IGNITION UPDATE OR NOT?

[wallikller]

I currently own an 115593e it usually runs great until, recently it started misfiring at no wake speed Then. also at WOT it loses rpm about( half) you can feel it cut in and out .new coils plugs 4yr,, old cd unit check most things,
all but the tests with the neon test light.

I wondered if it was worth the trouble of updating the ignition from 75 to 78. 80 I don't know just wanted some input or ideas on the reliability of different years.


THANKS ANYTHING WELCOME

 

[Scaaty]

Re: IGNITION UPDATE OR NOT?

I currently own an 115593e


Just what the heck is it

 

[wallikller]

Re: IGNITION UPDATE OR NOT?

sorry, guys its a 1975 115 evinrude,I was wondering if other years of ignitions were better or if I fix this current one again it will stay fixxed.I am willing to change it to an1978-86 ignition if its worth it.

THANKS

 

[ezeke]

Re: IGNITION UPDATE OR NOT?

I run a 1976 115 which I have had a long time. It has never seen fresh water.

When I have had similar problems to yours, I started by disconnecting every ignition wire on the motor, cleaning the contacts, sanding the contact points, reconnecting and sealing with liquid tape. Emery boards help. Don't forget the contacts on the power pack.

Run your compression check and then the spark check.

The symptoms indicate that you may have lost or are losing a spark coil. Bad wires or a grounding problem could mimic that. A bad spark coil can kill a power pack.

 

[wallikller]

Re: IGNITION UPDATE OR NOT?

Thanks,I changed the coils,powerpack and the plugs last season,could the power pack be bad already?I never changed the timer base I thought that was it because cyl1-3 go out then somewere in the middle of a test they will start working again.I am ready to change everything out to start off with new parts.

 

[ezeke]

Re: IGNITION UPDATE OR NOT?

That is exactly the wrong thing to do. The right thing is to clean up the wiring and then follow the diagnostics in the service manual. That way you only replace what, if anything, is bad. I have never replaced a power pack on my 1976.

 

[wallikller]

Re: IGNITION UPDATE OR NOT?

ok Thanks for the help I will post later after I check things out according to the manual and I have the omc manual,you guys were right about it being better.

THANKS

 

[wallikller]

Re: IGNITION UPDATE OR NOT?

HI everyone! I checked out everything but the tests I need to do with the stevens voltage adapter,I am waiting for it to come in.The ohms on the stator the sensors and the coils checked out ok.The spark on cyl.1-3 are still going in out .I am not sure what kind of tach I need it does'nt seem to be right on the dash tach or my meter tach,what kind does everyone else use. Just need more info thanks.

 

[wallikller]

Re: IGNITION UPDATE OR NOT?

oh I am sorry I did a comp check 110 all cyls.I also fixxed a few wires.thanks for all your help.

 

[ezeke]

Re: IGNITION UPDATE OR NOT?

Did you try swapping the coils to see if the problem follows them or not?

 

[wallikller]

Re: IGNITION UPDATE OR NOT?

Hi, Ezeke no I did'nt try that I will though.I did'nt try it because it was1-3 not sparking I thought that if two were not firing together it was more likely the cd box or a sensor coil .

Thanks

 

[wallikller]

Re: IGNITION UPDATE OR NOT?

Hi! everyone Ezeke tried the coil change it did not change anything so I guess I am waiting for the voltage adapter to check peak voltage seems like a good test.

THANKS

 

[ezeke]

Re: IGNITION UPDATE OR NOT?

Sounds good. I will be very interested about the outcome. What spark plugs are you using?

BTW, If you look at the picture called "aft view" 5-47 around page 5-22 in the manual, you will notice a grounding wire between the starboard cylinder head and the bracket that holds the coils and power pack. It is important.

 

[wallikller]

Re: IGNITION UPDATE OR NOT?

HI everyone I cheked the ohms on the triger sensors it giving 8.20 in the manual thats normal,but on rapair they said in the late 70's that it was changed to 10-20 does that mean its bad now with that reading?

THANKS

I am using ql77jc4

 

[wallikller]

Re: IGNITION UPDATE OR NOT?

HEY everyone! I finaly got my testers in.The charge coil tesed at 0.678 ohms ,345v The sensor ohms 8.48 thats low according to new specs,but thats were thing don't seem right ,the sensor voltage 1-3 1.983 2-4 2.890 and the pack output isn't anywere close 1-2.967 2-1.997
3-2.965 4-2.890 I don't know what to make of these numbers.This meter is a fluke 88 and its auto ranging,got the stevens pva-1 I got these so I whould be sure to get a good test.

ANY HELP IS WELCOME THANKS

Help

 

[wallikller]

Re: IGNITION UPDATE OR NOT?

Hi everyone! anybody have any ideas on these numbers?

 

[wallikller]

Re: IGNITION UPDATE OR NOT?

Hey everyone I changed the pack seems ok going out today to try it out hopefuly,its too hot not to.I can't believe nobody had an opinion on the numbers I got o'well.

THANKS

 

[wallikller]

Re: IGNITION UPDATE OR NOT?

HI all finaly got on the water runs great at mid-high range but it still stalls when in idle waiting to dock,going to do the carbs.

Thanks