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TICKING SOUND

M

MIKE VERRAN

New member
I took delivery of my 40th aniversary 911 in april, it is lovely car except for an annoying ticking comeing from the engine on tickover which is very noticeable with the window down it sounds like a loose tappet is this normal or does the car need to go back to porsche for further investigation?
 
If you leave it to idle for say 5 minutes does it then go away. If so then it is a lazy hydraulic tappet I would guess. They fill with oil to take up the slack. Mine did it a while back but then it was serviced and it was fine but occasionally it still does it now (2000 miles after service) I put it down to the oil temp and possible faulty tappet. I was told it is not uncommon with these tappets - has anyone else here experienced it?
 
Hi Barry. We need a photo of that one!

Sounds like it might be a noisy tappet. Does it get quieter when warm? When was the last oil change, and what oil is it? If it is a 0W-40, I think I'd be tempted to try an oil change to 5W-40, and see if it helps.
 
Yes it does get quieter when warm. Last service was 3000mls ago, Mobil1. Can you recommend a good oil Richard?
 
This:

http://www.nielsencdg.co.uk/acatalog/Mobil_Super_3000_X1_5W-40_5_litre.html

 
Plenty of good 5W-40's on the Approved Oils list in the Technical Articles section. The one which Nick suggests is approved, and my indy uses it too.
 
Does it sound like it's one tick per revolution? Can you hear it when sat in the car with the doors and windows shut? Great colour by the way. I have a 2002 C2 in that colour but standard body style.

 

ORIGINAL: redbaz

Hello Richard, just bought a 996 in zanzibar red, with full gt2 kit, wheels etc. Have just noticed a ticking sound coming from the o/s engine bank, ticking increases with revs, any ideas?
Car hasn't been used for a few weeks. It's a 2001 c2, with 38,000 on clock.
thanks in advance Richard.
Regards Barry
Click to expand...
On the CArrera I had, it sounded like someone tapping the rocker cover with the metallic end of a screwdriver and it was felt it was a tappet although the tap was lighter in tone than the usual tappet one. It ticked about twice per second and increased with revs but no louder or softer. It turned out to be a loose spark plug!
 
I had the same problem a few years back and my indie told me to drive it hard when warm and to get an oil change which could clear the problem as sometimes tappets get muck caught that can clear, and the advice was right as before the oil was change it cleared. However i got the oil changed anyway for good measure.

OPC recommendation was engine out and new tappets which thankfully I didn't go with, and all was well.
 
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