Help with 65′ Evinrude Fisherman 6HP

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This topic contains 94 replies, has 16 voices, and was last updated by Avatar bakercheese 1 year ago.

Viewing 15 posts - 16 through 30 (of 95 total)
  • Avatar
    t-bell

    Replies: 44
    Topics: 1
    #71628

    Thanks again for all the incredibly helpful responses you’ve all been very helpful thank you Mumbles, crosbyman, squier, FrankR, Jerry, indy46 and anyone I’m forgetting! I’m going to go ahead and order the timing tool since it’s the bee’s knees apparently. Should I get the coil tool as well? I was able to get them to line up really darn flush from what I can tell with a straightedge and my fingers.

    Avatar
    t-bell

    Replies: 44
    Topics: 1
    #71630

    Agreed squeir that’s exactly what I’d gathered, clean the contacts one last time before you set them, use the tool and ohm meter to set it, then tighten her down, leave it and repeat for cylinder 2.

    I know!!! I know!!! 😆 🙂 when I first got it running it was alright, but after a carb rebuild and fidilling with the oil fuel mixture knob had it running great then it lost spark to the top cylinder but before that little thing was kicking ass!!
    Any advise on how to set the mixture knob now that I think of it? I cant remember what I read last time about it

    Avatar
    garry-in-tampa
    Lifetime Member
    Replies: 2958
    Topics: 29
    #71635

    I set them with the feeler gauge for 20 years before they came out with the tool. I guess practice makes perfect because when i rechecked with the tool, I was dead on. If you have problems it’s usually because of a loose bearing on the crankshaft or breaker plate. . . 😀

    Avatar
    crosbyman
    Canada Member - 1 Year
    Replies: 1111
    Topics: 147
    #71642

    make certain no coil wires ended up rubbing on the cam lobe… tuck in all wires away from it

    stuff to read

    http://www.leeroysramblings.com/OMC_6hp.htm

    Avatar
    t-bell

    Replies: 44
    Topics: 1
    #71789

    Hey all!!
    Just wanted to give you guys an update and and a huge thanks to everyone who responded!
    Got my timing tool and coil placement ring in the mail Wednesday and got everything times in perfect and put back together last night. Took a couple of pulls to get her going initially but now she fires right up first pull now!

    Only problem being it SCREAMS like a bat out of hell when it runs in neutral in the tank but after putting it on the boat and running in a lake under power, it doesn’t get going even half as fast as it does in neutral and only seems to be going out about a 1/4 of full power. Seems like it must be a carb issue or maybe fuel/oil screw?

    Avatar
    crosbyman
    Canada Member - 1 Year
    Replies: 1111
    Topics: 147
    #71798

    back to square one… what were your compression numbers

    and… you should not let it scream in neutral in the tank… ever

    Avatar
    t-bell

    Replies: 44
    Topics: 1
    #71800

    Haven’t checked but it’s definitely good, i can feel it, and I had it running like a top before about 2 or 3 years ago before it lost spark to the top cylinder. Went and checked for spark and nothing to the top cylinder again! Pulled everything back apart and BOTH the new coils aren’t reading anything from the secondary winding.

    Avatar
    t-bell

    Replies: 44
    Topics: 1
    #71801

    and I wasn’t aware, I didn’t think it hurt to rev it it up a bit in the tank?

    Avatar
    fleetwin
    US Member - 2 Years
    Replies: 2516
    Topics: 29
    #71802

    It will rev up great running on one cylinder for sure, but have no power once in gear. Are you sure you have spark on both cylinders? If so, how are you checking for spark?

    Avatar
    t-bell

    Replies: 44
    Topics: 1
    #71805

    Spark was only going to bottom cylinder, nice strong blue spark, nothing to the top at all, pulled top spark plug and put it in bottom boot and it works fine same strong blue spark. No I don’t have an actual spark tester. Checked brand new spark plug wires with meter (again) both have good continuity. Checked primary windings on both new Sierra coils and they’re good. Checked secondary windings in brand new coils and they’re bad from what I can tell using a meter as previously described and shown in the YouTube videos, unless I’m doing something wrong which I’m pretty sure I’m not but hey I’ve been wrong before….

    Avatar
    garry-in-tampa
    Lifetime Member
    Replies: 2958
    Topics: 29
    #71807

    Sounds like a bad spark plug. Although that isn’t much of a test. The resistance across the spark plug gap is much higher under compression. You can cut off the side electrode and use that to check for spark OR use a length of clear flexible plastic with an inside diameter the size of the spark plug wire. In one end goes a shear pin that will go into hde wire contact in the spark plug cap. Wrap the free part with tape so it fits the inside of the plastic tube. There should be enough beyond the rubber spark plug cap to secure with a tie wrap. in the other end of the plastic tube insert a length of spark plug wire with an alligator clip soldered on. Adjust the gap to a quarter inch and secure in place with another tie wrap. That will be your test spark plug. . . 😎

    Avatar
    t-bell

    Replies: 44
    Topics: 1
    #71809

    Bad spark plug??? From all my tests it seems they’re fine and the secondary windings are bad in the coils, unless I’m doing something wrong. Does testing have to be done with an analog meter and not a digital one?? Is there another way to test these coils?

    Avatar
    t-bell

    Replies: 44
    Topics: 1
    #71810

    Or is that some kind of joke?

    Avatar
    crosbyman
    Canada Member - 1 Year
    Replies: 1111
    Topics: 147
    #71813

    measure booth clip to frame ground
    should see 4-7kohms if not 4-7Kohms then re-measure from HV coil pin to frame ground if ok….. bad plug wire
    if not OK measure HV pin to black wire just in case the mag plate is not grounding to engine block properly
    if ok to black wire but not engine frame find out why the mag plate is not grounding properly

    you must have 4-7kohms to engine block from the booth clip

    measure plug wire end to end should be 0 ohms if you used proper metallic wire (no carbon)

    something is strange here… 2 bad coils with same symptoms is very unlikely…. short you meter probes to ensure you read 0 ohms before starting analog or digital are both ok

    Avatar
    garry-in-tampa
    Lifetime Member
    Replies: 2958
    Topics: 29
    #71814

    Sorry – some how "Wire" was deleted from the end of my first sentence. . . 😳
    Look for a crack in the insolation of the top plug wire . . . 😉

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