How to Test Spark Plugs on an Outboard | Outboard Ignition System PT 2 | Boats.net

See how to test the spark plugs on your outboard in this video from boats.net.
This is the second installment of our three-part series covering the ignition system on your outboard.
Part 1: How Does an Outboard Ignition System Work: • How Does an Outboard I...
Part 3: Troubleshooting an Outboard That Won’t Start: • Ignition System Troubl...
Get a Neon spark plug tester: www.boats.net/product/accesso...
Get dielectric grease: www.boats.net/product/accesso...
In this video, John will show you how to perform a spark plug test and evaluate the condition of your spark plugs on your outboard. The spark plug’s appearance can give you several clues about your engine: is it running too rich? Too lean? Bad rings? Bad fuel mix on your 2-stroke? We’ll look at how to make sure the spark is getting electricity, how to make sure it’s actually producing a spark, and how to tell if the spark you’re seeing is enough to power your outboard.
Read how to do this job step by step: www.boats.net/blog/outboard/s...
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[@user-lx3ik1ji9q]

Thank you, john, for your videos!

[@vikramjeetsingh5936]

You are best teacher

[@larrythompson5617]

Hi John, could you answer the questions asked by viewers so we are a bit more educated on electronics?

[@TXAG81]

Hello John. Really like your channel. Does Yamaha recommend using anti-seize (marine grade) on spark plug threads on my 2013 VF250LA? I use my boat primarily in saltwater. Please advise.

[@mikes1798]

Thanks! When in inspected the three plugs on my 98 Mercury 40hp two stroke, the top of one of the plugs separated from the body of the plug when I pulled the wire off. Problem solved. Suspect they were factory original plugs since they had some black over spray at the base. Long over due for sure. Boat only used a few times a summer.

[@shenelelobai2511]

Hello John what type of spark plugs do you recommend for a Yamaha 200hp v6?

[@locknload9143]

When you were referring to using anti-seize and Dielectric grease, did you mean there is a marine Dielectric grease? Thank you.

[@TXAG81]

John, one last question. I just had to replace a perfectly good ignition coil because it got stuck to the spark plug insulator ($150 ouch!) when changing my spark plugs. Does Yamaha recommend using a bit of dielectric tune-up grease on the ignition coil boot to prevent it from sticking to the spark plug insulator? Please advise.

[@dannyhill2057]

Would y’all have carburetors for a 1990 40 hp Mercury classic outboard?

[@jamessaumier1905]

If i have no spark on bottom 2 cylinders coil or CDI? Thanks

[@wyattjohnsoutdoors6432]

So i got a 25 etec and its been sittin since 2015 the guy said. I tried crankin it it had no spark but i has compression what do i do

[@amanrana4069]

Hi John, i just bought a Tohatsu 50 4 stroke may 15th 2022. Its not running good. Its like its missing on a cylinder or two. The spark is very week orange colour. One spark plug had a bit of wetness on top of it. It struggles to go over 3000rpm. I have put antifreeze line bottle in it but it does not help. Can you help me please as the dealer does not want to know anymore. I would appreciate it very much.

[@anibajohn9471]

How do check spark plug on 96 mercury tracker 40hp

[@armandoquezada5559]

Why would my motorcycle only crank over twice and spark towards the end? I can't get it running unless I bump start it. Shouldn't it be sparking as it is cranking over?

[@joebloe1401]

ALSO NEEDS COMPRESSION!!!!!!!!!!!!!!!!!!