Engine noise

[kiloken]

Hi

Got a little problem was wondering if anybody else had come across it. If you start the car from cold (overnight standing) rev the ngine there is no unusual noise.However if you drive off and  ask the car to pull hard (I have to, I live in a valley) there is a low note knocking noise, something like a big end noise but could be tappets or piston slap. It only lasts for about a mile after that it goes away and does not appear until next cold start.

Anybody got any thoughts........the car is a 2006 GS300 with 133,000 miles on the clock.

Cheers

Ken

[KayCee]

are you sure its not the variable timing gear it as to get the oil in for it to pressurise ,  my gs300 did it, but  soon as engine was warm it was super quiet

The knowlegable gurus will soon point you in right direction

 

[kiloken]

Hi Rob

My thoughts were straying towards VVT. the car had just been serviced before I bought it, however when I rang the garage to find out what oil hed been used so that I could top up with same, after some hesitation the guy said "I will ring you back" it took six hours and he quoted what oil it should take not what they had used ?. So long story short...I am going to do an oil and filter change then I at least know whats in the sump and hopefully it may help/cure the problem.

P.S Using OEM Toyota/Lexus oil 5w-30, unless anybody knows something better?

Cheers

Ken

[kiloken]

Hi Guys

A quick update, changed oil using OEM Toyota/Lexus oil , new filter ...................problem gone !

Me thinks somebody used the wrong oil ??.....Never trust a Merc garage !!

Cheers

Ken

 

[KayCee]

Ken

glad you got it sorted  the correct oil is important on these cars

Robert

 

 

[xadamx]

On 5/1/2016 at 10:59 AM, kiloken said:

Hi Guys

A quick update, changed oil using OEM Toyota/Lexus oil , new filter ...................problem gone !

Me thinks somebody used the wrong oil ??.....Never trust a Merc garage !!

Cheers

Ken

 

Hi i'm using Mobil1 5w30 esp oil and no problem,what kind of oil do you used??

[kiloken]

Hi Adomas

I used a OEM Toyota/Lexus oil from Germany its  made by Mannol their type 7709. Hope this is of use to you

Cheers

Ken