Some Help Broke Down :(

[dazza]

someone mentioned this could be oil? I think its just coolant from removing the head.

Should i test with some petrol/diesel?

[dazza]

I leak tested the valves.
no 7 on the intake side is leaking a lot.

after 30 mins 1,2,4 and 8 on the exaust side have a small damp patch around the stems.

Its hard to see on the intake side.

Surely the 8 valves that hit the pistons need to be changed?

I tried blowing with the compressor, depending on where you put the air you can get bubbles but from a distance only 7 on the intake side has bubbles.

[dazza]

The valves from the intake side are out. Is there a way to test if they are bent? Or should I just replace them all as they hit the pistons?

[dazza]

need to start ordering everything thats needed. I cannot afford to buy from the stealers.

Any particular brands i should use? there are so many and the prices vary a lot.

would Elring be ok for the gaskets?

https://www.autodoc.es/elring/207029

[Octoparrot]

Roll the valves along a flat table, that'll easily show any that are bent. Elring are a good make I believe.

[dazza]

Roll the valves along a flat table, that'll easily show any that are bent. Elring are a good make I believe.

Tried rolling on the table could not see any bent ones. Even the one that was really leaking.

[Octoparrot]

I'd replace them all, you don't want to be doing all this work twice.

[dazza]

Ordered most of the parts I need. Just need to order the bolts.
Are aftermarket head bolts ok?
The liquid gasket has gone hard and there a lots of bits in the top of the head. Could I give it a blast down with hot pressure washer?

Everything is out apart from the injectors.

[dazza]

Trying to find the part number for this pipe. Break booster I think.

https://volkswagen.7zap.com/en/rdw/golf+variant+4motion/golf/2005-420/6/611-611076/

[rich83]

Blimey…. I go away for 2 minutes and we’ve got open heart surgery going on…. Hope you are well dazza and hope you get the engine built back up without too much bother.

[dazza]

Blimey…. I go away for 2 minutes and we’ve got open heart surgery going on…. Hope you are well dazza and hope you get the engine built back up without too much bother.

Thanks Rich, all good here. I'm putting a few hours in each night, its nice to be working on the old girl again. What i really need is a new car for the ball and chain.
Hope all is well with you and the family.

[dazza]

I tested the piston seals with some diesel. Filled to the bottom of the caliper in the pics.

Within 1 hour 45 mins all had dropped 3 were nearly empty.

Maybe this is why I needed to top up the oil often.

[LC5F]

I managed to do this same thing with mine - after swapping my intercooler I managed to nick the edge of my drive belt on the AC union and the belt thread unravelled itself and posted itself into the timing belt.

Despite the financial impact, it was possibly the best thing I have done to my Mk5 - head rebuild & injector clean seemed to restore power. new valve guides & stem seal + DIY Turbo rebuild also helped - now my engine barely uses oil.
As its off, get a vacuum pump rebuild kit from ebay.

If I had to do this again, the only thing I would change is to remove the misery with both timing belt and chain - I managed to get both a tooth out in opposite directions - correctly installed, my BWA belt seems to always be 2/3 of a tooth out comparing cam & crank timing marks.

[dazza]

Pistons are out what should I be looking for here?

[GVK]

Do the rings spin freely by hand? If no they could have been squashed when the valve/piston contact occured.

Any damage to the ring lands (the gaps and part of the piston around the rings)

Now is the time to fit new rings and hone the cylinders.Especially if had high oil consumption.