50hp evinrude no spark?help

phatmanmike

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1980 50hp evinrude 2cylinder, wont start, not getting any spark. turns over great, battery is good and charged. started yesterday for about 10 seconds with a rope start, i have since put on a starter...no controls yet, so i am jumping the selanoid with a push button starter switch... but no spark .i have 12 volts on my yellow/black kill switch wire, i think its doubley grounded wrong someplace, cause when i attach my volt meter to the POS batt terminal and the engine block, i get 12.8 volts? is this right, why do i have 12 volts running through my block. anybody, please help, i have ordered my manual, but its not here yet.
 

Mod2

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Re: 50hp evinrude no spark?help

phatmanmike....please do not open another thread on the same topic. It makes the thread hard to follow and you may get info already posted. I have combined your original post with this one.<br /><br />If you need to get the post back to the top, click on Reply to Post and just put a "^". This will bump it back to the top.<br /><br />Thanks.
 

Mod2

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Re: 50hp evinrude no spark?help

From the first thread.<br /><br />phatmanmike <br />First Mate <br />Member # 34606 <br /><br /> posted January 21, 2004 06:17 PM <br />--------------------------------------------------------------------------------<br />just bought this motorlast week, 2 cylinder model, and finaaly go everything hooked up and motor installed and such. DO NOT HAVE ANY CONTROLS YET OR STARTER. hooked up a battery and rope started it, ran for about 15 secs and died. took starter from my 1969 85hp evinrude and it hooked up and fit 100 %, but now it crnks real easy but wont start at all with this new starter. what gives, its got fuel, its got spark, water is pumping. am i missing somthing, since i have no controls ( i. e, no wire harness) just battery hooked staright in. any help????? <br />--------------------------------------------------------------------------------<br />Posts: 13 | From: florida | Registered: Oct 2003 | IP: Logged <br /> <br />OBJ <br />Tackle Shop Admiral <br />Member # 18214 <br /><br /> posted January 21, 2004 06:33 PM <br />--------------------------------------------------------------------------------<br />Mike....I'm taking for garanted you have the battery hooked up to the starter solenoid and are jumping the solenoid to crank?<br /><br />What do you know about the motor as far as recent maint.? <br /><br />Try getting a spary bottle with some premix in it and blow some in the carb throats. If it starts, you have a fuel problem.<br /><br />Check the primer solenoid little red handle is straight back along the solenoid and not turned out. This would flood the engine.<br /><br />Check your spark. The spark to each cylinder should jump a 1/2" gap with a hot white spark.<br /><br />Do a compression test just fer grins. The compression on each cylinder should be 10 to 15% of each other.<br /><br />When you say no wire harness, I would assume the large red connector in the engine area has noting connected to it.<br /><br />Keep us posted....thanks.<br /><br />--------------------<br />OBJ<br />*When all else fails...use the manual.<br /><br />--------------------------------------------------------------------------------<br />Posts: 2642 | From: Rayland, Ohio | Registered: Dec 2002 | IP: Logged <br /> <br />phatmanmike <br />First Mate <br />Member # 34606 <br /><br /> posted January 21, 2004 07:37 PM <br />--------------------------------------------------------------------------------<br />i have a "momentary on",red push button switch that i wired to the selanoid, so that when i push it , the starter spins. you wrote, and i qoute"Check the primer solenoid little red handle is straight back along the solenoid and not turned out. This would flood the engine" um, im not getting this ,im slow, what is the primer selanoid?<br />i have no compression guage as of yet...<br />and yes, the large red connector is unconnected<br /><br />what adverse affects would using this starter on the newer motor have.? starter is from a 1970 85hp v4 and new motor is a 1980 50hp 2 cylinder? it fits perfectly. i dont wanna ruin the engine before spring time comes..... <br />--------------------------------------------------------------------------------<br />Posts: 13 | From: florida | Registered: Oct 2003 | IP: Logged <br /> <br />OBJ <br />Tackle Shop Admiral <br />Member # 18214 <br /><br /> posted January 21, 2004 07:55 PM <br />--------------------------------------------------------------------------------<br />Whoops!! My mistake Mike. Yers don't have a primer solenoid. Just choke plates. Thinking of my 50hp.<br /><br />If the starter fits and is engaging the flywheel gear OK, shouldn't be any adverse affects.<br /><br />Sounds like you have the "push button" OK. <br /><br />JB did a FAQ on "My Motor Won't Start". Real good info there. It's on the main menu of forums, the very first one. Check out the few things I posted and if it still don't start, give JB's post a go.<br /><br />--------------------<br />OBJ<br />*When all else fails...use the manual.<br /><br />--------------------------------------------------------------------------------
 

OBJ

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Re: 50hp evinrude no spark?help

Mike....You read 12V to the engine because the battery ground is connected to the engine as it should be. Normal.<br /><br />If no spark at all...probably the pack has died. But to be sure, the problem can also be the charge coil under the flywheel or the sensor also under the flywheel. A peak reading volt meter would be nice to have to read the voltages from both.<br /><br />You can do an ohmmeter test on both. Disconnect the four pin connector from the stator to the power pack. Calibrate your meter to low ohms and measure across pins B and C. This is for the sensor coil. You should read 40 ohms +/- 10. To read across the charge coil, read across pins A and D. You should see 475 ohms +/- 75. This is on high ohms scale.<br /><br />If you can read volts....For the sensor, read the same pins. Crank the engine and you should see a voltage higher than .3 volts. Reading the output of the charge coil, read across A and D. Crank the engine. Out put should be 230V or higher.<br /><br />If these tests pass, probably the power pack has gone south.<br /><br />Keep us posted.
 

Hooty

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Re: 50hp evinrude no spark?help

I'm kinda puzzled about the 12vdc on the black/yellow wire. Anybody: Should there be voltage on that wire with the engine not running?<br /><br />c/6<br />Hooty
 

OBJ

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Re: 50hp evinrude no spark?help

Only way I know would be a short in the wireing or the rectifier fried closed and 12V's is backfeeding back up through the stator somehow and back down threw the power pack. Wow!! That's a long shot!!<br /><br />Mike....you didn't at any time hook the battery up backwards did ya'? You sure you got 12V's on between the black and black/yellow wires?
 

rickdb1boat

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Re: 50hp evinrude no spark?help

From a Joe reeves previous post: <br /><br />.... Using a volt meter, set the scale to its lowest DC reading. Disconnect the black/yellow wires at the powerpacks.<br /><br />Connect the meter (+) lead to the yellow/black wire (one at a time) and the (-) lead to ground.<br /><br />A voltage reading, regardless of how minor it may be, at either of those black/yellow wires indicates that there is either a high resistance short in the wiring harness or at the ignition switch (my experience, it has always been the switch).<br /><br />To check the switch, simply remove the black/yellow wire from the "M" terminal of the switch. If the voltage at the packs black/yellow wire ceases to exist, the ignition switch is faulty and will require replacing. Have the switch in the ON position. However, regardless of the switch setting, there should be absolutley NO voltage being applied to that black/yellow wire, not even a slight fraction of a volt.
 

Xcusme

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Re: 50hp evinrude no spark?help

That 80' 50HP uses the same powerpack as my 79' 15hp. The charge circuit/starter circuit are independent of the powerpacks charge circuit. As I described in another post awhile back, the charge coil is responsible for supplying the powerpack with it's initial charge voltages thru a full wave bridge. This voltage, now DC, charges a capacitor in the powerpack. This voltage is approximately 200VDC. This voltage is conducted thru the powerhead to the coils. The coils boost the voltage to many thousands of volts to fire the plugs.<br /><br />The black wire of the kill circuit will show this same 200VDC voltage when the motor is running.<br /><br />FYI: The Black and Black/Yellow kill wires are electrically connected directly to the charge capacitor of the powerpack. The Normally Open kill switch, when pushed, effectively dead shorts the charge capacitor, killing the 200VDC primary coil voltage. No 200VDC=dead coils=motor dies.<br /><br />Normally, you should not see 12VDC on the Black/Yellow lead.
 

OBJ

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Re: 50hp evinrude no spark?help

If guys will notice, he dosen't have the engine harness hooked up. It's unplugged at the engine. <br /><br />Thanks for the input guys.
 

phatmanmike

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Re: 50hp evinrude no spark?help

wow thanks to all of you, that is a lot of great information, im getting up ow to go out side and try some of that stuff. and oh yeah, i dont have the harnes hooked up... just got my new controls yesterday, but not hooked up yet, trying to be as simple as possible... :) thanks again, i will keep it posted!
 

rickdb1boat

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Re: 50hp evinrude no spark?help

Good point, OBJ. Should isolate any other shorts in the harness. DUH, my fault for not seeing that... Thanks! I would go thruogh all the wires in the motor compartment, before I replaced major components... Do the fuel spray in the carb as suggested first.
 

phatmanmike

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Re: 50hp evinrude no spark?help

ok , i checked the voltage at the black/yellow wire, and it was a flat ZERO ! woo hoo :) <br />i looked all around and found no shorts(to my best effort) and looked for the 4 wire plug you spoke of coming off the stator...do i have to remove the flywheel for this....i couldnt find any plug ? what tools do i need to remove the flywheel, i.e, how do you keep it from spinning mostly, i have a steering wheel puller... any who, boat us has a power pack in stock, so im on my way, and if it isnt the pack, they say i can bring it back! gotta love that ! ill let you guys know later today and thanks a zillion<br />p.s. smoked salmon is great! you northwestern guys need to send some my way !
 

rickdb1boat

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Re: 50hp evinrude no spark?help

Yes, you will need to pull the flywheel to gain access to the pack and wiring. A good old strap can be made with an old belt(the kind you where on your pants) and something to use for leverage to hold it. Another solution is to get one of those ratcheting? straps from home depot and tighten it around the flywheel and hang on to it as you tighten the puller. Leave the nut on the flywheel so that the threads are even with the top of the flywheel bolt, so that you can give it a good rap with a hammer to break it loose. Get a friend to help you...
 

Hooty

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Re: 50hp evinrude no spark?help

Hey, Mike...<br />There's gotta be some wires coming out from under the flywheel. Should be a brown, brown & yellow, black & white, white & black.<br /><br />c/6<br />Hooty
 

phatmanmike

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Re: 50hp evinrude no spark?help

im back, and to answer HOOTY, yes there are 6 wires coming from under the fly wheel... a black and a white, coming from front of fly wheel(timer base) and a brown, a yellow, a yellow with brown strip and a black(ground) coming from stator, i tested the brown and it has 160 AC volts, so electricity is beeing made under there.. and as the motor is still under warranty, bo i love that word, let me say it again, WARRANTY :) the shop owner walked me through the test sequence over the phone and says its the power pack, on the side of the motor, so he is expressing me a new one monday for free. will let you all know what happens from there.. and because of all his help, i have to give props to www.vikingmarine.com of polk city, fl check it out, some good stuff.. :)
 

phatmanmike

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Re: 50hp evinrude no spark?help

ok guys im back, it turns out it was the stator, i had the shop repair it for free, can you say warranty..... it runs great and i love it, and i thank everybodys help i recieved from here !
 
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