Can a gap-Johnson spark plug cause a misfire?
Re: Spark Plug and Gap – Johnson 115hp V4? the motor was built to run on Champion Plugs, NGK and others are known to cause a misfire, in these motors. NAPA even has this noted in there computer, when you look up the plugs.
What kind of spark plug does a Johnson outboard use?
Johnson Year Model / Engine Copper Plus Plug Alternate Plug Gap 1998-1993 COM. QL78YC L78YC 0.03 1992 COM. QL16V — — 2004 LV6, D.I. 6-Cylinder QC12PEP — 0.03 1993-1986 V6 QL77JC4 L77JC4 0.03
Can a NGK spark plug be used on an outboard motor?
NGK spark plugs are original equipment on many outboard motors and are excellent replacements for everyday engine maintenance. Please view the application guide below. You may also find the NGK spark plug code helpful.
Is there spark plug and gap-Johnson 115hp V4?
NAPA even has this noted in there computer, when you look up the plugs. Re: Spark Plug and Gap – Johnson 115hp V4? Thanks for that. While we’re on the subject, I managed to hook the spark leads up to the wrong cylinders when I put them back on (yes it was one of those days).
What’s the gap between spark plugs on a 15 hp Johnson?
Gap: .030″. You can also use a QL77J4 if desired. Thank you for the info. The plugs are very worn and need replaced. What are the differances between the plugs if any? All I can find online is a L77JC4 and QL77JC4. Are these the same plugs just updated numbers? Glad you asked question. Correct gap is .040″ [ I was thinking of another motor].
NGK spark plugs are original equipment on many outboard motors and are excellent replacements for everyday engine maintenance. Please view the application guide below. You may also find the NGK spark plug code helpful.
Can a Champion Spark Plug be used on an inboard motor?
Champion spark plugs are original equipment on many outboard and inboard motors and are excellent replacements for everyday engine maintenance. Please view the application guide below. You may also find the Champion spark plug code helpful.