CDI test procedure question for 1988 johnson 200

[anauburnfan]

Re: CDI test procedure question for 1988 johnson 200

I have the old water control valve and hoses and diaphram. Thought about switching before I bought these parts, but it added to the cost to buy the new covers. Trying to keep expense low until I figure out for sure whether this motor wants to run correctly or become an anchor. I just had the bright idea to check the parts diagram to figure out the order of the cup and seal and it shows the way you describe it should be. Seems like the cup may also help keep the seal seated correctly too. I don't have a temp gage just horn so I guess I will need to get the old cups out without tearing anything else up. It was aggravating enough just getting the old seal out it was stuck in there pretty good. I actually left the seal on starboard side since it didn't look bad. Guess I should go ahead and change it out now that I know cup is in backwards.

One thing I did notice on the starboard side was that the little hole in the diaphram didn't match up with anything on the cover. In other words it was covered up unlike the port side cover which I could tell would allow some water to pass through. Since you have the newer style I guess you may not know if that is normal, but if anyone else cares to confirm this that would be great.

 

[anauburnfan]

Re: CDI test procedure question for 1988 johnson 200

Final (hopefully) update on this thread. I could not remove the old thermostat cups. It is like they are glued in there, so I just left them that way. Took out to water this weekend. Other than being very cranky about cranking up right away, I could tell a major improvement in ability to run at idle. I still had occasional stall when trying to go from idle forward to idle reverse, but overall confidence docking and loading without running something over is greatly improved. I guess the presence of thermostats in and older engine can make a big difference in idle performance.

I think I will try a decarb and see if that helps even more and maybe it will help cranking in water. That has always been a minor problem, but seemed a little worse this weekend. I will check the forums for guidance on that.

Thanks for all the helpful advice on getting this part of the problem improved.