Oki MPS-200 Spark Unit


Information and questions on GL1100 Goldwings (1980-1983)
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Kramer
Posts: 2
Joined: Thu Feb 06, 2014 8:42 pm
Location: Ellwood City, PA
Motorcycle: 1980 Honda GL1100 (55K miles)

Oki MPS-200 Spark Unit

Postby Kramer » Thu Feb 06, 2014 9:14 pm



I have a 1980 GL1100 with 55K miles on it. The spark ignitor is bad and I need a new one. I know it's bad because it burnt out and leaked. Problem is that I can't find a new OEM part. I've seen some that are used on Ebay, but not sure how big of a gamble that is. I really don't want to buy aftermarket. This is a fairly common problem from what I've seen, but there doesn't seem to be much info on the subject. Anyone have any advice with these things? Would it be a huge risk to buy used? What are your thoughts?



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virgilmobile
Posts: 7663
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Oki MPS-200 Spark Unit

Postby virgilmobile » Thu Feb 06, 2014 10:34 pm

Question....do you now have no spark on 2 cylinders.???
Both of my 1100's had modules that looked like you described.It's common and usually has no affect.
On both of mine the spark was OK.I simply carefully scraped the loose stuff out and filled it back with silicone.
That black goo is just that...a 34 year old moisture sealing compound.Nothing more.
If you have lost spark on 2 cylinders,swap the modules.If the no spark follows the change then replace it .
Verify it's bad before replacing it.If you do,replace it with one from the same year or at least the same part number.
I think there may have been a change in the module as some ignition coils use a ballast resistor and some did not.
If I recall,one has a red plug and the other a black plug.

Let us know what happens...I normally see corroded pulse wire connections to the left over the battery box before a bad module.

Kramer
Posts: 2
Joined: Thu Feb 06, 2014 8:42 pm
Location: Ellwood City, PA
Motorcycle: 1980 Honda GL1100 (55K miles)

Re: Oki MPS-200 Spark Unit

Postby Kramer » Thu Feb 06, 2014 11:07 pm

Here is what happened. Maybe I'm on the wrong track. I bought the bike and it needed a new battery. I bought a battery and put it in to ride it home. Within the next week the bike was having a lot of trouble starting and soon was completely dead, like if I left the lights on in the car for a day. I would hear it like it was getting some power when I hit the starter, but no spark. When winter hit, I took the tank and seat off to take a better look (and also get it ready for it's new paint). When I did I notices that the guy before me had tin foil wrapped around the spark ignitor and the goo was all leaked out. I figured that when I unwrapped the tin foil and moved it around that it just gave up the ghost. I'm going to retest the battery again, but I'm sure that there is not problem there. So that goo is just to keep moisture out, that's all? Wonder if moisture got in it, would that cause it to act up? Are both modules interchangeable?

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702scottc
Posts: 252
Joined: Tue May 15, 2012 12:12 am
Location: Las Vegas, Nevada
Motorcycle: 1980 GL1100 Interstate (sold)
1990 GL1500 Aspencade (sold)
2005 GL1800

Re: Oki MPS-200 Spark Unit

Postby 702scottc » Fri Feb 07, 2014 1:13 am

Yes, they are interchangeable. I took 2 off a wrecked 1983 Interstate and put them on my 1980 with no issues about 5 years ago. Just clean the old sealant out and clean them with contact cleaner real good and use clear silicone to seal them up again. Like the previous post stated, swap them around and see if the issue follows. If it does then just get a couple used ones from ebay or wherever. Be sure and check the coils as well, I found one of mine cracked and it would miss fire anytime I washed it or rode in the rain. Also be sure and clean all the connectors and use dielectric grease on them. You can upgrade the stock coils to a coil pack from a 1998 Dodge Neon, I did this a couple years ago and you won't believe the difference in how it runs and starts. If you look thru some earlier posts you'll find the conversion instructions. Easy to follow and far cheaper than oem coils.

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virgilmobile
Posts: 7663
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Oki MPS-200 Spark Unit

Postby virgilmobile » Fri Feb 07, 2014 8:09 am

Everything he said. :D plus one thing.
You mentioned it was like the battery was not cranking well.
After you get it going again,scrutinize the charging system.
Get anal about it.The bike is capable of keeping the battery properly charged if all the known issues are addressed.
The battery must be operating within the 13.2 to 14.4 volt range under running conditions.
While driving the bike.if battery contact volts drop into 12.5 volt or over 14.6 volt range,there's something wrong.
Been there done that.Never left me stranded.

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David-Mantle
Posts: 87
Joined: Thu Aug 08, 2013 2:33 pm
Location: Grimsby , England - United Kingdom
Motorcycle: 1983 GL1100AD
1980 CB400N

Re: Oki MPS-200 Spark Unit

Postby David-Mantle » Sat Feb 15, 2014 12:31 pm

The CB900/750 used the same part. The CX500 used one with the same values but the wires are shorter and only fit when mounted at 90 degrees to the GL1100 ones - I know cause mine run on these and I bought a pair second hand for only £20 of ebay.
Just a thought - hope it helps.
The only silly question is the one you don`t ask. Everything else is game.

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David-Mantle
Posts: 87
Joined: Thu Aug 08, 2013 2:33 pm
Location: Grimsby , England - United Kingdom
Motorcycle: 1983 GL1100AD
1980 CB400N

Re: Oki MPS-200 Spark Unit

Postby David-Mantle » Sat Feb 15, 2014 1:42 pm

David-Mantle wrote:The CB900/750 used the same part. The CX500 used one with the same values but the wires are shorter and only fit when mounted at 90 degrees to the GL1100 ones - I know cause mine run on these and I bought a pair second hand for only £20 of ebay.
Just a thought - hope it helps.



http://www.ebay.co.uk/itm/NEW-IGNITION- ... 3a82bc3042
The only silly question is the one you don`t ask. Everything else is game.

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RBGERSON
Posts: 2625
Joined: Tue Mar 09, 2010 7:57 am
Location: SCOTTSDALE, AZ
Motorcycle: 98 SE GL 1500
had every year from 75 to 83

Re: Oki MPS-200 Spark Unit

Postby RBGERSON » Mon Feb 17, 2014 8:19 am

I have several spark units that have been resealed and work great.. $30 for a pair $20 for one. But suspect your charging system is bad. First get her started and use a meter to test the charge at the battery at idle shoudl be about 12 at 3,000 rpm's around 13.5 or so. If not check all the connections battery the three yellow wire's connector, the cables internally and their connections to the bike. If that's all good then your stator maybe be toast..check the output while running at the three yellow wires should be all the same about 40 to 50,
connect a volt meter with a 100V AC scale across any two of the three wires coming from the stator (back of the engine). With the engine running you should see around 40-50VAC across any combination of the three wires. If all three combinations of any two of the three wires shows that voltage then the stator is okay. If any pair of the yellow wires is a good bit lower than the other two combinations you have a defective stator.

OR Engine running and probing through the insulation/connection on the first stator wire. Over 4 volts is normal. Raising the engine rpm should bring it up a bit more and 4-5 volts is good.
Probing the second wire. Again over 4 volts? Last wire. Adding up the total voltage for the three wires gives me under 12.5+ volts = good; under not good. Over 12 volts is needed to charge a 12 volt battery, and 13-14 volts is to be expected from a healthy Goldwing stator.

and/or

SHUT THE BIKE OFF set the meter to check continuity Connect the meter leads to any 2 stator leads. The reading should be 0.5 maybe 0.6 or 0.4 If it reads the same as when the meter leads were not connected to anything, then there is no continuity - an òpen circuit` = bad stator.


HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB


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