no spark on chilean 115 rude

[ajforno]

Hello, I am posting from Viña del Mar, Chile.<br /><br />I am trying to repair a 1976 115 HP Evinrude. I am new at this, but seems it needs a power pack change since there is no way I can get spark at any cylinder.<br /><br />I disconnected the red wire harness and jumped the starter solenoid, and no spark either.<br /><br />I checked the stator (brown cables) with Ohnm meter, it reads no resistance, which I imagine is OK.<br /><br />I also checked, with the Ohm meter, the sensor windings and also show no resistance.<br /><br />But when I put the Ohm meter (on a dead engine) between the spark plug cables and earth, I shows isolation on cylinders number 4 and number 3, but it shows no resistance (the needle jumps on the Ohnm meter)on cylinders number 2 and 1. Could this prove that the power pack is the foulty piece?<br /><br />Thank you guys in advance, Andrés

 

[rodbolt]

Re: no spark on chilean 115 rude

Hello<br /> the pack cannot be tested with an ohmmeter.<br /> the brown to brown yellow wires from the stator or brown on some older engines should have resistance. without my manual here I cant give a specific but something less that 25 ohms or so I think. remember the stator is only a coil of wire. when you say no resistance I am assuming you found 0 to 2 ohms and not an open circuit.<br /> Good luck and keep posting

 

[seahorse5]

Re: no spark on chilean 115 rude

This might help.<br /><br /> http://outboardparts.com/troubleshooting/troubleshooting3.htm

 

[ajforno]

Re: no spark on chilean 115 rude

Thank you Rodbolt, what I meant by no resistance is that I did not find an open circuit on the windings, but yopu are right, it should have certain resistance since it is a coil, I did not measure it exactly, I just saw that the needle jumped, confirming that it was a closed circuit.<br /><br />I will read what Seahorse is suggesting me, and I will come back to you guys, after I learn a bit more.<br /><br />What I really do not understand is why I found open circuit between spark plug cable connection and ground on cylinders number 2 and 4, and I did found close circuit on cylinders 3 and 1. All this on a dead engine. As little as I know about this ignition, I realize that all cylinders should behaving the same on dead angine, but here I have different reading realizing the same procedure for each spark plug wire. May it be an indication that two of the ignition coils are defective?<br /><br />Andrés