Ms038 possable air leak

[species8472]

Friend got me to have a look at his 038 said it was hard to start. Cleaned out air cleaner and got it running sort of. Gave it a rev and thought what the hell.
turned the high setting back to 1 turn out to start again and this happened. Air leak? Goes from pig rich to screaming its head off.

 

[Wonkydonkey]

That don’t sound good,

The only real way to determine an air leak is to test it.
when you say you cleaned out the air filter, has it ingested saw dust. if it has done, it may have been eating it for some time.

While setting up for a pressure test I,d have a good look at the piston & cylinder,

Does it have good compression?

But havin said all this it just maybe the carb,

I'll be subscribing to this

Cheers


Edit: I can’t help thinking I can hear some sort of knocking at lower rev/ tick over

 

[species8472]

That don’t sound good,

The only real way to determine an air leak is to test it.
when you say you cleaned out the air filter, has it ingested saw dust. if it has done, it may have been eating it for some time.

While setting up for a pressure test I,d have a good look at the piston & cylinder,

Does it have good compression?

But havin said all this it just maybe the carb,

I'll be subscribing to this

Cheers


Edit: I can’t help thinking I can hear some sort of knocking at lower rev/ tick over

Air filter wasn't to bad. When I get a saw its the first thing I do. Compression is very good. P and C look good just checked intake and impulse good.

 

[Moparmyway]

Friend got me to have a look at his 038 said it was hard to start. Cleaned out air cleaner and got it running sort of. Gave it a rev and thought what the hell.
turned the high setting back to 1 turn out to start again and this happened. Air leak? Goes from pig rich to screaming its head off.

Put a carb kit in it
Most likely there isnt any air leak, as it returns to idle very nicely
Chances are that its just not getting enough fuel into the intake, probably from a stiff carb diaphragm

 

[species8472]

Put a carb kit in it
Most likely there isnt any air leak, as it returns to idle very nicely
Chances are that its just not getting enough fuel into the intake, probably from a stiff carb diaphragm

Was thinking that will get one.

 

[Canadian farm boy]

Put a carb kit in it
Most likely there isnt any air leak, as it returns to idle very nicely
Chances are that its just not getting enough fuel into the intake, probably from a stiff carb diaphragm

This ^^^^ plus I'd be changing the fuel filter. Might not be a bad idea to check out the condition of the fuel line while you have the carb off.

 

[species8472]

Carby was full of crap new kit/fuel line and filter. will see how it goes in morning. Thanks all.