Semi Dead Cylinder

[rajp]

Hi, I own a Honda 50Hp 1997 model engine. Was running like a jem but lately i notice very rough idling. Through the elimination process i found that #3 cylinder was not doing its job. Spark is good and so is compression. i have just cleaned the carb and still no joy. However just yesterday i got it work by semi choking the #3 cylinder just with my fingers over the inlet. It obvoiusly means that the cylinder is unable to breath fuel or enough fuel. Any suggetions from anyone, please post.

 

[JB]

Re: Semi Dead Cylinder

Howdy, Rajp.<br /><br />Welcome to iboats. <br /><br />Too often, "cleaning the carb" is like a youngster washing behind his ears. The effort was there, but the results were not.<br /><br />Your symptoms point directly to an over-lean mixture from that carb, which strongly suggests that one of those tiny, tiny passages is partly or fully blocked.<br /><br />Another possibility is a leaky gasket in the intake path drawing some of the air from a source other than the carb.<br /><br />Dismantle that carb. Soak it, then blow out all of the tiny passages or even run a fine wire through them.<br /><br />Good luck.

 

[rajp]

Re: Semi Dead Cylinder

Thanks JB. I will certainly do the carb again and should i also try to tighten the bolts around the intake manifold.