very hard starting 1975 9.9

[rick101]

Hello everyone! and thanks in advance for your responses.

The compression is close to 80 on both cyl.
The carb was taken apart cleaned with solvent and blown dry with compressed air.
The ignition has to be in great shape since after 20 pulls as long as I don't let it idle to slow runs well. It does have hesitations when I open her up very quickly almost like it's not getting enough gas. Not really sure if this is also the same reason for the hard starting.

Yes I have adjusted the idle screw

But as long as I don't let it idle to slow everything else is smooth, even the top end is very strong.

Runs like a top so I'm out of ideas as to what the problem can be.

The only thing I can think of is maybe the reeds are not sealing properly?

Thanks all.

 

[tashasdaddy]

Re: very hard starting 1975 9.9

have you check spark? see the TOP SECRET FILE, carb settings. are you pumping up the primer bulb. turning throttle all the way up, using the choke first couple of pulls. what do your spark plugs look like? are they gapped at .030.

 

[Rick.]

Re: very hard starting 1975 9.9

I agree with what Td has said.

It would be nice if you had given us some history here. Is this a new to you motor or one that worked well a week ago? Has it been in storage for an extended period? With all so respect your asking for advice but not giving much info. to go on. Best of luck. Rick.

 

[rick101]

Re: very hard starting 1975 9.9

Thanks for all your responses,
I have had it just this year. When I took it over it did not run.
Then I cleaned everything under the flywheel, replaced the 5" nylon ring.
That they call a bearing.
The carb was rebuilt, and like I said when I do get it going it runs really hard.

New spark plugs,
I have also made sure that continuity exists between the wires at the points all the way to the end of the ignition wire.

Condensers seem fine, and yes I do see spark on the plugs when I check for spark.

ok back to what I see on the stator assembly.
When adjusting the points the stator still moves slightly, but just enough that it will in fact move the points adjustment

I be leave this is in fact be the problem, but I'm not sure how else to rectify the issue as I have already replaced the apparently only wearing item the stops the stator from moving out of play.

Cheers,
Rick

 

[Rick.]

Re: very hard starting 1975 9.9

http://shop2.evinrude.com/ext/index.aspx?s1=fac1e8a6cfddb0032d370445a79818f4

Have a good look here at the parts diagram for your engines magneto and verify that your not missing anything. If your points setting can change it would be difficult to get it or keep it running. Rick.

 

[rick101]

Re: very hard starting 1975 9.9

Thanks for the response Rick!

Well I took the whole stator apart again just to make sure everything was clean.
I masured the resistance between the ignition wire at the spark plug and the wire under on the stator that is the opposite end to the ignition wire.
Both 1 and 2 read 350... Is this good?
Condenser seems ok. I just get a little blip when I check them. So I guess that's on par with new ones since they do the same.
Not sure what else could be causing the lack of spark,
It's strange cyl 2 has a hard time to obtain strong spark, a dn cyl1 sometimes has a dbl spark.
Maybe I should just replace the 2 coils and change the points and condensers?

 

[rick101]

Re: very hard starting 1975 9.9

I anyone able to help?

 

[Rick.]

Re: very hard starting 1975 9.9

Boy I am stumped. I have no idea what would cause a double spark as you describe. Is there a chance you have the plug wires going to the wrong plugs? I really am at a loss. I would purchase a spark checker before replacing the coils. A spark plug checker will tell you about the strength of the spark. The gap is adjustable and your spark should jump 3/8 of an inch and look blue/white and be real snappy. They sell for under ten dollars. Rick.

 

[rick101]

Re: very hard starting 1975 9.9

Yes I have checked for spark, and I am not getting a consistent spark at all on cyl 2.

Possibly no spark at all.

Does this make any sense?
I am very sure I have been testing everything correctly.

I believe that points and condensers are well.
The charge coil looks good.
and It was running very hard when it did run, just did not idle very low.
and when I try to start it I have a very hard time.
oms meter reads 350 from the wire under the flywheel all the way to the ignition wires on both ends.

 

[Rick.]

Re: very hard starting 1975 9.9

I was cleaning and checking gap on the points of my 9.5 yesterday. When tightening down the points the magneto will turn ( if I let it). Is that what your talking about? If so just hold the magneto firmly so it can't move and make certain both points are set to .020 and clean as new. I don't know what your coil ohms should be but I did see a you tube video of a guy showing how to check coils. Did you not say you had new coils? Rick.

 

[rick101]

Re: very hard starting 1975 9.9

Thanks!

ok I have found the problem.
Nothing wrong with the ignition at all. All parts are good.
The startor is moving ever so slightly depending on where I am on the throttle.
I am able to move the startor place front to back and it's enought to allow a spart or not to. Probably keeps the points closed.
Now I have replaced the nylon bearing support but this issue still remains.
Maybe it's the casting this is in the center or the stator that is to loose.
Or do I need to replace the complete base stator?
This must be very expensive.

 

[Rick.]

Re: very hard starting 1975 9.9

rick101: I'm afraid the time has come to ask for even more detail. I think it is vital that we/you are very clear about defining your exact problem/remedy. I sent you a link before and have to ask now that you use the part names called up in the parts list. it is really important that you are giving and getting the right information. I already have a completely different picture of a stator in my mind than you seem to. Please have a look and try to explain exactly what parts your speaking of. I'll be away for the next 48 hrs. but look forward to getting back to find out your up and running. Rick.

 

[rick101]

Re: very hard starting 1975 9.9

Ok so the correct word is armature plate.

This plate has a brass pressed ring on the inner circle.
It appears that it might be excessively warn out and is causing excessive play.
There for the points are placed out of position depending on the throttle.