no spark

ripper

Cadet
Joined
Sep 12, 2003
Messages
6
I have a 1977 Evinrude 70 hp. With help from you folks I fixed the last problem (reed valves) . but now I have a new problem. Last weekend I took her out started fine idled fine then just quit. Checked spark none on any plug wire. what do I check first? thanks for the help!
 

rickdb1boat

Supreme Mariner
Joined
Jan 23, 2002
Messages
11,195
Re: no spark

Check the kill switch first. If you have a lanyard on the remote control, makes sure it's in place.
 

jeff7599

Cadet
Joined
Mar 25, 2003
Messages
19
Re: no spark

This happened to me last week. Mine was caused by the stator. I used the Climer shop manual, and solved it in about 30 minutes. Heres the order to check:<br /><br />1. kill switch: engine turns off by grounding out the igntion. Doesnt matter if you turn off the engine, or pull the lanyard. Look for a single black wire on the engine. and unhook it. Check for spark. <br /><br />2. Check stator: Look for 2 pin harness coming from flywheel on top. Check the resitance between the two pins. No resistance equals bad stator. Also use an analog voltmeter and check the AC volts on those two pins as you crank the engine. No volts= bad stator.<br /><br />3. Check coil unit thingy: I always forget its real name. Its just below the stator. Check resitance between middle pin, and four surrounding pins. Should each be about 40-50 ohms. <br /><br />Im not a mechanic, just another weekend do it yourselfer. Mine was the stator. Shop guy said its probably only one part of the system. My stator cost me $175 and was not refundable. SO I took mine to the shop, and compared the 2 side by side with an ohmeter to make sure. Oh yeah, this took me forever. THE FLYWHEEL NUT ON MY 88 SPECIAL USED A 1 3/8" socket. Hard to find this size. You will also need to use a harmonic gear puller to get the flywheel off. You can rent one at a auto supply store like Autozone. Good luck. I recommend buying the CLimer book.
 

ByteWalker

Seaman
Joined
Aug 18, 2003
Messages
57
Re: no spark

Just a little input about the puller... I just recently had to get one to pull the flywheel (Harmonic Balancer Puller) and found it at a local auto parts store for $11.00, so it wouldn't be worth it to 'rent' one. You may need to use it again... they're very handy to have. :D
 
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