Make a donation

Author Topic: Inlet valve cleaning  (Read 6239 times)

Offline ducman77

  • Always Involved
  • ****
  • Thank You
  • -Given: 59
  • -Receive: 55
  • Posts: 442
Re: Inlet valve cleaning
« Reply #15 on: September 16, 2016, 12:13:57 pm »
@exodus_ste  - Thanks for starting this thread buddy. I need to do exactly the same job and this is making very interesting reading!

@fab5freddy - How did you tackle this job mate? Did you go DIY or bring it to a specialist?

@stuart-88 - Am I right in thinking that three of the inlet valves will be closed at any one time and only one open? 

I just noticed you mentioned that two will be closed at a time? I definitely don't want any of the "carbon off" leaking down the cylinder bores :scared:

I wanna make sure I am getting this right :happy2:

I was told using  petrol to clean the valves is safer. But I imagine the petrol wouldn't be nearly as effective  at removing the crap as carbon off? would you agree? 

Offline pudding

  • Global Moderator
  • Just look at my post count
  • *
  • Thank You
  • -Given: 2
  • -Receive: 690
  • Posts: 8353
Re: Inlet valve cleaning
« Reply #16 on: September 16, 2016, 12:18:12 pm »
Yeah just pop each cylinder onto TDC before you begin the scrubbage.

Yeah carbon off is serious stuff.  Oven cleaner basically, but strong!  Way better than petrol for initial cleaning.


2007 ED30 | 2009 TDI 140 | 2016 BMW 330D

Offline stuart-88

  • Always Involved
  • ****
  • Thank You
  • -Given: 4
  • -Receive: 21
  • Posts: 425
    • Email
  • My Ride: http://www.mk5golfgti.co.uk/forum/index.php/topic,101197.0.html
Re: Inlet valve cleaning
« Reply #17 on: September 16, 2016, 06:12:53 pm »
As above, just turn the crank by hand and put it into TDC. 2 inlet valves per bore so just do one cylinder at a time, clean it all out and move on to the next  :happy2:

Instagram: stu_nc88

Offline ducman77

  • Always Involved
  • ****
  • Thank You
  • -Given: 59
  • -Receive: 55
  • Posts: 442
Re: Inlet valve cleaning
« Reply #18 on: September 16, 2016, 09:45:34 pm »
As above, just turn the crank by hand and put it into TDC. 2 inlet valves per bore so just do one cylinder at a time, clean it all out and move on to the next  :happy2:
Yeah just pop each cylinder onto TDC before you begin the scrubbage.

Yeah carbon off is serious stuff.  Oven cleaner basically, but strong!  Way better than petrol for initial cleaning.

Thanks guys :happy2: I really appreciate the feedback  :happy2:

Offline fab5freddy

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 238
  • -Receive: 239
  • Posts: 2033
Re: Inlet valve cleaning
« Reply #19 on: September 16, 2016, 09:58:07 pm »
Hey Dave, I took it to a local specialist for walnut blasting. Did the the same time as fitting the TTE and the runner flap delete.

There are no VW specialist walnut blasters down here, so took it to a Mini specialist  :happy2:

Offline exodus_ste

  • Always Involved
  • ****
  • Thank You
  • -Given: 14
  • -Receive: 11
  • Posts: 206
    • Email
Re: Inlet valve cleaning
« Reply #20 on: September 17, 2016, 11:51:57 am »
All good info coming through here. I'm probably going to have a crack at this within the next few weeks so i'll post my findings!


Offline r5gtt

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 342
  • -Receive: 334
  • Posts: 5586
Re: Inlet valve cleaning
« Reply #21 on: September 17, 2016, 12:07:44 pm »
Thanks for all the info guys.

fab5freddy - i will order these bits right away.

Just called rtech to order a PCV delete but they are closed today. Was going to look at the forge kit with catch can but its quite costly!
Don't do it buddy you'll forever regret it. stick to oem pcv and you'll have no fume issues smoking issues. Also forge are absolutely sh***  :doh:

Offline stuart-88

  • Always Involved
  • ****
  • Thank You
  • -Given: 4
  • -Receive: 21
  • Posts: 425
    • Email
  • My Ride: http://www.mk5golfgti.co.uk/forum/index.php/topic,101197.0.html
Re: Inlet valve cleaning
« Reply #22 on: September 17, 2016, 03:17:54 pm »
Thanks for all the info guys.

fab5freddy - i will order these bits right away.

Just called rtech to order a PCV delete but they are closed today. Was going to look at the forge kit with catch can but its quite costly!
Don't do it buddy you'll forever regret it. stick to oem pcv and you'll have no fume issues smoking issues. Also forge are absolutely sh***  :doh:

Where did you vent yours, into the dash board? Once you've cleaned the inlet, it's one of the best things you can do for the engine. It doesn't 100% eliminate the carbon build up, but it certainly helps it.

Instagram: stu_nc88

Offline r5gtt

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 342
  • -Receive: 334
  • Posts: 5586
Re: Inlet valve cleaning
« Reply #23 on: September 17, 2016, 06:19:16 pm »
Thanks for all the info guys.

fab5freddy - i will order these bits right away.

Just called rtech to order a PCV delete but they are closed today. Was going to look at the forge kit with catch can but its quite costly!
Don't do it buddy you'll forever regret it. stick to oem pcv and you'll have no fume issues smoking issues. Also forge are absolutely sh***  :doh:

Where did you vent yours, into the dash board? Once you've cleaned the inlet, it's one of the best things you can do for the engine. It doesn't 100% eliminate the carbon build up, but it certainly helps it.
If only  :signLOL:

Way too many complaints about the delete and fumes venting back into the car so many put the oem pcv back on stage 2 + I know a few have reverted back to the pcv as they complain about the black smoke pouring out the exhaust.

Offline oak_grun

  • Always Involved
  • ****
  • Thank You
  • -Given: 5
  • -Receive: 2
  • Posts: 233
Re: Inlet valve cleaning
« Reply #24 on: September 18, 2016, 05:32:20 pm »
How much does walnut blasting cost?

Offline exodus_ste

  • Always Involved
  • ****
  • Thank You
  • -Given: 14
  • -Receive: 11
  • Posts: 206
    • Email
Re: Inlet valve cleaning
« Reply #25 on: September 19, 2016, 11:22:09 am »
Ok i have done a bit of research and im going to stick with a new OEM PCV. Ok they dont last forever but they arent expensive and i certainly cant be doing with smoke and smells...

Offline vRSAlex

  • Admin
  • Just look at my post count
  • *
  • Thank You
  • -Given: 39
  • -Receive: 253
  • Posts: 2761
    • Email
  • My Ride: http://www.mk5golfgti.co.uk/forum/index.php/topic,19941.0.html
Re: Inlet valve cleaning
« Reply #26 on: September 19, 2016, 03:11:42 pm »
You get a fresher inlet charge with a PCV bypass.   PCV is basically a mixture of air, exhaust gas and oil vapour.  Nice!  Whether that shows on the dyno as a performance gain remains to be seen, but it'll be a very small gain, if there is one.

Worth noting also a full PCV delete requires dumping crank case gases to atmosphere, which is an MOT fail.

Only if they spot it  :happy2:
www.akstuning.co.uk - info@akstuning.com - 01234 822324
Follow AKS tuning on Facebook

Offline Shoduchi

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 220
  • -Receive: 429
  • Posts: 4173
  • My Ride: http://www.mk5golfgti.co.uk/forum/index.php/topic,95592.msg952042.html
Re: Inlet valve cleaning
« Reply #27 on: September 19, 2016, 03:49:10 pm »
If only  :signLOL:

Way too many complaints about the delete and fumes venting back into the car so many put the oem pcv back on stage 2 + I know a few have reverted back to the pcv as they complain about the black smoke pouring out the exhaust.
Some have complaints but not all. I fitted the Forge oil catch can since it was the best I found on the market at the time. Only later R-Tech started selling the complete delete solution.

Mine is working well and I don't see any black smoke pouring out of the exhaust. I do have to empty the can from time to time because it gathers oily water and muck.