Knocking cam

**Blackdog** · Sunday 5th August 2012, 12:16

The V70R has started a cam knock when it gets hot.

Its a bit tappety when cold but grows to definate knock when hot.

Hydraulic lifter problem?

Anyone know of a cleaner or the like I can add that may help?

Thoughts welcomed

Its a 99 phase I, phase II R.

**Harvey** · Sunday 5th August 2012, 13:28

What sort of mileage is on it ?.

**Blackdog** · Sunday 5th August 2012, 13:35

116k

Oil changed 1000 ago

**nobananas** · Sunday 5th August 2012, 15:15

Did the tapping coincide with the oil change or has it been doing it prior to the change ?

**Blackdog** · Sunday 5th August 2012, 16:30

Always been tapetty on start up p.First couple of seconds. Knock has only come on in the last 100 miles.

**960kg** · Monday 6th August 2012, 10:19

It may be the common problem of the "O"rings distorted where the sumps join together to get oil pressure up the top of the engine. The ring distorts and lets air get sucked in thus lowering the oil pressure.