Removing the fuel rail..................

[SimonV8ster]

I've got the plenum and trumpet base off and now I need to take the fuel rail off. Does it just 'pull' off the top of the injectors ? Have I got to be brave and give it a tug ? Can't see anyway of unscrewing them so I assume they just push fit on ?

And what is the 9th injector for ??!!

[MADMAX2]

SimonV8ster said:

And what is the 9th injector for ??!!

just in case it was fitted on a V9???

[spend]

If the rail has been on a long time it might take a fair bit of prising off... injectors might come out of rail or manifold??? replace & lube all the o-rings they aren't expensive

'9th inj' is probably the temp sensor - it does not sit in fuel but a blind bung.

[SimonV8ster]

Thanks. Do they pull off though ?? Just straight forward jank upwards ?? No twisting/turning, etc.

the ninth injector does indeed seem to go into a blank hole.

[spend]

I prise them off gently/gradually with large wooden levers to spread the load, they have all been pretty tight unless fettled recently. Cleaning the stuff (and holes) up is a job in itself before you put it back together

[GreenV8S]

The injectors are a tight fit in the fuel rail and into the manifold. The top of the injector is also secured to the rail by a clip. Take a good look at this before you remove it, because it engages a groove on the injector and there are several grooves - obviously you need to use the correct one.

[SimonV8ster]

Cheers. Got them off, all came out of the manifold. See what you mean about the O rings now.

Any particualr way to clean the injectors or anyting else I need to do to them before they go back in ?

Just stuck taking the inlet manifold off now - its stuck on well and truely !! unless theres a hidden bolt or two somewhere !!

[GreenV8S]

SimonV8ster said:

its stuck on well and truely !!

Yes, they do tend to stick quite well.

[hoach]

there is a little U clip a the top of each injector connectng them and the rail together.

the injectors 'pop' out of their seals,, WD 40 and a twist frees them up nicely.

you can pop the injectors out still connected to the rail if it were not a V type engine. I think you still can but you may bend the rail.

[GreenV8S]

hoach said:

you can pop the injectors out still connected to the rail if it were not a V type engine. I think you still can but you may bend the rail.

I prefer to keep the injectors in the rail and pull them out of the manifold, but you can do it either way round.

[brogenville]

SimonV8ster said:

Any particualr way to clean the injectors or anyting else I need to do to them before they go back in ?

Ultrasonic bath is the way forward. You can get a good-enough domestic ultrasolic cleaner off ebay for circa £30, or you can pay £100 or so for a professional reconditioning service. I used a 50W ulteasonic bath off ebay, and it certainly "appeared" to work well, as the bath was full of very fine silt after the injectors had been in it for a few minutes.

[daz the plumber]

what colour should the o rings be ?mine are bright green and look more like fibre than rubber ,the ones on flea bay are black rubber .which type do i need as mine have not been fitted right ,there sitting below the cir clip .think thr green fibre spacers wedge between the cir clip, some of mine are not connected .when i twist one of them it isses , letting air in .and i cah hear a change in engine speed

Edited by daz the plumber on Monday 17th November 14:35

[K4TRV]

From Rimmers Page there are 2 washers needed per injector:

http://www.rimmerbros.co.uk/rimmer/v8engine/efi

[SimonV8ster]

£2.60 for a bloody rubber ring smaller than my finger nail ??!!

[K4TRV]

They do suggest an alternative

http://www.rimmerbros.co.uk/cgi-bin/rimmer?findpar...

Price is £1.05 "bargain" or zero if you use the originals??

[spend]

SimonV8ster said:

£2.60 for a bloody rubber ring smaller than my finger nail ??!!

Bet Max pays a lot more than that down Euston way

Just try your local injector specialist, they probably have bucket loads

[GreenV8S]

daz the plumber said:

what colour should the o rings be ?mine are bright green and look more like fibre than rubber ,the ones on flea bay are black rubber .which type do i need as mine have not been fitted right ,there sitting below the cir clip .think thr green fibre spacers wedge between the cir clip, some of mine are not connected .when i twist one of them it isses , letting air in .and i cah hear a change in engine speed

Sounds utterly bizarre, can you post a picture showing these? The 'o' rings are not visible when the injector is installed but perhaps you're confusing them with something else.