Engine Rattle At Low Speed Pull Away

[nicob]

i have an IS 250 that clearly has an engine rattle at low speed pull away around 15 to 20 mph.

The rattle abates or muffles when engine is warm although can still be heard especially if slow pace up an incline.

The colder the engine the louder the noise.

Does anyone know what this is?

[mrahman136]

Hi, I had a loud rattling noise on cold startup that would go after a few mins of driving. It was approved used so it was investigateed and some large work was done on VVTI cam followers I think IIRC.

[Guest bigbullhead]

Put some oil in it!!!

Sorry I could not resist that although I noticed the better oils make the engine quieter so you could try that ie Castrol edge etc

[normski2]

I've read on here about a condition called something like 'piston slap. Not sure if this is what you are experiencing but have a good search on this forum there was quite a bit about it.

[nicob]

I've read on here about a condition called something like 'piston slap. Not sure if this is what you are experiencing but have a good search on this forum there was quite a bit about it.

Hi Thanks for taking the time to reply - looks interesting - might be the issue...

[nicob]

does anyone know the email address of the uk/european Lexus directors?

[nicob]

Hi, I had a loud rattling noise on cold startup that would go after a few mins of driving. It was approved used so it was investigateed and some large work was done on VVTI cam followers I think IIRC.

Hi Thsnks for reply - i dont think its cam as that tends to be until oil circulates in the hydraulic lifters and the noise is only under load. you can rev engine no issue. sometimes when really cold the rattle is present but mostly its only under load i.e. when pulling away...