Hi all

Car is 2001 Fiesta mk4 1.3 Endura-e engine

problem is car jerks under acceleration but under some circumstances:

it starts at around 2100rpm until it reaches around 2600rpm

under or above these rpm car accelerates fine

i havent paid attention much but i think it happens only when engine is warm

so that brings me to think it has something to do with the Evap system

i have to say i been having this issue for quiet a time now but it had only a slight hesitation during the acceleration but now the hessitation seems to increase

what do you guys think?

i was thinking about disconnecting the purge valve electrical connection and test drive the car so i can isolate the problem to the Evap system if the jerks wouldnt occur

is it safe to drive the car with the purge valve disconnected?

thanks in advance

Harel