Carborator problem Johnson 115 V4 1979

[breezland]

I have fuel dripping out of what i believe to be the manifold silencer. it is a little hole down to the bottom right on the manifold. anyway the engine sputters and loses power intermittently. i checked compression and is good. At first thought i may have a stator problem but i discovered that when i tilt the engine up gas runs out of that hole. this may be good news since i thought i had a bad cylinder or bad stator. what should i check for now to determine the problem.

 

[Hooty]

Re: Carborator problem Johnson 115 V4 1979

The fuel dripping from the front of the air silencer is o-k.<br />As for your intermittent problem, you're gonna have to tell us a little more. Has the engine set for a while? Was it winterized? When were the plugs changed last? How long since carbs were rebuilt? Has it ever been decarbed? etc.<br />Give us some history.<br /><br />c/6<br /><br />Hooty

 

[breezland]

Re: Carborator problem Johnson 115 V4 1979

engine never seems to get off plane will just putt along then will suddenly take off. then after 10 min or so loss of power and just chugs along. It makes a whinning fluctuating noise. i did winterize engine i sprayed alot of the stuff in engine, had carb rebuilt last yr b4 winterized. replaced 1 power pac. used seperate fuel tank and had the same results. i do not have a tach so i can not give u numbers. i reeved it up today and sprayed carb cleaner in it. can i sprary too much in there. Could it be the stator?

 

[Hooty]

Re: Carborator problem Johnson 115 V4 1979

O-k.<br />Tell ya what do. Get yourself a squirt bottle (the ones that mist are the best) and put some premix in it. The next time your engine falls on it's face, give the top carburetor a shot or two of premix and see what happens. If nothing, give the bottom carb a shot or two and see what happens. If spraying fuel into either carburetor has an effect (engine picks up and runs) that carb is the problem. If squirting the fuel has no effect on the engine, then we'll start looking at ignition stuff. There's a couple of other things you can try too. One is, when the engine stumbles, pump the fuel bulb and see if it's soft or not. If it is, get back and let us know. Another is, when the engine stumbles, choke it real quick and see what happens. This does the same thing as squirtting fuel in the carbs, but you can't tell which carb needs help.<br />Check this stuff out and lettus know what you find.<br /><br />g'luck & c/6<br /><br />Hooty

 

[G DANE]

Re: Carborator problem Johnson 115 V4 1979

Hi Crabahalic<br /><br />Do not spray carb cleaner into carb throats - it will wash off all lubrication in cylinders and only clean carb throats which are clean already.

 

[breezland]

Re: Carborator problem Johnson 115 V4 1979

ok i will spray the gas oil mix and see what happens, should the squirt bottle be set for spray or more like a stream i also have some carmel colored stuff that has dripped from under the flywheel that is why was thinking stator. someone told me that was the insulation on stator melting and could ruin power packs during the hot weather. but that melted stuff has been there for a while. i have pumped the bulb and it had no effect. i already had thermostats replace thinking that it was just running cold. . thanks again for the help.

 

[Hooty]

Re: Carborator problem Johnson 115 V4 1979

You didn't mention the stuff dripping out from under the flywheel. That could be the stator, in fact it probably is. Go ahead and try spraying fuel in the carbs. If that doesn't have any effect, pull the flywheel and check the stator.<br /><br />c/6<br /><br />Hooty

 

[breezland]

Re: Carborator problem Johnson 115 V4 1979

the drippings are old but definitely looks like it is from the stator. i had the engine rebuilt and the block was painted then so it has happened since then. are the sympotoms i have that of a stator failure? also how hard is it to replace? & are stator replacements off the web just as good as a johnson part. the dealer told me a new stator would be about $225 + labor. i would like to do it myself unless it is too complicated for a novice. if i can get a whell puller somone told me it is not too tought a job. Waht do u think

 

[Hooty]

Re: Carborator problem Johnson 115 V4 1979

It's real doable but if ya don't have one, I'd get a repair manual first. Here's a place to get one.<br /><br /> Repair Manual <br /><br />You'll also need a puller. I use a harmonic balance puller but they're several different kinds out there.<br /><br />c/6<br /><br />Hooty