Engine trouble codes

[Chris1.6]

Hello i have gotten the 2 following codes in my 1.6bse leon 16686 cylinder 2 misfire detected and 16555 fuel trim bank 1 system too lean and i dont know what to do to find the problem or to fix it ive heard its a vacuum leak or a injector the MAF sensor but it dont know anyone got an idea?

 

[R3k1355]

Could be a few things, maybe try swapping the injectors between cylinder 1 and 2, see if the fault codes follow?

 

[Chris1.6]

Could be a few things, maybe try swapping the injectors between cylinder 1 and 2, see if the fault codes follow?

good idea will try that when i get the time