MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: bbfb10 on April 07, 2015, 10:01:01 pm

Title: Injectors
Post by: bbfb10 on April 07, 2015, 10:01:01 pm: Pretty sure my injector on cylinder 4 is knackered, (intermittent misfire, changed plugs and coil packs, still there) so injectors is my next bet. Ive got some standard injectors lined up from a car a mate is breaking, but l was wondering what my other options are?
Are different injectors any better?
If lm looking to go stage 2 in the future would uprated injectors help?
What would be best?

Thanks in advance.
Title: Re: Injectors
Post by: th3_f15t on April 08, 2015, 07:44:55 am: The first advice is have you fault scanned the car as a faulty injector should throw up an error code.

The upgrade option is to fit some Bosch 440cc injectors (sometimes called Audi RS4 injectors) but without a big turbo and high pressure fuel pump they are a bit overkill. But I like overkill and means any stage 3/4 plans are catered for.
Title: Re: Injectors
Post by: bbfb10 on April 08, 2015, 07:58:00 am: I had it scanned, it came up with these codes:

(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fr697%2FBbfb10%2F67A755A5-A247-4F7B-AEA0-ADE5939B939D_zpstdqdxwrm.jpg&hash=f95a0f4a8759224ac2347f7228e9dcbc8e39eca1)

Means nothing to me (!) hopefully someone else will be able to read VCDS.
Title: Re: Injectors
Post by: bbfb10 on April 08, 2015, 10:17:39 pm: Anyone?
Title: Re: Injectors
Post by: th3_f15t on April 08, 2015, 11:40:00 pm: http://wiki.ross-tech.com/wiki/index.php/Category:Fault_Codes
Title: Re: Injectors
Post by: bbfb10 on April 09, 2015, 06:58:48 am: Cheers buddy.
Title: Re: Injectors
Post by: vRSAlex on April 09, 2015, 08:16:53 am: Bosch 440's are different to RS4 injectors. One is for low pressure setups and the other for high. :happy2:
Title: Re: Injectors
Post by: bbfb10 on April 09, 2015, 08:18:44 am: So lm best off just using standard injectors then @vRSAlex (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=1981) ?
Title: Re: Injectors
Post by: vRSAlex on April 09, 2015, 08:20:02 am: Stick with stock.
Title: Re: Injectors
Post by: jamieross on April 09, 2015, 06:24:49 pm: I have the exact same faults. Changed Plugs and coil packs so il be changing injectors soon, so I'll be watching this thread with real interest
Title: Re: Injectors
Post by: bbfb10 on April 24, 2015, 08:03:45 pm: @jamieross (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=8744)

Had the injector on cylinder 4 changed today at Midland VW. Car now drives like a dream.
Title: Re: Injectors
Post by: Flyingscotsman on April 24, 2015, 08:22:12 pm: So VCDS was right about cylinder 4 :smiley:
Title: Re: Injectors
Post by: jamieross on April 27, 2015, 02:57:46 pm: @bbfb10 (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=8716) cheers for the reply mate. Do you mind me asking what sort be price the work cost? Was it just an OEM injector you used?
Title: Re: Injectors
Post by: bbfb10 on April 27, 2015, 03:14:46 pm: It was a new OEM injector. Work cost about £250. Was done in about 3-4 hours.
Title: Re: Injectors
Post by: dane on April 27, 2015, 03:27:16 pm: It's a bit late now @bbfb10 (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=8716) but it can be worth buying a cheap ultrasonic cleaner from amazon, giving injectors a few cleans in that and seeing if it improves things.

It can be a good idea to do this as a matter of course on higher mileage cars as it goes a long way to restoring the original spray pattern.

http://www.audi-sport.net/xf/threads/diy-injector-cleaning-how-to-pic-heavy.119767/
Title: Re: Injectors
Post by: bbfb10 on April 27, 2015, 03:31:21 pm: @dane (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=12298)

Thanks for that, interesting read. Not sure ld be competent enough a mechanic to try that but its good to know.
Title: Re: Injectors
Post by: dane on April 27, 2015, 03:34:54 pm: Quote from: bbfb10 on April 27, 2015, 03:31:21 pm
@dane (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=12298)

Thanks for that, interesting read. Not sure ld be competent enough a mechanic to try that but its good to know.

No worries - I hope linking to another forum is cool lol.

I imagine injectors aren't as easy to access on TFSI engines as they are on 1.8T's though lol :happy2:
Title: Re: Injectors
Post by: Rukz on May 12, 2015, 05:32:54 pm: Hi guys,

Should injectors be changed as a complete set (all four together) or just on the problematic cylinder?

05 GTI DSG 80k
Title: Re: Injectors
Post by: bbfb10 on May 12, 2015, 05:55:37 pm: Hi @Rukz (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=11575) l only changed the problematic one, not sure if this was the best thing to do but its what Midland VW advised. Think the cost would have been quite a lot otherwise.
Title: Re: Injectors
Post by: Rukz on May 12, 2015, 06:16:23 pm: Thanks for getting back to me @bbfb10 (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=8716).

I gave VW a call they quoted me £152 per injector (just the part) :surprised: I think I'll be changing just the problematic one for now