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[tmccowboy]

For some reason i said i had a 82 merc. sorry I was thinking about the merc my son has. I have a 82 chrysler outboard 55hp. Haveing trouble after it runs a while,very hard to start,will not idle. Once i do get it stared again it runs fine, but still will not idle. To me it sounds like somthing electric problem but do not know where to start at.

 

[RRitt]

Re: last post

could also be gummed up carbs. every time boats sits the gas in carbs starts to evaporate and leave residue. first thing I look for when engine is hard to start and then runs fine after starting.

 

[eurolarva]

Re: last post

a good test is when motor starts to falter is to hit the choke. If that revives the motor your fuel system needs work. If that is the case I would rebuild the carb and fuel pump. Replace all the fuel hoses and probably the primer bulb. If the choke kills the motor I would start looking at a compression test and a spark test. Your description of what is happening sure sounds fuel related.

 

[Frank Acampora]

Re: last post

Does it have Magna-Power II ? It will say so on the cover. If it does, after you check out fuel related problems, that could be it. Mag II was an iffy design right from the get-go and never really functioned well. If that is your problem, there is nothing you can do. Mag II was primarily used on the 78-80 55 hp but there is a chance you have it.

If it is Mag II, run it till it fails and then try to find a retro fit kit at The Chrysler Crew (good luck--very scarce)

 

[tmccowboy]

Re: last post

no its not a magII.Any other ideas it could be the power pac i was told by somone.

 

[eurolarva]

Re: last post

Have you tried rebuilding the carb and pump. 99 percent of the time it is the fix for this problem.

 

[tmccowboy]

Re: last post

new carb kits instaled. fuel is fine. this just happens after it runs awhile.

 

[Frank Acampora]

Re: last post

'82 55 with twin carbs and Prestolite ignition--one CD box, two coils mounted on the head? One piece lower unit? right?

I'm just thinking here. If you had a bad CD box or coils, it is unlikely that the engine would run well at high speeds.

These engines had surface gap spark plugs and because of the nature of the ignition system, when these plugs foul--even slightly, It is a bear to start the engine but yet it will run great at anything over high idle speed--if you can get it there.

So, first thing to do if you have not already done so is throw in a new set of plugs--L20V- I think the new Champion number is 332--Don't quote me though. And even if you have changed the plugs, if you still had the problem, you probably fouled the new ones, so clean 'em good.

Possibly a marginal stator would cause the problem because the power it puts out is speed dependent and is lowest at idle and cranking speeds. You would need to test the stator output to the CD box. You need a voltmeter that captures peak voltage (a regular vom will not do) and peak voltage at cranking should be 210 or more.

Next thing these engines --especially the two cylinder ones-- don't like to idle low. If the idle is set too low, and/or the plugs are marginal, they will stall regularly and if you don't put the control handle in fast idle, they just will not start--it's the nature of the beast. So: the next thing to do would be to buy a Clymers manual and re-synch the carb and ignition, and reset the hot idle to specs--about 700-750 in forward gear in the water.

Hope some of these suggestions help.