There is some argument about whether to do vac first and pressure second or pressure first and vac second.
Crankcase vacuum tester.
8milelake fuel pump and vacuum tester gauge leak carburetor pressure diagnostics 422.
Azuno compression tester kit 2nd generation digital compression gauge 200 psi with adapter hose 8 pcs set deluxe case petrol engine small engine cylinder compression tester 164.
After my local mechanic did a smoke test and checked the vacuum lines he suggested that the issue might be the pcv valve in the cover.
Test kit for testing crankcase pressure vacuum leaks in 2 stroke chain saws trimmers blowers 2 stoke equipment must use a vacuum pressure pump with the rubber block offs and adapter note.
Price 19.
He verified this by doing the above linked test which showed no crankcase vacuum at idle.
Always gently rotate the crank in each direction to disturb the seal lips and verify that they hold under vacuum.
The morning i went out to replace the pcv.
Not wanting to replace the cover i ordered the pcv valve replacement from ecs.