powerpack problem

[wayne 15]

I have a 1971 115 evinrude the powerpack has been changed and i want to know if anybody has heard of disconecting the ignition saftey circuit when changing a powerpack? My promblem is it quits when the motor comes up to temp. It will restart after you let it sit for 15 or 20 minutes. I have checked everything according to my manual every checks out ok. I brought it to a guy that works on old outboards and he couldn't find anything wrong either. Help.

 

[OBJ]

Re: powerpack problem

Wayne....not sure of your year. Post the model number please. 115's weren't offered in 71'.<br /><br />Thanks.

 

[R.Johnson]

Re: powerpack problem

Wayne: As pointed out, your engine can't be a 71, 115. I am going to assume you have an engine with the battery CD ignition system. First off, tight electrical connections are a must. Check the ground connections at the engine, and use nuts on the battery posts, not wing nuts. You need a known good battery, not one that may have a cell starting to fail. When changing the pulse pack you need to be sure you have the correct rotor for that pack, and for insurance change the coil, and, yes! you can take the clipper circuit out of the system. There is a anti-reverse spring that is held by friction around the crank shaft, it can wear in two, and ground out the system. Check the resistance on the sensor leads, they should be 4 - 6 ohms, while doing this pull on the sensor leads to check for a break. This is not the easiest system to trouble shoot if you are not famialar with it.

 

[Joe Reeves]

Re: powerpack problem

Wayne.... The following may be of interest to you.<br /><br />(Battery Capacitance Dischage Powerpack Test)<br />Various OMC Engines - 1968 to 1972)<br />(J. Reeves)<br /><br />Purchase a small 12v bulb at your local automotive parts store (the 12v bulb is to look like a flashlight bulb, not a headlight bulb). Solder two wires to that bulb, one to the side of the bulb (ground), and the other to the positive point. <br /><br />Remove the spark plugs. With the key in the on position, make sure that you have 12v going to the pack at the terminal block (purple wire). Now, connect the ground wire from the bulb to any powerhead ground. Connect the wire from the positive point of that bulb to the powerpack wire that is connected to the coil wire on the terminal board (blue wire). <br /><br />Crank the engine and observe that bulb closely (CLOSELY!). If that bulb glows even the slightest bit, the powerpack is okay. It may be a very dim glow... just so it glows! If it doesn't glow, the pack has failed. <br /><br />Keep in mind, that type powerpack (Battery Capacitance Discharge) demands a top notch battery of at least 70 amp hours. Any less will, in time, cause powerpack failure.

 

[Franki]

Re: powerpack problem

Thats some excellent tips Mr Joe Reeves.. <br /><br />I've made a note of that for my Johnson...<br /><br />what exactly is battery capacitor discharge though and how does it differ from normal CGI???<br /><br />rgds<br /><br />Franki