See more from Ask Carzone 
I had a new fuel pump fitted to my Leon...
Hi, recently had a new fuel pump and 4 injections put into my 171 seat leon. Does the injectors and engine all have to be timed??
Our answer:
Hi Tamara,
The fuel pump is driven by the timing belt at the front of the engine and yes, its timing is crucial. To fit it, the timing belt would usually be removed and hence the timing set on reassembling it all.
Have a motoring question? Ask us here!
Ask us anything motoring related and please provide as much information as possible so we can give you the most accurate advice.