Spark plug

[royboy]

"What would be the best spark

"What would be the best spark plug to run in a 1978 Johnson 140hp,,model 140 TL78c. I have seen several listed but want the best for general use."

 

[rickdb1]

The UL77V surface gap Champion

The UL77V surface gap Champion is the recommended plug for your motor. Some run QL77JC4's gapped at .030 if you do alot of low speed running...

 

[royboy]

"Thanks Rick, That is what I w

"Thanks Rick, That is what I will use then."