No spark. Timer Base?

dukhnter8

Seaman Apprentice
Joined
Jun 29, 2007
Messages
43
This is a great site and has been lots of help. But here's my problem:

I'm getting no spark in my 1977 55hp Evinrude. I bought this motor off a guy (preacher, so hopefully he wasn't bsing me), who said the only problem he had was flooding. He would run for awhile then take the motor out of gear and when putting it back into gear it would flood and be hard to start.

I had this motor running alright last fall and stored it for winter. This spring I put in a new impeller and rebuilt the carbs and rebuilt the starter. I had it running in a tub in my driveway after all that and it seemed to run good. Started right up after the new starter and I was going to run it on a lake. I get to the lake and it won't start at all, no firing. I tried changing the plugs on the lake to no avail. Take it home and start diagnosing, to get to no spark. It is getting gas and the gas is new and has stabilizer in it from a good gas station.

So I go through part of the seloc troubleshooting part and get to the timer base and sensor assembly part and it seems like that is the problem.

Is this common or are there other ideas? I don't want to change parts without knowing for sure or if that might not be what it is. I disconnected the kill wire and no spark, there in throught the harness, most of the other tests I did seemed fine. I will go through the rest of the tests tonight.
 

F_R

Supreme Mariner
Joined
Jul 7, 2006
Messages
28,226
Re: No spark. Timer Base?

I'll defend the preacher. He wasn't bsing you, he just misdiagnosed the problem as flooding when it really was an ignition problem. Happens all the time, people tear into the carburetors when they should be looking at the ignition.
 

dukhnter8

Seaman Apprentice
Joined
Jun 29, 2007
Messages
43
Re: No spark. Timer Base?

So could the timer base and sensor assembly be causing the no spark or earlier issues?
I'm pretty sure the preacher wasn't bsing me, he let me know the problems and gave me a really good deal on the motor.
 

BigNiner19

Petty Officer 1st Class
Joined
Jul 1, 2006
Messages
234
Re: No spark. Timer Base?

did you check all the power connections first, any corrosion from sitting in storage? Did it turn over, but just get no spark?

How's the harness look?

Cory
 

dukhnter8

Seaman Apprentice
Joined
Jun 29, 2007
Messages
43
Re: No spark. Timer Base?

I have checked most connections that I can get to easily.
It turns over good, but just no spark.
I had it running good a week ago, but now it won't start.
I haven't looked inside the control box but otherwise the harness looks ok.
 

jay_merrill

Vice Admiral
Joined
Dec 5, 2007
Messages
5,653
Re: No spark. Timer Base?

If you have no spark to any of the cylinders, I would suspect a power pack or stator. My experience with timer bases is that the not all of the sensors in them usually go bad all at the same time.
 

jtexas

Fleet Admiral
Joined
Oct 13, 2003
Messages
8,646
Re: No spark. Timer Base?

You disconnected the kill wire at the powerpack and still no spark? That ruled out the wiring harness and control box.

Did you try it with the rectifier disconnected?
 

dukhnter8

Seaman Apprentice
Joined
Jun 29, 2007
Messages
43
Re: No spark. Timer Base?

I have a list of things to check such as the harness and disconnecting it and searched some old posts for info which I think you name is on them.

I will do some more testing and report back what I find. Thanks
 

BigNiner19

Petty Officer 1st Class
Joined
Jul 1, 2006
Messages
234
Re: No spark. Timer Base?

If you have no spark to any of the cylinders, I would suspect a power pack or stator. My experience with timer bases is that the not all of the sensors in them usually go bad all at the same time.

Good call here....
 

dukhnter8

Seaman Apprentice
Joined
Jun 29, 2007
Messages
43
Re: No spark. Timer Base?

Did some testing and it seems to be the power pack.
kill wire was disconnected and no spark still.
harness was disconnected and no spark still. I'll have to try with the rectifier disconnected and see.
It turns over good, but no spark. i had all the connections clean and shinny, I had a problem with the starter and had to have it rebuilt but cleaned everything up before figuring out it was the starter, so I took it to a rebuild shop and he knew right away what the problem was and had it fixed. I had it running once after that then the no spark problem.

I have a new power pack ordered and will see if that's the problem. Thanks for the help.
 

dukhnter8

Seaman Apprentice
Joined
Jun 29, 2007
Messages
43
Re: No spark. Timer Base Update

Re: No spark. Timer Base Update

Put a new power pack in and saw the rectifier was shot so repalced that with a used one and I have very good spark now. WIll try to get the boat out for a run but it might not be for a week or two.

But I have spark once again, Thanks for the help.
 
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