Re: '98 50HP Johnson won't idle
Advancing the idle speed is masking the symptom, not repairing the problem.<br /><br />Most likely, you are running on one cylinder-only.<br /><br />1. Check spark, on both. Should jump 1/2" with strong blue spark.<br /><br />2. Check compression on both. Should be over 100 and very close to each other.<br /><br />If both of those are OK, you probably have a fouled carburetor, for that cylinder.