pressure testing results

[forest tink]

just done 3 saws-results are as follows

 

jonsered 2165 - 155 psi

husky 346xp - 150 psi

husky 338xpt - 100 psi

 

not sure if the psi on the 338 goes as high as the other saws or i need new ring on the piston,what do you reckon ?,the wee saw does run a bit erratic,i.e goes ok,dies out,picks up,bit gutless etc,any advice greatly appreciated

[MATTMOSS]

just done 3 saws-results are as follows

 

jonsered 2165 - 155 psi

husky 346xp - 150 psi

husky 338xpt - 100 psi

 

not sure if the psi on the 338 goes as high as the other saws or i need new ring on the piston,what do you reckon ?,the wee saw does run a bit erratic,i.e goes ok,dies out,picks up,bit gutless etc,any advice greatly appreciated

 

100 psi is low, anything 130 or lower isn't good

[div_h]

Was it not a compression test you done

[forest tink]

aye was thinking that myself,would explain why it runs poorly

[forest tink]

Was it not a compression test you done

 

no we don't call it that up here

[div_h]

no we don't call it that up here

 

Silly me you must be way up there 😂

[forest tink]

further up than Renfrew bud

[spudulike]

You have done a compression test and that is on secondary compression on the cylinder primary being the compression in the crankcase!

 

A pressure test is putting around 10psi presure in to the crankcase and checking for leaks in seals and rubber parts etc sometimes called a leak down test.

 

The 338 needs a new piston unless the ring has snapped, 100psi is very low, the others are OK

[div_h]

further up than Renfrew bud

 

Thurso?

[forest tink]

You have done a compression test and that is on secondary compression on the cylinder primary being the compression in the crankcase!

 

A pressure test is putting around 10psi presure in to the crankcase and checking for leaks in seals and rubber parts etc sometimes called a leak down test.

 

The 338 needs a new piston unless the ring has snapped, 100psi is very low, the others are OK

 

cheers spud, thought it was a bit low,just ordered one from arb Ireland ,saws quite tidy,too good to be confined to the bottom of the shed anyway lol