9.9 CDI failure - It's ALIVE ....

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9.9 CDI failure - It's ALIVE ....

Postby Old PDQ Message Board » Mon Apr 26, 2004 6:51 am

9.9 CDI failure - It's ALIVE ....

Posted by Roger Ford on July 24, 2003 at 04:36:00:

Just a quick thanks for the help and comments. At Dan Hoffman's suggestion, I
purchased both the stator ($240) and the CDI unit ($168) from boatune.com
The hardest part is removing the flywheel, but an inexpensive ($16) automotive
"harmonic balancer puller" worked fine (but it does take a lot of strength to
break her loose)

Standing on my head, I was able to remove and replace both components on the
port engine while in the engine well. As mentioned, be careful of the woodruff
key in the flywheel (I think I'll have a spare on hand)

Put it back together and it started right up !!!
Now I'll try to determine which component was the culprit - stay tuned

Roger
s/v Kokomo

Follow Ups:

Re: 9.9 CDI failure - the final analysis Roger Ford 17:08:35 07/27/03 (0)
Re: 9.9 CDI failure - It's ALIVE .... Chet White 20:56:12 07/25/03 (0)
Re: 9.9 CDI failure - It's ALIVE .... Dan Hofmann 03:50:15 07/25/03 (0)

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Re: 9.9 CDI failure - the final analysis

Posted by Roger Ford on July 27, 2003 at 17:08:00:
In Reply to: 9.9 CDI failure - It's ALIVE .... posted by Roger Ford on July 24,
2003 at 04:36:00:


Now that the engine was running with both a new CDI and a new stator, I
substituted the old CDI for the new and the engine still started... The final
anaysis is that the stator was the culprit. I'll have one of each on hand from
now on ....

Follow Ups:

Re: 9.9 CDI failure - It's ALIVE ....

Posted by Chet White on July 25, 2003 at 20:56:00:
In Reply to: 9.9 CDI failure - It's ALIVE .... posted by Roger Ford on July 24,
2003 at 04:36:00:


Congratulations Roger,
Thats a real accomplishment! I've changed a CDI in the starboard well but never
the port

If you have an analog ohm-meter you can check the values of both the stator and
CDI against the shop manual to find the culprit. Its worth doing so you can keep
the good part for a spare. The main thing to check on the stator is the
resistance of the two spark coils

Let us know the findings

Thanks,
Chet

Follow Ups:

Re: 9.9 CDI failure - It's ALIVE ....

Posted by Dan Hofmann on July 25, 2003 at 03:50:00:
In Reply to: 9.9 CDI failure - It's ALIVE .... posted by Roger Ford on July 24,
2003 at 04:36:00:


Congratulations Roger. I admire your ability to do all that work upside down. I
changed one out in the cockpit one time but never in the engine well. At tip for
the flywheel. Put torgue on the flywheel puller bolt then tap that bolt with a
hammer. Take another 1/2 turn and tap again. That littleshock sometimes breaks
it loose.

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