Loud tapping noise !

[jeffdub]

wonder if someone could help me please ? Took the van to busfreeze and back no probs drove to work just now and theres a loud tapping sound coming from the engine have noticed erratic tickover when cold is this related ? Thanks in advance

[Titus A Duxass]

Telling us which engine would be helpful as the crystal ball is in for a polish.

[jeffdub]

Oh sorry its a 1.9 dg

[Ian Hulley]

Sounds like a classic drained tappet to me, does the noise go when warmed up thoroughly ?

Ian

[jeffdub]

Im not sure ian i only noticed it when i pulled up outside work its only 2 miles from my house so doesnt get chance to get warm if it is a tappet whats the cure ? Thanks jeff

[Ian Hulley]

Im not sure ian i only noticed it when i pulled up outside work its only 2 miles from my house so doesnt get chance to get warm if it is a tappet whats the cure ? Thanks jeff

When was the oil last changed ? 15/40w MINERAL oil ? Take the old girl on a good 20 minute run and see if it clears.

Ian.

[jeffdub]

Thanks ian checked the oil halfway between the marks and black so i'll change oil and filter

[Ian Hulley]

Thanks ian checked the oil halfway between the marks and black so i'll change oil and filter

4.5 litres of mineral 15/40 oil and Mann W719/12 filter

Ian

[jeffdub]

Thanks for your help ian im new to t25s and appreciate your advice

[kevtherev]

If you use the search or the wiki there's a lot of info about hydraulic tappets and their tantrums.

Read this and know your lifter!.. http://www.ratwell.com/technical/HydraulicLifters.html" onclick="window.open(this.href);return false;

It's a commonly asked question here for those new to old VW's so don't feel bad