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Nissan Primera P12 2.2 Injector Clean??
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campbell1987 View Drop Down
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Points: 217 		Post Options Post Options   Thanks (0) Thanks(0)   Quote campbell1987 Quote  Post ReplyReply Direct Link To This Post Topic: Nissan Primera P12 2.2 Injector Clean??
    Posted: 23 Oct 2017 at 12:51pm
Hi all, I have a 2005 primera estate 2.2dci and its sounding a little poor lately, kinda like an old ford transit van, lost that silky smooth nissan sound, but still drives great, 
I have another set of the same injectors removed from my parts car so i was wanting to spray carb cleaner through them both ways to clear any dirt before fitting them, Problem is these Denso AW4 injectors have 4 pins not 2 like all the youtube guides ive watched, So could anyone please tell me which pins i should apply voltage to and which is ground, Also what voltage should i use 12 or less?
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p11primeragt View Drop Down
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Points: 18750 		Post Options Post Options   Thanks (0) Thanks(0)   Quote p11primeragt Quote  Post ReplyReply Direct Link To This Post Posted: 23 Oct 2017 at 1:00pm
These have never had a silky sound lol.

Anyways if it's sounding rougher than normal and the injectors are suspect, take/send them away to a diesel specialist who will pinpoint any faulty ones and clean them at the same time,if the injectors have a lot of miles on them then chances are you should see a improvement in terms of power and smoothness of the engine.
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p11primeragt View Drop Down
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Points: 18750 		Post Options Post Options   Thanks (0) Thanks(0)   Quote p11primeragt Quote  Post ReplyReply Direct Link To This Post Posted: 23 Oct 2017 at 1:02pm
Sometimes on the injectors connector ends they will have the - AND + on them.
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campbell1987 View Drop Down
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Points: 217 		Post Options Post Options   Thanks (0) Thanks(0)   Quote campbell1987 Quote  Post ReplyReply Direct Link To This Post Posted: 23 Oct 2017 at 1:05pm
Yea mate but that sounds pricey, this car has 200k miles on it now so near the end in my opinion so the less put in the better i suppose, If i could find which pins are used to open the injector i think i could clean all 8 even and then watch spray petern and pick the best looking 4??
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campbell1987 View Drop Down
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Points: 217 		Post Options Post Options   Thanks (0) Thanks(0)   Quote campbell1987 Quote  Post ReplyReply Direct Link To This Post Posted: 23 Oct 2017 at 1:16pm
checked there, No + or - on any injector, Can add a pic if it will help but im guessing it wouldnt....
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p11primeragt View Drop Down
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You'll be looking at £100 for a set of diesel injectors to be tested/cleaned.
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campbell1987 View Drop Down
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Points: 217 		Post Options Post Options   Thanks (0) Thanks(0)   Quote campbell1987 Quote  Post ReplyReply Direct Link To This Post Posted: 23 Oct 2017 at 1:36pm
Just rang one guy who is saying they cant be repaired which i think is BS, Can you suggest someone who could sort them, I can see remanufactured units on ebay, 4 for 125, or are they fakes?
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p11primeragt View Drop Down
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Points: 18750 		Post Options Post Options   Thanks (0) Thanks(0)   Quote p11primeragt Quote  Post ReplyReply Direct Link To This Post Posted: 23 Oct 2017 at 6:17pm
Never heard of fake injectors...As for cant be repaired well you can rebuild them so not sure what they mean..

Anyways reman ones would be ideal and I suppose for that price and without the hassle of having to sort the current ones out I would go with that option.

Have you had the current injectors out of the cylinder head? Just that on some diesels they have a nasty habit of seizing in and snapping off. Although never heard of that issue on a 2.2 dci engine tbh..
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campbell1987 View Drop Down
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Points: 217 		Post Options Post Options   Thanks (0) Thanks(0)   Quote campbell1987 Quote  Post ReplyReply Direct Link To This Post Posted: 23 Oct 2017 at 10:03pm
my mistake, that price was for 1 injector not the set.... Can you suggest anyone to rebuild them,
And i havnt removed them from my car yet but i did remove the parts cars injectors and they came out no problem, Really though with 8 i think if i could just figure out how to operate the injector out of the car then i can wash all 8 and see which is best 4 then use them and save a few quid...... :-)
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