1978 johnson 85 horse V4seahorse problems!!! need answers asap... going fishing

muscles

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Jul 17, 2004
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my 1978 85horsepower johnson V4 seahorse lately has been idley rough and missing on 1 cylinder, also when i go to full throttle it has no speed and just goes trolling speed, and it spews exhaust out the water discharge holes and spews water out of the exhaust... i havent ever had problems like this before and i had a compression test and they said it was fine.. they also replaced my fuel lines but yea i bought it brand new and have had no problems since... any help greatly appreciated!!!
 

Hooty

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Re: 1978 johnson 85 horse V4seahorse problems!!! need answers asap... going fish

Re: 1978 johnson 85 horse V4seahorse problems!!! need answers asap... going fish

That thang's twenty six years old! Probably all wore out. Lemme know where ya are and I'll come haul it off for ya. ;) <br /><br />Seriously, it probably needs a major tune-up. I'm talkin' carbs rebuilt, waterpump, plugs, wires and a decarb.<br /><br />Twenty six years and no problems huh? Makes me wish I'd married an outboard.<br /><br />c/6<br />Hooty
 

muscles

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Re: 1978 johnson 85 horse V4seahorse problems!!! need answers asap... going fish

Re: 1978 johnson 85 horse V4seahorse problems!!! need answers asap... going fish

Ya im going fishing this weekend plz can anyone tell me what the problem might be i to get it fixed for the weekend for a 2 week trip... anyone know anything aboit it or anyone had this problem before?????? any help would be apprceated
 

muscles

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Re: 1978 johnson 85 horse V4seahorse problems!!! need answers asap... going fish

Re: 1978 johnson 85 horse V4seahorse problems!!! need answers asap... going fish

plz help!!
 

Hooty

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Re: 1978 johnson 85 horse V4seahorse problems!!! need answers asap... going fish

Re: 1978 johnson 85 horse V4seahorse problems!!! need answers asap... going fish

Dang, I meant to say you probably need a major tune-up, carbs rebuilt, waterpump, plugs, wires and a decarb.<br />How'd I miss that.<br /><br />c/6<br />Hooty
 

Fishingtime

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Jun 7, 2004
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Re: 1978 johnson 85 horse V4seahorse problems!!! need answers asap... going fish

Re: 1978 johnson 85 horse V4seahorse problems!!! need answers asap... going fish

Sounds alot like my 60HP V4 Johnson. I had compression and the problem got worse as time went on. Finally pulled the heads to find a blown head gasket on #1 cyl. Replaced both head gaskets and motor now idles and runs great.
 
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