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husqvarna 350 spewing fuel out of intake when runniNG


cameroncrofter
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Interesting...... fuel vapour coming out of the intake sounds like a very worn piston allowing the engine to "free-port" past the piston when the piston is on its downward cycle. I am taking that when you have fitted a "new" carb, the needle valve and diaphragm won't be the issue.

The over revving on a 350 is most likely an air leak on the inlet manifold and possibly on the join between the lower crankcase and the engineered plastic engine cradle that makes up the lower crankcase - it is relatively common and a full pressure and vacuum test will diagnose the issue.

Spiraticly is a new one on me...perhaps "sporadically" is what you mean.....with irregular intervals???

I think the saw needs to be stripped down, the piston checked out and then rebuilt with a full vacuum and pressure test being done on rebuild and then set up with a tach tune at the end....with the symptoms you have.

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9 minutes ago, spudulike said:

Interesting...... fuel vapour coming out of the intake sounds like a very worn piston allowing the engine to "free-port" past the piston when the piston is on its downward cycle. I am taking that when you have fitted a "new" carb, the needle valve and diaphragm won't be the issue.

The over revving on a 350 is most likely an air leak on the inlet manifold and possibly on the join between the lower crankcase and the engineered plastic engine cradle that makes up the lower crankcase - it is relatively common and a full pressure and vacuum test will diagnose the issue.

Spiraticly is a new one on me...perhaps "sporadically" is what you mean.....with irregular intervals???

I think the saw needs to be stripped down, the piston checked out and then rebuilt with a full vacuum and pressure test being done on rebuild and then set up with a tach tune at the end....with the symptoms you have.

I'm gonna use " Spiratically " where ever I can Steve . Great word !

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