Ticking Injectors, Is This An Urgent Fix ?

[Dannyism]

Recently I've noticed a ticking noise sorta coming from the back left part of the engine bay. Someone told me they think its probebly noisey injectors, because when you rev it the ticking goes faster with the revving...

Would this be affecting performance, causing damage or anything else ? Should I get it fixed straight away, if so how much would it cost, roughly?

Could it possibly be something else ?

Also, how do you check to tell if the engine is running lean or rich, or is knocking and that the afm and o2 sensors are working right?

Thanks for any help !

[grim32]

listen to each injector through a screwdriver and you should be able to hear if one is noiser than another. some injectors get noisey but if you are worried get them cleaned and see if that helps

[GeeTR]

Do search.

RB's make a lot of injector noise. Use the afore mentioned screw driver on your ear if a) you think one is nosier then the rest and b) its only just occurred.

If the noise goes away temporarily when the revs drop, after racing it, then its inj's.

Harm? If one partially drops out when your WOT @ redline, sure you could destroy a motor worst case.

[Dannyism]

Thanks for the input so far guys,

The noise is pretty consistent whether engine is cold or at temp. whether its just been raced, driven gently or just turned on.

Ive been quoted $455 to clean and service the injectors, seem fair ?

[Julz89]

yer my car injectors are noisy after a while it goes away and you can hear the lifters lol. umm dat seems a bit much for injector service

[CRoNic...]

Injector tick is normal - my RB26 ticks like crazy.

A new genuine fuel injector costs $330 though... injector clean should be quite cheap as they are simple to get to, etc.

[GeeTR]

The noise is pretty consistent whether engine is cold or at temp. whether its just been raced, driven gently or just turned on.

Ive been quoted $455 to clean and service the injectors, seem fair ?

Hey,

"Raced"as in "free revved while at standstill in neutral" When the revs are dropping, from a "free rev" the ECU cuts the injector signal for a moment, you should be able to hear the difference.

I don't think Iv pad more then $100 to have 6 injectors cleaned and flow tested; that price must include removal / reinstall...? ouch

Edited August 5, 2008 by GeeTR

[Dannyism]

I don't think Iv pad more then $100 to have 6 injectors cleaned and flow tested; that price must include removal / reinstall...? ouch

geetr, ill check for the absence of ticking after a free rev. and if thats the case, the noise is definetly injectors.... good diagnostics.

Thanks everyone for the continued input, my babies getting a major service from a trader on here, so ill look elsewhere for a fairer priced injector cleaning.

I was told by the people who gave me a quote that they would be sonicated, which im almost certain means they would remove them. But how could they be cleaned without removing them (is that what you get for under 100 geetr?) ?

anyway, i think ive decided to let them tick for a few more months and see if it gets worse or better (unlikely).

anyway, i'm so impressed by the knowledge on this forum...

keep an eye out for more of my newbie questions....

[edit]

oh oh i got one !

can i put that crappy injector 'add to tank when you fill' cleaner you see in the servos through my rb25det ? (im leaning towards not but interested to see what people think)

Edited August 6, 2008 by Dannyism