996 3.6 engine noise

[ahamay]

hey guys need some opinions

i've been out of town for 1 month,get back yesterday directlly in the garage to my baby,start the engine and notice kind of powerfull regulated sound down in the back,it look to me like an valve clearance issue.

the noise went off onlly approximately 10-15 minutes of driving.

please advice

[RFM]

Probably one of the valve lifters is leaking (internal) some oil, not uncommon after a month of standstill. It become more critical when the interval became shorter, every two days or every day when start up cold. However an oil and filter change doe's any harm.

[KevinMac]

Probably one of the valve lifters is leaking (internal) some oil, not uncommon after a month of standstill. It become more critical when the interval became shorter, every two days or every day when start up cold. However an oil and filter change doe's any harm.

I'm at the understanding starting th engine cold and if the tap noise is there for a couple of seconds it's normal, as long as it goes away!

[ahamay]

Probably one of the valve lifters is leaking (internal) some oil, not uncommon after a month of standstill. It become more critical when the interval became shorter, every two days or every day when start up cold. However an oil and filter change doe's any harm.

I'm at the understanding starting th engine cold and if the tap noise is there for a couple of seconds it's normal, as long as it goes away!

thank's guys

what upset me is the period of time

it was for 10-15 minutes also idling and also driving and again idling

@RFM

the oil was changed 3000miles ago and i will change it asap,but it is the competition from Motul

i guess i will have to watch it and if it become more usuall,as you adviced,a check operation of the cylinder head must be performed to see about the valve lifters and eventually change

there is a DIY or the valve clearence check procedure somwhere about it?i have searched for it but..

thank's again guys for share

[RFM]

As long as the oil brand and viscosity is on the "Porsche approved" list, you can do nothing wrong. Since the valve lifters are hydraulic there is no reliable clearance check procedure available as DIY, as far as i know.

[ahamay]

As long as the oil brand and viscosity is on the "Porsche approved" list, you can do nothing wrong. Since the valve lifters are hydraulic there is no reliable clearance check procedure available as DIY, as far as i know.

thank you

i like the 15w50 motul..

what can you tell me about flashing the ECU?it worth to buy an "universal" soft from one of those many ecu-flashing sellers,or i should use a piggyback unichip module after some dyno testing to adjust te fuel and timming?

or there is other ways?or doesen't worth?what's your opinion,i'm very curious

thank's again