JR hydraulic tappets bleed question

Post by **camper** » 03 May 2007, 12:31

Have a m2 golf 1.6td JR engine in the van.I have a noisy tappet it takes a while before it stops tapping ie engine needs a run to get hot before it stops.If i replace the hydro tappets for new can any one advice the procedure for pumping the buckets up with oil before fitting.Thanks

Post by **tonytech** » 03 May 2007, 15:10

I'm sure some clever bugger will drop in shortly and give a better answer.

This might be better in the alternative engine section.

I'm sure I've read about the ' noisy tappet syndrome caused by the angle of the engine in the T25'

T

Post by **toomanytoys** » 03 May 2007, 15:48

prob the same as for a wbx tappet... but dont know..
Also what grade oil you using? I would have thought the D/TD needs at least a 15w40 oil too..

Post by **camper** » 03 May 2007, 16:43

I changed the oil to 15x40 semi synthetic + new filter. Been looking at a T4 forum which said high mileage hydraulic tappets can make this noise.The hydro buckets are not like a 2ltr cu there is no clip to remove to fill them.I suppose they are kept under engine oil and compressed a few times to fill up.I'm sure I've read about the ' noisy tappet syndrome caused by the angle of the engine in the T25' .That might be one reason.

Post by **camper** » 04 May 2007, 18:58

I would agree i should have put this in the alternative engine forum.But i can answer my own question .GSF supply a engine set of hydro tappets i inquired to ask about bleeding them .They very helpfully telephoned a VW trained technician/mechanic who said the tappets are pre filled with oil.Adviced take it easy on the revs when newly fitted on first engine start.

Post by **fairwynds** » 06 May 2007, 20:25

rattling tappets can be dealt with by:

1) Oil change - correct grade
2) Filter change - correct filter with the internal valve/flow 'widget' (that the cheapies often dont have!
3) If you want to go the whole hog - remove and clean up tappets (or replace if needed) - the dissassembly of em is easy, but you will need a vice to reassemble.

These pics (1900 DG) might help....

All taken apart (keep them in their respective orders AND replace in same places!!!!)

Compressing tappet - having filled with oil, piston goes in and a suitable bolt is used to slooooowly compress.

After filling with oil and rebuilding them, keep the under bath of oil till needed.

Post by **wasserleaker** » 06 May 2007, 23:24

if you mean, how to fill the new tappet with oil before fitting, this is what i was advised to do by an engine rebuilder, and i have had no tappet noise since, and i changed all 8 of em when rebuilding my engine,
simply pump the tappet full of oil thru the hole in the side,hole upwards, using an oil can with a nozzle until you cant get any more in, you'll know this when firm pressure can't compress the plunger.
this was on a 2.1 waterboxer but the theory is good for any hyd. tappet.

Post by **camper** » 07 May 2007, 05:54

Job done replaced all 8 hydraulic tappets.GSF supplied new are all ready filled with oil.Engine start okay no problems.Thanks for the input.