Cylinder miss fire

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Howdy,<br /><br />One of my 1999 Johnson 175 engines rpm dropped 500 from the other one at full throttle. I checked the engine cylinder to see if any miss fire and found one of the cylinders has no spark.<br />Could the spark plugs be the problem, because it came after I changed them?! <br />Help me.

 

[rickdb1boat]

Re: Cylinder miss fire

Could be a bad plug. Has happened before! Only way to know is change them out and give it a try.. Let us know how it goes... Are you running Champions?

 

[plus+]

Re: Cylinder miss fire

i am running champions, will change the plug and see.

 

[plus+]

Re: Cylinder miss fire

I did change the plug but there is no spark at all, and took one of the coils and the spark cable of the other engine and same thing did not work