Johnson 50hrp help needed

flmike02

Cadet
Joined
Apr 24, 2006
Messages
9
Hey everyone. I posted a question on this forum a few weeks ago about problems with a 1999 50hrp Johnson. Originally I lost power and it was difficult to start. The suggestions were great but I have not solved the problem yet. So here is my detailed situation. <br /><br />I run the engine with a 50:1 mix. I have checked the compression and both cylinders are getting 120psi. I removed the carburetors and they looked good. I cleaned them with carb cleaner, replaced the gaskets and put them back on. I have spark and the timing looks good.<br /><br />I tried starting the engine again and I have the same problem and a few more. To start the engine I have to open up the throttle and when I bring it back to neutral the motor stalls out. There is now oil leaking out of the prop/exhaust, which might be from choking the engine a lot. Also, the other odd thing is that the carburetors were sweating and cool to the touch and had a kind of white milky liquid coming out of the barrels and into the air silencer.<br /><br />I am thinking that the vro may be bad because it makes a clicking noise a few minutes after I stop cranking the engine. I have no idea why the carbs would be sweating or what the milky liquid is. Any suggestions would be great to hear.<br /><br />Thanks!
 

ob

Admiral
Joined
Aug 16, 2002
Messages
6,992
Re: Johnson 50hrp help needed

White milky liquid = water in fuel, oil reservoir, leaking exhaust cover gasket etc...Did you insure that every fixed orifice and porting within each carburetor was completely clear and free of any gummy restrictive deposits?
 

flmike02

Cadet
Joined
Apr 24, 2006
Messages
9
Re: Johnson 50hrp help needed

I soaked the carbs and there was no sign of any deposits. Infact they were amazingly clean.<br /><br />Would water in the fuel cause the engine to stall at low RPMs?
 

fireman57

Captain
Joined
Aug 24, 2004
Messages
3,811
Re: Johnson 50hrp help needed

Water doesn't burn like premix does. Like ob said you have water entering your system from somewhere. You just need to find where.
 
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