Goo under stator coils

[seabird89]

I have some goo under the two larger stator coils and it looks like maybe the coating of those larger coils is melting. I know I can test the resistance of the wires coming out of those coils and also the peak voltage when cranking (although I don't have a DVA or peak meter).

Could this be the reason I cannot go past 4000 RPMs?

If the stator is bad/melted, is the rectifier also suspect? Is there a test for the Reg/Rectifier?

 

[F_R]

Those are the charge coils--that is charge as in charge the ignition system, not charge as in charge the battery. Usually the first sign of trouble is hard starting. Whatever, you need to replace it before it lets you down. The rectifier is for battery charging. Yes it can be tested. Is it a water cooled rectifier/regulator, or is it a rectifier only?

 

[seabird89]

I haven't had any issues hard starting, just rough idle and not going above about 4k RPM at WOT.

I don't know if my regulator/rectifier it is water cooled, but it is for an 89 OMC looper 140 90 degree. Part number 583689.

http://www.crowleymarine.com/parts/14182.cfm#15558

 

[seabird89]

Funny thing is, the ohms testing shows that the stator is good. I'm borrowing a peak multimeter from my brother-in-law to see if I can test the output while cranking, but if that tests good, what should I do?

I am not 100% sure that the residue is not from the old stator which was replaced years ago...

 

[seabird89]

PS the ohms test was 964 ohms and neither pin was grounded.

 

[F_R]

I considered it may have been from an old stator. But you convinced me otherwise when you suggested it being melted.

 

[seabird89]

I went ahead an tested the orange and orange/black stator wires, they were within spec. I did not see a test in my manual for the large yellow wires coming out of the stator.

I decided to test my timer base, and I found that one of the pins was out of spec for the ohms test. Connecting between the middle pin (Pin E) and Pin A of the 5 pin connector tested at 14 M ohms, the other pins all tested with in spec at around 45 ohms. So I guess I need a new timer base? Is there any other test I should perform before plunking down $300 on this part?

Also, I took some pictures of my stator, and although it tests OK, it looks a little melted, what do you think, am I seeing things?

 

[seabird89]

So does the stator look melted?