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Model specific boards => Golf mk4 => Topic started by: paultownsend on 15 October 2012, 12:49

Title: how to change AGU injector seals
Post by: paultownsend on 15 October 2012, 12:49

as above

Is it as easy as unbolting the fuel rail and the injectors/seals pop out? also, is it worth changing the seats? do they just screw in?

thanks in advance  :cool:

Title: Re: how to change AGU injector seals
Post by: Jin_C on 15 October 2012, 17:30

Yup its really easy.

Disconnect battery
Disconnect injector loom connections + TB and crank sensor connectors
Move away the plastic that grabs on to the fuel rail
Unbolt fuel rail and pull out of head
Make sure you have covered area below injectors to soak up fuel
Pull them out of the fuel rail (fuel will start dripping out so try and raise it high)
Use screw driver to replace seals at top and bottom of each injector
Reverse to re-install

Title: Re: how to change AGU injector seals
Post by: mar_k on 15 October 2012, 20:16

I'd like to add, Before attempting to remove the fuel rail and pipes you should pull the
fuel pump fuse out and let the engine run until it dies so the fuel pressure in the rail drops.
Turn it over a few more times to make sure the fuel pressure has dropped to a safe level.