Pops but won’t run

[vquinoveva]

Need a little help, 066 pops a few times then dies, won’t run. changed fuel, new air filter, fuel filter only has less than an hour on it, new spark plug, swapped carbs, checked timing, changed coil with another I had laying around, doesn’t matter if I have one or both needles turned from 1/2-1.5 turns. It ran fine just a couple weeks ago… running out of ideas. ran fine a couple weeks ago


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[grizz55chev]

Need a little help, 066 pops a few times then dies, won’t run. changed fuel, new air filter, fuel filter only has less than an hour on it, new spark plug, swapped carbs, checked timing, changed coil with another I had laying around, doesn’t matter if I have one or both needles turned from 1/2-1.5 turns. It ran fine just a couple weeks ago… running out of ideas. ran fine a couple weeks ago


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Pull the muffler and have a look.

 

[vquinoveva]

Pull the muffler and have a look.

It’s on my list to do tomorrow but I just built the saw not even a month ago and was running fine a couple weeks ago


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[redunshee]

Not exact same issue but I rebuilt a saw last year and it wouldn't run. Found that I had forgotten to remove the rubber tube used to block the muffler while pressure testing. Egg on my face.

 

[Ozhoo]

Check your impulse hose

 

[vquinoveva]

Check your impulse hose

It looks ok, saw ends up fouling the plug. Not sure it’s a fuel delivery issue


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[frank_]

i usually shut the needles off (or empty the fuel system) and then run it from a drop of fuel on the air filter with random flooding problems
it gives you more control of the fueling , if it fires up for a few secs then dies then its more apparent

 

[Clyde85]

If it is to flooding check the metering diaphragm for holes and the metering lever that it is set properly.

 

[vquinoveva]

If it is to flooding check the metering diaphragm for holes and the metering lever that it is set properly.

I’ll check it but I just rebuilt the carb and had it running a couple weeks ago and even swapped with a different carb and seems to be the same issue


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[Yukon Stihl]

Have you checked the piston yet?

 

[Clyde85]

I had the screw that holds the fulcrum in place come loose in a carb I rebuilt last winter. That threw me off.

 

[Bob Hedgecutter]

If all else is "correct" as stated my first jump to conclusion would be an air leak.
But as others have said, pull the muffler and check the piston- report back with photographs.

"saw ran fine two weeks ago"- for how long did it run?
"just built the saw less than a month ago" - was it an OEM, or AM build? What was replaced and what was not?

 

[Clyde85]

Stuck rings or a scored piston and cylinder could cause the trouble to.

 

[vquinoveva]

If all else is "correct" as stated my first jump to conclusion would be an air leak.
But as others have said, pull the muffler and check the piston- report back with photographs.

"saw ran fine two weeks ago"- for how long did it run?
"just built the saw less than a month ago" - was it an OEM, or AM build? What was replaced and what was not?

I’m at work but leaving soon, saw has maybe 30 min run time total, I’ll peel it apart and report back later today


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[Bob Hedgecutter]

I’m at work but leaving soon, saw has maybe 30 min run time total, I’ll peel it apart and report back later today


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30 minutes is not much - but it is enough to cause some pretty serious damage if anything was causing a lean condition.

 

[vquinoveva]

30 minutes is not much - but it is enough to cause some pretty serious damage if anything was causing a lean condition.

Well my dumb ass didn’t physically remove the flywheel when checking the time and check the key….. sheared key…. Thanks all for the responses. Fortunately almost no carnage


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[Clyde85]

Glad it worked out.

 

[Oregon85]

Well my dumb ass didn’t physically remove the flywheel when checking the time and check the key….. sheared key…. Thanks all for the responses. Fortunately almost no carnage


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Hahaha I literally just had the same issue on a 372xp today. Checked lines, fuel for water, carb, then finally the fly wheel… it had play so I knew the key had wiggle… had a spare from an old saw swapped that still would only pop… was the ignition coil… which I replaced last July…. Wtf husqvarna an ignition coil only lasting 11 months!

this is why I’m looking to get into stihl saws, I have such a sour taste in my mouth from husqvarna oem parts the last 5 years.

 

[vquinoveva]

Hahaha I literally just had the same issue on a 372xp today. Checked lines, fuel for water, carb, then finally the fly wheel… it had play so I knew the key had wiggle… had a spare from an old saw swapped that still would only pop… was the ignition coil… which I replaced last July…. Wtf husqvarna an ignition coil only lasting 11 months!

this is why I’m looking to get into stihl saws, I have such a sour taste in my mouth from husqvarna oem parts the last 5 years.

Funny thing is I’m the opposite, I hate stihl and swore my 066 and 036 are the only two I’m ever gonna have


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[Oregon85]

Funny thing is I’m the opposite, I hate stihl and swore my 066 and 036 are the only two I’m ever gonna have


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At the very least if you like to and have the time, it’s way easier to buy husky replacement parts to stock up on. I was hoping husky would answer back with fuel injection by now.

the 562xp is being killed by the ms400 in power to weight now too. Now that I’m getting older it matters.