A question about tools

the Nefyn cat

the Nefyn cat

Zorg Guru (IV)
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Actually in Nefyn. My, that took a while.
Model of Z
2.2i Sport
Some of you may remember a thread on here a while back about excessive oil consumption on some M54 engines. I had at the time convinced myself that my cars' heavy drinking was caused by gummed-up oil-control rings but after four flushes and oil changes it seems that isn't the case. I'm now thinking about changing the valve stem oil seals, and wondering if anyone here has ever used something like this http://www.ebay.co.uk/itm/OVERHEAD-...eals-Without-Removing-Head-/261885266904?hash to do the job? Saves taking the head off, just not sure if there's enough room around the valve springs to get the tool in.

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Unless the car initially smokes on start up after being stood for a while, and then clears it is unlikely that it is the valve stem oil seals. If it does do this then It likely is the seals.

Tony.
 
Yes indeed, plenty smoke on start-up, clears up after a few seconds, but there's a fair puff on pulling up at junctions and moving off again. And it's getting through oil like a two-stroke. Not had this problem with the other BMWs I've had in the past, but this is the first M54 I've had.
 
On reading that I would say that some of the valve stem oil seals have got hard and have probably come of the valve guides and are moving freely on the valve stems. Looks like a head off job. Good luck.

Tony.
 
mine was terrible on oil, nearly every trip I had to top it up but I changed that PCV valve and all the pipes, even the dipstick O-ring and after that its not used a drip :o honestly nothing even after 1000+ miles not added a drop
 
I think @Lee looked in to this a while back when looking at another Zed which smoked like hell. Not sure if he has any experience of this particular tool though...
 
been thinking about this tool you showed and there is something in the back of my mind that remembers seeing this done but I have a feeling while it was being done the cylinder was being fed with compressed air to keep it pressurised and the valve closed :) (sorry if i'm telling my granny how to suck eggs :()
 
I agree with @Dickymint that to use that tool a spark plug is fabricated with an air valve and compressed air is used to keep your valve from dropping into your engine when the spring pressure is removed. I believe the ceramic is broken off and the metal drilled and tapped to take a compressor fitting. HTH JIM
 
So nobody's used one? Guess I'll have to give it a try. As for the compressed air bit, not much chance on a horse yard. Quite a few years ago I did the same job (change seals on an old MGA) not with air but by feeding some thick string/thin rope down the plug hole and using that to hold the valves up at TDC. That'll do the same job on a BMW, I hope.
 
I have seen it done using a compressed air feed and it appeared to work, but that was in the 60's. I have not heard of it since then. I would be very careful introducing anything solid through the plug hole. It isn't what you put in; it's what you don't remove afterwards.
 
The commercial tyre fitters at work have some very heavy duty "O" rings on their trucks. These are about 7/16" thick and 20" dia. I would think that they would hold a valve up and would be easy to remove. I could lay my hands on one if you like?

Tony.
 
t-tony said:
The commercial tyre fitters at work have some very heavy duty "O" rings on their trucks. These are about 7/16" thick and 20" dia. I would think that they would hold a valve up and would be easy to remove. I could lay my hands on one if you like?

Tony.
Click to expand...

Thanks for the offer,but having already been successful with some cord I'll stick to what I know. There can't be a lot of clearance between the pistons and valves, won't take much to hold the valves up. Just have to get a whole load of bits together.
 
for some reason i thought this thread was about stupid people, right tool eh:)
 
Did you ever resolve your heavy oil use ,I seem to be using more than previous.
 
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