MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: ducman77 on October 05, 2016, 01:33:48 pm

Title: Injector voltage - please help
Post by: ducman77 on October 05, 2016, 01:33:48 pm
Hi guys,

I am removing my injectors and hoping to clean and test them at the weekend.

Car is an AXX engined, 2005 build, Mk5 GTI

Just wondering does anybody know what voltage I should be putting across the injectors in order to operate the solenoid?

I've done a search on google and I have done a search on here but I can't find an exact voltage.

Thanks in advance for any help. I don't want to fry them :ashamed:
Title: Re: Injector voltage - please help
Post by: v4rley on October 05, 2016, 01:35:37 pm
Following.. would also be interested to know your cleaning method?
Title: Re: Injector voltage - please help
Post by: ducman77 on October 05, 2016, 05:33:51 pm
Thanks v4rley - just planning on doing a pikey clean as per YouTube (see link)

Any of you bright boffins out there know what voltage to put across the injector?? I can't find a spec anywhere!!

I'm doing the inlet valve cleaning Friday morning so hoping to have an answer before then :happy2:

Title: Re: Injector voltage - please help
Post by: ducman77 on October 05, 2016, 07:57:41 pm
Anyone know the answer??
Title: Re: Injector voltage - please help
Post by: r5gtt on October 05, 2016, 08:32:09 pm
If you've watched the video @ducman77 (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=7463) you can see him using a 12v battery to power up the injector  :P
Title: Re: Injector voltage - please help
Post by: ducman77 on October 05, 2016, 08:38:16 pm
Good job buddy :happy2:

I'm just worried that our fancy modern injectors might get fried with a 12V feed??

There's other videos on the Tube of You with guys using 1.5V or 9V batteries??

Last thing I want to do is hit it with 12V and fry it out :ashamed:
Title: Re: Injector voltage - please help
Post by: r5gtt on October 05, 2016, 09:02:59 pm
you'll be fine using 12v just do what he's doing re touching the terminal on and off if you're worried about frying the injectors although constant fees shouldn't be an issue either.

Check step 10 I found after typing the above :wink:
https://www.2carpros.com/articles/how-to-test-a-fuel-injector
Title: Re: Injector voltage - please help
Post by: ducman77 on October 05, 2016, 09:21:27 pm
Thanks a million buddy  :happy2: :smiley:

Really appreciate your help with this. Was being a bit of a nervous nelly about it :ashamed:

Thanks again the feedback it is very much appreciated :happy2: :happy2: :love:
Title: Re: Injector voltage - please help
Post by: r5gtt on October 05, 2016, 09:24:08 pm
no worries and hope I wasn't being offensive with my replies as some people find them a little abrupt  :thinking:  :sick:
Title: Re: Injector voltage - please help
Post by: v4rley on October 05, 2016, 10:04:18 pm
Keep us posted with any progress @ducman77 (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=7463)  :drinking:
Title: Re: Injector voltage - please help
Post by: ducman77 on October 05, 2016, 11:12:09 pm
no worries and hope I wasn't being offensive with my replies as some people find them a little abrupt  :thinking:  :sick:

Not at all. All good, I appreciate the help :happy2:

Keep us posted with any progress @ducman77 (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=7463)  :drinking:


Will do buddy!! I'm hoping to do a bit of a write up and a "how to" on the manual inlet valve cleaning and injector testing/cleaning. Here's hoping it will all pan out ok :happy2: :wink:
Title: Re: Injector voltage - please help
Post by: v4rley on October 10, 2016, 08:14:17 am
Any progress @ducman77 (http://www.mk5golfgti.co.uk/forum/index.php?action=profile;u=7463)
Title: Re: Injector voltage - please help
Post by: ducman77 on October 12, 2016, 10:54:11 pm
Sorry for the delay in responding;

We had a good result with the valve cleaning. But it was a much more involved job than we anticipated!

Mine is an AXX engine and the video guide on YouTube we were using was for a later model engine. So we were ages guessing and faffing around as to how to remove the intake manifold!! We got there in the end though!!!

I've photos and a video I'll upload tomorrow.

We ran out of time to do a proper test and clean of the injectors so we just ended up giving the tips and shafts a good scrub.

Car is running sweeter and throttle response is keener. But overall not much of an improvement. Considering how manky the valves were when we started I was expecting more of an appreciable improvement if I'm honest. But it's a nice feeling to know they're actually clean.

Will do a proper write up tomorrow.....
Title: Re: Injector voltage - please help
Post by: r5gtt on October 13, 2016, 11:05:30 am
That's a shame it's not to your expectations mate but at least you've got it clean as best you can so won't be needed doing for a while now.
Title: Re: Injector voltage - please help
Post by: ducman77 on October 13, 2016, 01:42:22 pm
^^ cheers buddy. Hoping to get some time on the laptop later to upload pictures write up etc....
Regards
Dave
Title: Re: Injector voltage - please help
Post by: r5gtt on October 13, 2016, 05:10:59 pm
Brilliant can't wait to read and save it for later in my bookmarks for when I do it to mine. Hurry up car come back as weathers getting cold and wet :sad1:
Title: Re: Injector voltage - please help
Post by: doylebros on October 13, 2016, 06:34:21 pm
+1 for above also what mileage has the job been completed at?
Title: Re: Injector voltage - please help
Post by: ducman77 on October 13, 2016, 08:24:25 pm
Have to do my poxy tax return tonight and then I'll try and put a proper post together lads :happy2:

Mileage on the car is 75k mikes (120kms). It's definitely a DIY job. I was quoted €350 by a local very well respected VW specialist. By the time I'd bought all the bits and bobs needed for the job it cost me about €200 :ashamed:

But when I go to do it again it'll be much cheaper as I have all the kit now :happy2: :happy2:

Overall a very satisfying job if not all that impressive from a drivability point of view :smiley:
Title: Re: Injector voltage - please help
Post by: ducman77 on October 13, 2016, 11:51:49 pm
Righto ladies.....
Here you go.....
Enjoy :smiley: :happy2: :rolleye:

http://www.mk5golfgti.co.uk/forum/index.php/topic,109372.0.html