselbee]

Re: 1996 150 Evinrude stator test

Yeah yeah yeah,....Ok whatever. Take it or leave it.
It is the truth though.

 

[SparkieBoat]

Re: 1996 150 Evinrude stator test

well with the first stator test (the orange wires going to the coils from the PP) the voltage never went up like it was supposed to. the fact that the voltage was the same at all RPM ranges, seems suspect, even if my meter is not accurate. I will try another meter with the same DVA, tomorrow to see what happens. My understanding of a DVA is they are all the same, there are even some instructions on how to build your own. But I do not know a lot about that kind of stuff. with the new stator there is an increase along with the RPM increasing, thought it is minimal and no where near what CDI calls for. from 150+ quickly increasing to 300-400, thats double or so. My meter only showed an increase of about 20 volts. there is something wrong with my motor for sure, it idles and cranks perfectly, and does not miss or skip but seems to be lacking about 1/3 of its HP, it "bogs" out slightly at WOT. When testing the motor before the stator change, I held it at WOT for about 5 mins, I had 3 very powerful surges that lasted about 2 - 5 secs. I have not been able to repeat that though. I am willing to do whatever is needed to fix my motor, but would prefer to not spend money unnecessarily. I have attempted every possible test that I could find to do. I believe that I have eliminated any fuel issues (new fuel pump) and compression is good, new plugs 2X. all coils seem to fire properly. so I think I am down to the stator and the Power pack, but nothing seems to point to the PP, as all readings are the same. the only other possibility could be the rev limiter problem with the PP mentioned in the CDI guide, and it does seem to bog out at around 5K RPMs, but as I said it does not seem to be missing or skipping, I was told that when the rev limiter kicks in there is a noticeable skip/miss. so a weak stator seems to be my obvious problem..but everything is not always the obvious. I appreciate any input. thanks again Sparkie

 

[ezeke]

Re: 1996 150 Evinrude stator test

See: http://cdielectronics.com/InstallSheet/173-4981.pdf

It says "Connect DVA meter to each set of brown wires and do a running test. AT NO TIME SHOULD THE VOLTAGE EXCEED 400v."

 

[SparkieBoat]

Re: 1996 150 Evinrude stator test

yes you are correct...I was going by what I read in the diagram on page 3 of the guide that i posted above. It is no where near the 400 and is supposed to go above 300.
does the fact that my old stator did not increase voltage with RPM increase and the fact that my new stator only slightly increases voltage with the orange wires running to the coils with no change in the voltage at the brown wires mean anything?? I assume that it is supposed to increase to over 300.

 

[SparkieBoat]

Re: 1996 150 Evinrude stator test

maybe it is the regulator circuit in my Power Pack???

 

[w2much]

Re: 1996 150 Evinrude stator test

Sparkie, just my two cents. Just gained several hundred RPM with my new powerpack, runs like a charm. Have followed your post and problem for a while now. I called an E rude tech and told him my symptoms and he said power pack right off. Purchased a brand new one on ebay for 125.00. He also said 550.00 to come and diagnose my electrical system and install the PP if that was what I chose to do. I figured I could replace the entire ignition system (through eBay) for that price. I would have, had the PP not been the issue. I doubt you got a bad stator. 1995 150 EXEOM.

 

[daselbee]

Re: 1996 150 Evinrude stator test

From the following site...plenty of other refs to the same issue:

http://outboardparts.com/mercury/troubleshooting/troubleshooting1.htm


"II. Peak Reading Voltage Measurement

A. DVA (Peak Reading) Voltmeters - Specialty meters for measuring average DC voltages and AC voltage spikes on ignition systems. Some of the more common meters include the Stevens CD-77, Merc-o-tronic and ESI meters with DVA ranges.

B. Multi-use Voltmeters with DVA Adapters - Analog or digital VOM (volt, ohm meters) using a plug-in DVA adapter to measure DVA voltages. Accuracy varies quite a bit between manufacturers and types of meters when taking DVA readings.
The CDI/Rapair 511-9773 peak adapter is highly recommended for use with all
Fluke meters. "

 

[jonesg]

Re: 1996 150 Evinrude stator test

peak meter for outboards, analog is just plain simpler to me.
http://cgi.ebay.com/ebaymotors/Mari...tZMotors_Automotive_Tools?hash=item58852b6447

 

[SparkieBoat]

Re: 1996 150 Evinrude stator test

just received a response from CDI e-mail support, (within 30mins) they say that if the stator is producing 150+ at cranking it is ok, they said that most high speed issues are with the power pack, and they suggest a new power pack, new grey inductive plug wires, and a new sensor. along with QL78YC plugs which I just put in.