1973 55hp Chrysler probs

[downunder83]

Hi, this is my first post (hopefully of many), I come to you from down under Australia, and am having a bit of trouble with my outboard.<br /> <br /><br />It starts first time, every time - unusual for an outboard, but when I get it to about 1/2 throttle it misses big time, perhaps bout 5 seconds apart & sometimes feel like it's about to die. Does anyone know what could be the cause of this, the plugs look Ok, I havet done a compression test on it as yet, so I cant rule a head gasget out.<br /><br />Somebody told me that they think it could be te power head, but I am thinking more along the lines of it being somethiong electrical.<br /><br />Any opinions/ideas will be greatly appreciated.<br /><br />cheers

 

[fishead]

Re: 1973 55hp Chrysler probs

what kind of motor and what size is it i know bugger all about the outboards but the more info you post here more others can help ya. me from aussie as well. Grab your self a manual most things can be done by your self their pritty self explanitory. cheers and good luck

 

[fishead]

Re: 1973 55hp Chrysler probs

my apologies did not realize you had posted motor type and size. well anyway good luck with it.

 

[rwise]

Re: 1973 55hp Chrysler probs

downunder83<br />first welcome to Iboats!<br />second, most here seam to like seloc manual better than clymer. I found mine on ebay but should be available here, http://www.boatmotors.com/manuals.html <br />next it could be electrical, but I would clean the carbs first.

 

[DJ]

Re: 1973 55hp Chrysler probs

It starts first time, every time - unusual for an outboard,

Actually, that is very typical for an outboard.<br /><br />!. Do a compression test. All cylinders should be within 10 psi of each other.<br /><br />2. Is your primer bulb (in the fuel hose) going flat while running? Thus starving for fuel.<br /><br />3. Run it with the fuel cap loose. Again, checking for fuel starvation.

 

[scotiany]

Re: 1973 55hp Chrysler probs

Don't forget that fuel pump diaphragm in addition to rebuilding or cleaning the carb. Also, the puddle valve system could be clogged but, I'd go with the carb and the fuel pump first. Both are cheap and easy to repair.

 

[downunder83]

Re: 1973 55hp Chrysler probs

Could it be a power pack?