Injector cleaning

[CEF11E]

CLEAN YOUR INJECTORS!!!!!!!!!

i just pulled mine out today, the car was running fine but i decided to replace them with a set i just had cleaned to be on the safe side.

when i pulled out the fuel rail i got a nasty suprise. The caps on the end were cracked and the injectors were full of gunk. after flowtesting them 1 was down to 250!!! and 2 were 255. when they should all be 270.

the new set i put in flowed at 285 each.

the responsiveness it much better.

if i didnt replace them the car could have leaned out and gone bang...

if you have bought a car and not had them tested yet it only takes 1 hour to take em out and 1 hour to have em cleaned and an hour to put them back in. you dont know what condition one of the most important things for keeping your engine safe are in.

you wouldnt drive without oil would you?

CLEAN YOUR INJECTORS PEOPLE!!!

here is a quick guide

1.you need to remove 2 bolts one on the front and one on the back of the fuel rail.

2. remove the fuel supply and retiur lines from the rail/regulator assembly

3. remove the bolt from the bracket that supports the rail at front under regulator

4. remove injector clips, i did this with tiny long nose pliers, then unplug all the injectors. dont worry about marking them they are all labled.

5. you can now wiggle the fuel rail out about 40mm. you need to take out injector 5 and 6 to get the rail out from under the plenum.

slide the rail out and check the grommets are NOT on the injector bottoms over the pintle cap. make sure there is a grommet in every hole in the plenum.

wiggle out the injectors from the fuel rail. put them in a clean plastic container and take them to cleaning place.

PUTTING EM BACK IN...

when putting injectors in the rail be very careful to push evenly as not to squash the o rings.

put in injector 1, 2, 3, 4 Slide the rail back in place.

once in place replace injector 5 and 6. this is quite hard.

PLUGS!

injector 6 comes from the main harness. injector 5 comes from the wires on the fuel rail and 4, 3, 2, 1 cone from the injector harness and are labled. replace all the clips.

push the injerctors into holes in plenum and bolt the rail in place.

connect up the fuel supply and return lines and bolt the bracket back into place.

repressurise the rail by turning the car back to "on" check for leaks...

drink cold beer and tell your mates how cool you are cause you fix your own car:)

[tang0]

you got any tips on getting em out ...

once my new ones are clean, gonna have to do this, and it doesn't look like a 2 hour job if you have to take the plenum off ....

CLEAN YOUR INJECTORS!!!!!!!!!

i just pulled mine out today, the car was running fine but i decided to replace them with a set i just had cleaned to be on the safe side.

when i pulled out the fuel rail i got a  nasty suprise. The caps on the end were cracked and the injectors were full of gunk. after flowtesting them 1 was down to 250!!! and 2 were 255. when they should all be 270.  

the new set i put in flowed at 285 each.

the responsiveness it much better.

if i didnt replace them the car could have leaned out and gone bang...

if you have bought a car and not had them tested yet it only takes 1 hour to take em out and 1 hour to have em cleaned and an hour to put them back in. you dont know what condition one of the most important things for keeping your engine safe are in.

you wouldnt drive without oil would you?

CLEAN YOUR INJECTORS PEOPLE!!!

[CEF11E]

oooh, i dont envy you they are a bitch to take out on the rb25...

on the rb20 its just the 2 bolts that hold on the fuel rail, 2 fuel lines, injector plugs and the master feed injector power line. you dont need to take the plenum off

here is a pic for those of you who are not scared.

[letemlaf]

yeah i would like to pull mine out and check, have you got a DIY guide?

[lwells]

Actually, Nathan @ Grey Imports mentioned this to me but yesterday: to quote him "get your injectors cleaned because you loose a lot of power if they're dirty".

It might also be worthwhile buying a couple of "rebuild kits" (ie kits that contain the little rubber seals).

LW.

[joh21m]

are there any tell tale signs u gotta clean em out??? is it expensive to get the mechanic to do it? how do you clean it yourself?

losta questions eh...

Joh

[lwells]

Actually, does anyone have recommendations for a good place to go in the Sydney metro area?

LW.

[hayes_666]

Hell How many miles had your car covered, i just changed my standard injectors to gtr ones and the old ones were in superb condition, my car has only done 100,000km,

If rb25 injectors are worse than rb20 then you are really going to have fun i struggled with my rb20 ones.

Nathan

[CEF11E]

Actually, Nathan @ Grey Imports mentioned this to me but yesterday: to quote him "get your injectors cleaned because you loose a lot of power if they're dirty".

It might also be worthwhile buying a couple of "rebuild kits" (ie kits that contain the little rubber seals).

LW.

Nathan cleaned mine for me, he has a nifty machine that does the job.

take it to him he is in Annandale.

took about an hour to get em cleaned and he is a very freindly guy full of good advice. He cleaned mine for $120. depending on the condition/type they might be more.

I am hopeless writing guides so i cant help there much.

1.you need to remove 2 bolts one on the front and one on the back of the fuel rail.

2. remove the fuel supply and retiur lines from the rail/regulator assembly

3. remove the bolt from the bracket that supports the rail at front under regulator

4. remove injector clips, i did this with tiny long nose pliers, then unplug all the injectors. dont worry about marking them they are all labled.

5. you can now wiggle the fuel rail out about 40mm. you need to take out injector 5 and 6 to get the rail out from under the plenum.

slide the rail out and check the grommets are NOT on the injector bottoms over the pintle cap. make sure there is a grommet in every hole in the plenum.

wiggle out the injectors from the fuel rail. put them in a clean plastic container and take them to cleaning place.

PUTTING EM BACK IN...

when putting injectors in the rail be very careful to push evenly as not to squash the o rings.

put in injector 1, 2, 3, 4 Slide the rail back in place.

once in place replace injector 5 and 6. this is quite hard.

PLUGS!

injector 6 comes from the main harness. injector 5 comes from the wires on the fuel rail and 4, 3, 2, 1 cone from the injector harness and are labled. replace all the clips.

push the injerctors into holes in plenum and bolt the rail in place.

connect up the fuel supply and return lines and bolt the bracket back into place.

repressurise the rail by turning the car back to "on" check for leaks...

drink cold beer and tell your mates how cool you are cause you fix your own car:)

[tang0]

gah

seems like the rb25 will just be a bieatch0r ..

meh

more pain and suffering on the way from the wife in the way of 'spend too much time on the car .. etc'

gah

/me send to a mechanic

[Busky2k]

Good idea. Definitely get them flow tested so you can throw the higher flowing units into the more detonation prone cylinders (cant remember which ones they are on the RBs).

[tang0]

#6, then #5

Good idea. Definitely get them flow tested so you can throw the higher flowing units into the more detonation prone cylinders (cant remember which ones they are on the RBs).