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Thread: 582 Engine Hard To Start

  1. #1

    Join Date
    Apr 2016
    Location
    Frankfort, Ky.
    Posts
    13

    Default 582 Engine Hard To Start

    I have the Rotax 582 that is very hard to start when cold. I try priming I try not priming. It just won't fire. After I finally get started and it warms up then it starts easy. I'm using premixed fuel. Any suggestions?

  2. #2
    Senior Member Av8r_Sed's Avatar
    Join Date
    Feb 2010
    Location
    10C Greenwood, IL
    Posts
    671

    Default Re: 582 Engine Hard To Start

    Is the starter cranking quickly? If not check battery condition, supply cable and ground to the starter. Try new plugs gapped to 0.018 (off the top of my head). Check the ignition wires from ignition modules to plug cap. Try to reseat them if they've pulled out at all. Also consider changed them out if they've seen some wear. Might check the condition of the rubber carb sockets for any cracks. This can only be done by removing and flexing them.
    -- Paul S
    Model III SN910
    582 IVO Med

  3. #3
    Senior Member
    Join Date
    Mar 2009
    Location
    Pittsboro,NC
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    299

    Default Re: 582 Engine Hard To Start

    I had a similar problem with a 503 except it started ok cold but was hard to start hot. After chasing rabbits without results a called Dwight Edmondson , who was a very sharp Rotax mechanic in Goldsboro, NC. One of the things he suggested was to check the stater. He said to check (as best as I remember, 15 or more years ago) by reading resistance with an ohm-meter across the plugs from the stater to the ignition modules. If the stater is good it should read around 300 ohms. Mine was way off. I replaced it and never had another starting problem. Also, if you have the pump type primer, the ones I've seen are pretty poor quality and need replacement pretty often. Some of my flying buddies had them and they didn't last very long. One more thought, floats. I had to replace mine because they didn't, float that is. Anyway, just some experiences I had. Let us know when you figure it out. Good luck. James Thomas

  4. #4

    Join Date
    Oct 2010
    Location
    Sweden
    Posts
    5

    Default Re: 582 Engine Hard To Start

    Adjust the gap in the spark plug to the specifications. That made a difference for me.
    When priming, you should have the throttle open.
    __________________
    Johan P
    Sweden
    Kitfox IV, 912 ULS
    Full Lotus floats, KievProp

  5. #5

    Join Date
    Jun 2013
    Location
    Baton Rouge, LA
    Posts
    98

    Default Re: 582 Engine Hard To Start

    Many guys have reported a similar problem. Solutions and cause vary but here are some things reported to be the fix. Some things to try :

    Decrease plug gap to .016
    As mention check ignition resistance
    Install new hot battery
    Clean check all ignition-battery connections (Battery, Solenoid, grounds, starter)
    Check sparkplug cap wire connections
    Check Stator wiring and/or Replace Stator
    Check and/or replace starter
    Replace primer
    Replace fuel pump
    Clean/Check/Rebuild carburetors
    Replace paper element fuel filters (if installed)
    Discontinue use of Ethanol Blend fuel if used
    Replace engine
    Remove Dirt dobber nest from end of exhaust pipe

  6. #6

    Join Date
    Apr 2016
    Location
    Frankfort, Ky.
    Posts
    13

    Default Re: 582 Engine Hard To Start

    Looks like it was just the battery. It measured good voltage, but just didn't
    have what it take to crank it fast enough. I replaced the battery and now it starts good. This is the second time I have had to replace battery in two years. about a year is all I was getting out of a battery. Checked the charging system and found it was over charging the battery. Installed a new voltage regulator (Key West). Hope that takes care of it.
    Thanks for all the suggestions.

  7. #7

    Join Date
    Jun 2013
    Location
    Baton Rouge, LA
    Posts
    98

    Default Re: 582 Engine Hard To Start

    I've had my share battery problems also. One thing my battery guy suggested was buying a Schumacher MC-1 charger to maintain the battery occasionally. He said these little units work well for small motorcycle type batteries. He uses these in his battery shop on all his small batteries. They come with a pig-tail quick connect adapter you can install on the battery and leave in place. Pretty cheap to buy off Ebay, Amazon, ect.

  8. #8
    Senior Member Av8r_Sed's Avatar
    Join Date
    Feb 2010
    Location
    10C Greenwood, IL
    Posts
    671

    Default Re: 582 Engine Hard To Start

    You need to be careful to match a battery charger to the battery technology you're using. The Schumacher might be good for an old style motorcycle lead acid battery but would kill an Odyssey AGM style or a lithium cell. Do your research.
    -- Paul S
    Model III SN910
    582 IVO Med

  9. #9
    Senior Member
    Join Date
    Jul 2013
    Location
    Highlands Ranch, CO
    Posts
    404

    Default Re: 582 Engine Hard To Start

    Personally I don't think the Schumacher MC-1 should even be on the market! It is a manual charger (no auto shut off) and does not even have a full charge indicator light. Forget it's hooked up, get distracted and off to something else and you could lose more than the battery!

    I don't even leave my automatic charger/tenders on, unattended - unplugged overnight or when I'm leaving the shop.

    Greg

  10. #10

    Join Date
    Jun 2013
    Location
    Baton Rouge, LA
    Posts
    98

    Default Re: 582 Engine Hard To Start

    Whoops my bad ! My battery guy suggested the Schumacher SEM-1562A-CA NOT the MC-1. Sorry for the confusion.

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