Hydraulic lifters

[Davegrohl99]

Hi on my 2.0 CU Aircooled engine the tappets are quite noisy. And all of a sudden. Had a look and found that one of the hydraulic lifters has become squishy.

Is this a sign of a new one is needed all the other ones are hard when pushing in with the push rod.

Thanks!



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[Cobra88]

low oil level.
due an oil change.
wrong grade of oil.
not been run out on road for a while.

could be the above or possibly just that follower is damaged
Rick

[Davegrohl99]

I changed the oil whilst I had it up on the lift.

It was at a good level before I changed it and prob only had 1500km on the oil.

I have changed oil filter and new 20W50 mineral oil. I have always used this grade of oil.

Yes it hasnt been driven in a couple of days but its gets at least a drive once a week. Did about 150km last weekend.

It was definitely squishy so either air is trapped or its given up the go. I might order a few to have spare even thought they are quite expensive.

Thanks for the help!

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[Cobra88]

oh dear, probably a dying lifter then

might be worth looking at the end of the rocker screws but you probably already did that.

on my wbx i had a pushrod that wasn't letting the oil go through it but not sure if Aircooled have oil flowing through the pushrods
like the wbx.

i might be wrong but it looks like they have oil running through them

Rick

[Davegrohl99]

Ya they do indeed have a passage for oil. I cleaned them all out and blew with a compressor when re installing after the rebuild.

Looks like a few new Lifters will be heading my way soon

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[davidoft1]

You can just replace one, run it for a while until it pumps up, repro ones don’t seem to be as good as originals, on the plus side air cooled ones are pretty easy to change

[Rosie n' Jim]

Mine quietens down quicker as the oil warms, but in this cold spell that takes much longer.

[sarran1955]

Hello,

Hi on my 2.0 CU Aircooled engine the tappets are quite noisy. And all of a sudden. Had a look and found that one of the hydraulic lifters h
as become squishy.

Is this a sign of a new one is needed all the other ones are hard when pushing in with the push rod.

Thanks!



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These often leak down, as they are intended to rotate gently when in use.. so odds are you have 1 that is a bit stuck in position..
I have 1 on my CT that does this... a good 30 minute run will put things right..

Then check your tappets, engine warm, 1 litre of oil drained, contact + 1 to 1 1/2 turns, ...

The trouble with aftermarket cam followers is that they are rarely as good as OEM.....Kolbenschmidt..

Cordialement,


 

[Davegrohl99]

Replaced it this evening with OEM Kolbenschmidt from brickwerks. Went round and checked the rest while I was there.

Took it for a run and no more noise.

Job done. Until the next thing breaks

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