husqvarna 350 spewing fuel out of intake when runniNG

[cameroncrofter]

HI I HAVE A HUSQVARNA 350 and it start but when running bogs down and revs high spiraticly while running also fuel spits out of intake tried new carbs fuel tank nearly everything but nothing is working :(

[spudulike]

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.

[Stubby]

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 !

[spudulike]

Just now, Stubby said:

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

I don't believe it exists Andy but...carry on using it if you like!

[Stubby]

Just now, spudulike said:

I don't believe it exists Andy but...carry on using it if you like!

It describes the action of a helix me thinks 🙂

[spudulike]

Have you had a few? I have and it still makes no sense

[cameroncrofter]

5 minutes ago, spudulike said:

Have you had a few? I have and it still makes no sense

this is my second 350 avsoulotley boggles my mind current;ly uploading a video of it running 

[Stubby]

5 minutes ago, spudulike said:

Have you had a few? I have and it still makes no sense

I have had 2x Golden Champion ale by Badger . Its my fave ....👍

[cameroncrofter]

 

 

[spudulike]

5 minutes ago, Stubby said:

I have had 2x Golden Champion ale by Badger . Its my fave ....👍

Half a bottle of Chardonnay here....things are looking spiratical!!