How do the injectors seperate from the fuel rail, I've slid off the little metal clip but the injectors are still in quite tight, Im assuming there just a push fit with an O-ring and need a firm tug to get them out? Just thought I'd check though before I go and do some damage!

 

yep they just pull out, dont be afraid to give em' some yeehaa

 

As said they simply push in, but if not moved for years they can be truly stuck.
I've had cars where I have had to lever them out, try to wiggle from side to side, and spray some GT85 around the seal area, in all likely hood this won't do a thing but got to be worth a go!!
A bit of brute force needed, fortunately they're very strong physically.
tabetha

 

Managed to pull them out easily enough. Is it a good idea to put a smear of grease or vaseline or anything on the O-rings when refitting them?

 

never put vasaline on O-rings!!!!

its petroleum based so will degrade the O-rings.

just clean the surfaces well and use fresh O-rings

 

Ha ha never heard something so funny!!

Try also NEVER to put any PETROL near the injector seals, even though one side sees petrol 100% of the time in the injector rail.
I just use a HMP grease, hmp as it is nearest for me, DON'T use WD40, it dries the seals out and can tear them putting them back in.
tabetha

 

my bad....

i'll take a with honour.......

 

Trust me I've done worse, in the "old" days they had old fashioned ignition with a dizzy, points etc, the amount of times I've sworn at an engine that wouldn't start, whilst the rotor arm was in my pocket or on top of the engine etc staring at me is is unbelievable!!
tabetha

 

ha ha, i did that once with my nova