1978 50 hp evinrude spark plugs fouling

wavescrashing

Recruit
Joined
Jul 4, 2004
Messages
1
I bought my boat used without a manual. Everything runs good but for only like 5 minutes! I have narrowed it down to spark plugs because what I can do is put brand new plugs in and I get that 5 mins of running good. Would someone tell me the exact right model and make of the plug that will give me the right performance for longer than 5 mins? Would greatly appreciate a comeback. Thanks.
 
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