Checking compression on 115 Johnson

[Jeff2012]

I have a compression tester. Does anyone know where the coil wire is to disconnect so the motor won't start when I crank it?<br />thanks.

 

[ezeke]

Re: Checking compression on 115 Johnson

The coil wire(S) go to the spark plugs. <br /><br />But,take all of the spark plugs out before doing the compression test.

 

[reeldutch]

Re: Checking compression on 115 Johnson

when you take off the lanyard you will kill the spark.<br />than you can do a compression test without damaging anything.

 

[Joe Reeves]

Re: Checking compression on 115 Johnson

Remove "all" of the spark plugs when checking the compression.<br /><br />Leave the key in the off position. Crank the engine by using a small jumper wire between the battery terminal of the starter solenoid and the 3/8" nut on the solenoid that energizes it (not the 3/8" ground nut).