Having trouble getting OMC Cobra running

[trihull59]

The video below is what happens when it does actually somewhat "start". But this is only with the starter still engaged the minute I try and put it back to on position at the key it shuts off. Any Ideas?
http://www.youtube.com/watch?v=Kh-isfP_XaU

 

[Don S]

Re: Having trouble getting OMC Cobra running

Did you try giving it some throttle while cranking?

 

[trihull59]

Re: Having trouble getting OMC Cobra running

no do you think that would help? Also doesnt the motor seem to shake a lot and any ideas what that loud noise is?

 

[Don S]

Re: Having trouble getting OMC Cobra running

Never run an engine with a carb on it before have you ?

Yes you need to give it some throttle, and you may need to pump the throttle a time or two to prime the carb and set the choke and move the throttle up to 1/2 or 1/4 to start, and may have to play with the throttle and keep the rpms up to 1000 to 1300 to keep it running till it warms up a bit. May also need a complete tuneup, dwell and timing set, carb adjustment and all that maintenance stuff.

 

[a70eliminator]

Re: Having trouble getting OMC Cobra running

Sounds like She's only hitting about 2 cyls. Could be simple as in not getting gas or more severe like stuck valves and bent pushrods, time for some diagnostic tests, ignition timing, the way the starter is laboring.

 

[trihull59]

Re: Having trouble getting OMC Cobra running

Well the one thing I have noticed is when im turning it over the battery terminals get quite hot. Also I have pulled the plugs and you can tell that all the cylinders are firing. But heres the weird thing. I just took that video an hour ago, now when I went out to try and start it again to give it some gas while trying to start it doesn't fire at all. It's been doing this for the past 2 days its very intermittent when it wants to fire and when it doesn't.

 

[Don S]

Re: Having trouble getting OMC Cobra running

Pour about a shot glass of gas into the carb, put the flame arrestor back on, and try to start it. May take a couple of times to get fuel pumped up to the carb again.

 

[Bondo]

Re: Having trouble getting OMC Cobra running

Well the one thing I have noticed is when im turning it over the battery terminals get quite hot.

Ayuh,.. They're probably corroded...
Corrosion equals resistence,...
Resistence equals Heat...

 

[trihull59]

Re: Having trouble getting OMC Cobra running

Well I went to napa and bought points and rotor and it works flawlessly now! heres the video of it after replacing them. It was most likely the points rather then the rotor but for 4.99 I bought the rotor too.
http://www.youtube.com/user/snowboardersw14#p/a/u/0/COl-Mr1UfoY