how it works- outboard ignition/spark system

How a 2 stroke outboard ignition system works

[@danielmeecham464]

Yo!
This is exactly the information I needed. I've been a back yard mechanic for about forty-five years and am working on a 50hp Mercury and lost spark. Twice. I was missing direction. Direction of flow that is. So thanks for for the direction for the direction I need to follow!

[@patrickmorganelli6585]

Excellent video! Very clear and informative! Thanks!

[@adamwuksta3255]

Thanks for the straightforward explanation

[@sakerarab9894]

Great video.. you make things simple

[@randycindynewberry4000]

Thank You so much. best video i have watched after hours of searching.

[@robertofuentes8899]

Great Video for us, just recommend you to answer questions for everyone that took their time to watch your video, is gonna take u one cigar!

[@jaredashley9277]

dude thanks for the info very helpful

[@jimfreeman5108]

very very informative, thanks a million

[@tcbiglake]

Great rxplanation

[@jimdrechsel3611]

Thanks for sharing. Good explanation. Can the stator send low voltage that can spark at low speed but not high speed under load?

[@carloscollins6813]

Nice video! What could cause a short life on my coil for a 9.8 hp tohatsu 4 stroke?

[@chrisaldrich4284]

If the stator is just generating power, like an alternator, why does it need so many wires? Thanks for taking the time, appreciate the videos.

[@yijianggu5203]

Great video. what is different from ADI?

[@budgetbuyer1534]

Wow... Thanks for this vid. You really made me comprehend the flow chart. I will also watch your vid on "how to diagnose no spark."
I drove to Albuquerque, New Mexico (from Las Cruces) to pickup a 1970s Johnson 80hp outboard. I only paid $50 for everything but the steering. Came with all the controls. Seller told me that there was no-spark, and he diagnosed it to the CDI. Is the CDI box the same thing as the "power pack?"

[@CAPTAINWILLY]

Yea. Awsome thanks man

[@psi23k]

Great informative video 👍👍

[@coffeedollsvp]

Will a bad ignition coil cause an outboard not to start ..it starts only when i spray starter fluid into carb..when it idles it hesitates and stutters.

[@nahazananazahana5813]

Can u explain Yamaha four-stroke Yamaha 8 outboard engine starting problem

[@74nova36]

Mercury 125 “2+2” Two-Stroke
Been reliable for years. Just now started bucking when transitioning to all 4 cylinders. Won’t do it every time. RPM gauge has never worked either.
Any tips would help before I break into this weekend

[@rdeanlive]

Captain Willy i have a 1977 402 electric start mercury that had no spark at all replaced stator and fly wheel used from marine shop and still no spark. Never used puller just took top nuts off and replaced stator and fly wheel then bolted fly wheel back on. Well there is still no spark.Motor turns over fine but no spark, used cheapo ohm tester and the results showed .794 and .795 when both wires probed to trigger still in motor what the heck could it be what other checks can be done. Any info would be appreciated thank you.

[@markus4434]

What if you have a single coil that fires 2 cylinders, but has no spark on 1 cylinder? That's my problem, I bought a new coil and still no spark on top cylinder.

[@brandonpharis1480]

Legit video

[@yijianggu5203]

Does ADI has switch box to store juice as well >

[@castineirachannel]

I have yamaha ox66 250 1999 how i check the stator and no have power in 3 coil in 1 side the motor

[@jonathans1472]

What would cause a stator to burn out over and over? Motor is 2 stroke about 25 years old. Thx.

[@73suburban]

thank you for the video. does the switch box change the ac v from the stator to DC V?

[@hinesd1960y]

Nope. The rectifier does.I watched a few videos and it was mentioned.

[@MikeMitchell-xx9st]

or would the cdi box qute on all 4 coils

[@kenneely1752]

My mercury black max runs good for about 20 minutes and then suddenly loses power. Any idea what can cause that?

[@MikeMitchell-xx9st]

i have a 75 hp and have no spark on all 4 coils and put a new stater and new tregger on ittell me plese whats going on with that

[@MikeMitchell-xx9st]

i put a light to chick every thang and its getting power to every thang but the coils all 4 no power would all 4 go bad at once

[@seapup2247]

Does a bad trigger look banged up and broken? We are not mechanics l😅

[@treskoedusa]

very interesting to understand

[@georgewilfredmckay593]

My 90 evinrude won't start, I replaced relay starter switch nd now they say its the electrical box bc when you turn on key it doesn't go past the electrical box,, any idea?, please nd thank you.

[@miked5728]

Great video !!! Good info.. I've got a 110 HP Evinrude, It starts and runs good. But after about 15 minutes, the battery is dead! (New Battery...) Sound like the stator?

[@DarthVader-gc2os]

Yes

[@toanle-md6yn]

Is this the rectifier?. It converts AC to DC chargers

[@miked602]

My outboard runs backward.
1977 Mercury 110 2 stroke 9.9hp
Pull start pulls clockwise, but engine starts, kicks and reverses almost immediately.
Why?

[@all_visual_arts5483]

Hello there boat Community!
I hope someone see’s this, I recently got into boats and motors and am trying to repair a 4 stroke merc 6hp 2007, which has been standing for about 1-2 Years.
But as I dont really know too much im having some troubles, theres no spark, (already changed oil, Spark plug and gasoline) so I thought it was the Coil, so I brushed that real clean of most rust, sadly I dont have an Ohm reader to test it.
My guess is that the kill switch cables are the problem though, would you have some procedures or tips to finding what my motor wants and or needs, thank you in advance. I do not have the money to let a professional look at it or buy any expensive spare parts.
Have a nice day.

[@joeroderick1139]

Rectifier?

[@wazup3333]

do you have a video on four stroke like the suzuki df140 that doesnt have a cdi

[@CAPTAINWILLY]

I dont. I plan to cover 4 strokes in a comming video tho.

[@wazup3333]

@@CAPTAINWILLY Will a faulty stator cause no spark to the coils in a four stroke outboard that doesnt have CDI, suzuki df140 ? In the service manual it doesn't mention anything about the stator in the troubleshooting chart

[@ntomdia]

Saw cigarette in hand, hit subscribe. Simple.

[@rodneyhatcher1858]

I'm not getting fire on 2 4 and 6 cylinders

[@lenharrison1197]

Thanks AC power runs engine, rectifier to battery, trigger to solenoid. No spark on any cylinder, likely stator

[@kittredgejohn]

I have a 2 cylinder 2stroke. Cylinder #1 is firing at the same timing as #2. Is that a timer problem or a CDI problem?

[@CAPTAINWILLY]

If each cylinder has its own coil than its likely a trigger problem. If there is one coil with two spark plug wires coming off. Than thats called a waste spark system amd it is supposed to fire at the same time

[@kittredgejohn]

Thanks for responding! 1976 Johnson 55 has 2 coils but only 1 flywheel sensor. Cant figure out how it knows to make two different spark timings.

[@CAPTAINWILLY]

@@kittredgejohn ahh. Didnt realize we were playing with somthing this old. Yea pre 1980 evenrude amd jhons have a stator under the flywheel that only makes voltage. All the rest of the electrial workings happen in the cdi box. No trigger on this motor. Sence you have spark... To often. The only thing it could be is a failed cdi. On that csi there is no terminals to test from. Just a black chunk amd wires. Replace it.

[@kittredgejohn]

This one has a crankshaft sensor inside the stator ring. My CDI has 8 screw terminals (#8 is vacant).

[@MikeMitchell-xx9st]

its a 76 mercury

[@yellamamba4554]

Whao! 🤯
Thank you! Lol

[@TheBluceRee]

This is a great fucking video.
Id pay money for you to make a video like this explaining how to test the electrical system with a multimeter.
I have a 2 cylinder 25hp, the bottom isnt getting spark only after it warms up. Replaced stator, replaced coils and spark plug wires, nothing. Do you think the trigger could cause this?

[@Madhandsboy]

So what would you say it is if I have spark on the left 3 cylinders, but no spark on the 3 right cylinders, already replaced power pack, still no spark

[@CAPTAINWILLY]

Sounds like a trigger problem. Depends would have to test the wires coming into your "power pack

[@Madhandsboy]

@@CAPTAINWILLY exactly what I was thinking, but how should I test them, probably a break in the wire huh? Or can I test them with my voltmeter?

[@CAPTAINWILLY]

@@Madhandsboy have you watched the other video? Tagged in this video.
Your cdi "power pack. Is being told to release power to the coils with information from the trigger. Using your dvom. (Multimeter) find the wires coming from the trigger. Find atleast one wire that is sending power to the cdi (ac voltage) that is going to be one of the triggers to a coil that is working. Now find one that isnt sending power.
Where that dead one sends its power to the cdi take it off the cdi amd swap the known good wire to the cdi in replacement of the dead one. Summary- firing one of the dead cylinder coils with a known good trigger. It will be way out of time. But if it fires on a hole that didnt before you know the trigger is bad. The coil os good amd the cdi is good

[@L2fish]

New stator. Trigger had a burnt wire, I spliced it. Still no spark on any of the four cylinders

[@CAPTAINWILLY]

What motor. Year range?

[@L2fish]

@@CAPTAINWILLY Mercury 50 HP 4 cylinder 1986

[@CAPTAINWILLY]

No spark from any hole. Makes me question the kill switch. Also question the stator. I know you said its new. But whats the ac output?

[@L2fish]

@@CAPTAINWILLY I was thinking that and flipped it back and forth. I disconnected the black/yellow stripe kill wire off the power module. I put the stator in today. I don't have a DVA adapter for my volt meter but ordered one today. I looked on line for a schematic of the controller thinking maybe the ignition switch is buggered up. Motor turns over fine with the key switch but that doesn't mean its working right. The burnt off wire on the trigger bugs me. It was the white/black stripe.

[@CAPTAINWILLY]

@@L2fish white and black strip possible that that may loose one coil. Not all. You got this man.

[@vernmaas3609]

You didn't say where the beer hooks up

[@MikeMitchell-xx9st]

its rack my small bran

[@landonhair1711]

I have a terrible bog on my two stroke and nothing seems to work

[@MikeMitchell-xx9st]

75 sorry

[@curtisbrown5728]

Can’t watch the whole thing, disgusting smoking while making video

[@CAPTAINWILLY]

Im a prisoner. Tryed it all.