Injector Cleaning

Firestar_3x

Firestar_3x

Firestar_3x

Caporegime
Joined
11 Mar 2005
Posts
32,250
Location
Leafy Cheshire
My current set of injectors have done an unknown amount of miles, today I've been mess around with a borrowed set of injectors which are the same size etc as mine, after i reset the ecu and checked for fault codes i took the car out for a good spin and it seems to have more power.

So it would appear my current injectors are somewhat clogged up, is it worth sending my injectors off to have a clean or should i simply buy some new oem ones, any idea on cost of proper injector cleaning?

Also does anyone know of any methords for cleaning them at home e.g. taking them out of the car and leaving them overnight in something?
 
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one BMW indy wanted me to pay £1k to have all 6 injectors ultrasonically cleaned! Needless to say, it wasnt done :p
 
Yea the proper places ultrasonically clean them and flow test iirc to make sure they are in spec, just wondered if you could do something at home thats almost as good but lots cheaper, £70 to get an existing set done seems a little high, think i'd rather spend £200 ish on a brand spanking new set, hmm not sure what to do now!
 
Silly question but have you tried a bottle of fuel system cleaner?

I had some pretty decent result with the Millers stuff for my Mondeo tdci, got rid of some flat spots.

Not going to give the results of a proper clean or a new set but worth a punt for a fiver
 
Yea, I've run two bottles of Slick 50 iirc through it one on the oem injectors and another bottle on this set, only ever run v-power though the car for the past 30k so i'd assume everything is a clean as it can get without taking them out and doing something with them.

Cheers Ethos will check them out now.
 
Could it possibly be that the reset of the ECU may have changed the performance rather than the change of injectors ? It may be worth putting the old ones back in without reseting the ECU and see if the performance remains.
 
Dangerous Dave said:
Could it possibly be that the reset of the ECU may have changed the performance rather than the change of injectors ? It may be worth putting the old ones back in without reseting the ECU and see if the performance remains.
Click to expand...

Could be but i doubt it i'm changing the adaption and resetting the thing all the time to test various things out, i only borrowed the new set so my old ones are back in not taken it out for a run yet but i fully expect it to have gone back to its lower power output (so to speak), reading up on the net does seem to state that after 60k and 100k you could drop 10 - 22% of the injectors quoted flowrate, since my cars map should be pushing the injectors duty cycle quite far it would explain why i feel such a power gain from some low mile injectors.

Will give one of those a run through tomorrow Matt, see what happens.
 
In the states you can send your injectors to places like RC injector and they will clean and flow balance them to within strict tolerances. Depending on the place it costs from 15 to 25 usd per injector.

should be similar services here
 
Does anybody know how easy it is to remove injectors from a mk2 MR2? It's something I've always been interested in doing given that every little helps and it's not a huge cost for what could potentially be quite noticable gains.
 
Personally I'd buy a new set for £200. Its a bit different if they are considerably more.

I've read around before and some of the components will still deteriorate regardless. I've had mine cleaned before and the results showed very little improvement.
 
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