16V KR Rebuild....?

[raks.2008]

I might give it a shot. Correct me if I am wrong, I remove one vacume pipe underneath the throttle body, and dip in a pint of water and keep the revs up until its sucked it all.

Do I use cold or hot water? Would you recommend boiling water? would it clean it more?

I am not sure what the problem is on my car, but its really sluggish. I will try this then do a oil/filter change, Fuel filter change and airfilter, sparks...

I have never changed the temperature sensors or any sensors, but have heard that one of the temperature sensors also help the acceleration is this correct?

Is there a diagram of where what sensor is?

Thanks....

[Mk2George]

Sweet looking valver there raks 

[paultownsend]

cold water matey. the vacume tube that goes to the airbox is what i used 

[DarnPB]

that is utter bo11ox

how can you steam clean carbon off with 1 pint of water !!!!!!

i've seen loads of K series moters that have sucked ALL there cooland into the cylinder and there is soooo much carbon still in there

i have used injector cleaner instead of water and it cured a missfire (sticky valve) on a zetec motor

i personally wont be doing that to my golf

I have never tried this myself, but I can see how the theory works. Water boils at 100 degrees, more if under pressure. So steam, under pressure will be cosiderably hotter (super heated steam) and will carve its way through most things, even baked on carbon.

You can use redex by pouring a little down the bores first and leaving for a few hours to loosen up the carbon on the pistons. This will also get into the rings and may help remove the gummy deposits in the piston ring grooves. Then run the engine up to temp and try the water trick. You will probably remove alot more carbon.

[rubjonny]

worked a dream on my old 1.6 driver, lots of carbon build up due to faulty auto choke.  after a bit of water therapy the car drove smooth as anything and left a foot long black sooty stain on my driveway.

Just becasue you didnt see it on a k-series engine doesnt mean it doesnt work, do you know how much water was getting into the cylinder?  Also ask a few other people who have done a cylinder head after a water into cylinder leak, they do often end up with 1 pot totally spotless

[raks.2008]

Thanks George... Its clean but hard keeping it clean....

I will try this as soon as I refit the rocker cover and top manifold.... I am still a little confused, out of the two vacume tubes that connect under the throttle body, do i dip the one going to the airbox into the water right ?

I am looking forward to doing this, would you recommend doing this like a every year thing?

Thanks guys for your help....

[rubjonny]

yeah thats right, tbh injection cars dont really suffer from carbon build up as badly as carbs do, i did it on my gti and it made sod all difference.  worth a try though not like it'll cost you owt!

[raks.2008]

I was just speaking to TSR about the car being sluggish and they told me that they have a doubt on the fuel delivery and that would restrict the cars performance. They did say bring the car to them with a labour rate of £50/hour and should take about 2 hours tops but its the 4 hour journey putting me off...

I wonder if there are ways to check this myself..? I am sure rubjonny's knows....? Could it be the fuel pump...?

[paultownsend]

the kjet seems to be tempromental and really needs to be set up by experts

[rubjonny]

only way to check fuel pressure is with a proper k-jet pressure test kit, with a bit of know-how and some bodging you could knock up something but make suyre the fuel connections are good as its gotta stand up to at least 6bar for a good safety margin.  I picked up a genuine VAG kit for peanuts off ebay, looks like this: