jkaram7

My IS250AWD in 30 degree temps upon a cold start sounds like a diesel engine when accelerating and idling ( I know the normal sound of the injectors and this is not it). Are any of you in cold climates experiencing this? I talked to a service advisor and I was told this is normal and is due to lower specs of the engine in terms of idle speed.

ajmtbm

i heard that because of the direct injection it has that little tick tick tick when running. kind od disappointing but thankfully inside you hear nothing.

on startup if you have a 1-2 second real bad clatter then there is a tsib for this.

Bichon

The reason diesel engines make a loud ticking noise at idle is that they use high pressure direct injection. So does our engine.

kickin8

iTrader: (1)

yes, it ticks....and it's loud......

nothing much we can do......

jkaram7

I know our cars have direct injection and make a clicking sound in all weather conditions. But whens its cold the engine is audible inside the cabin and when accelerating it sounds like a diesel truck. It sounds like piston slap.

FiveOhNine

How long does the sound last (miles, minutes, etc)?

Mine is definitely noticeably louder on cold days before it warms up; I just take it easy for 5-10 miles/minutes (whichever comes first), and it sounds normal once warm.

jkaram7

The noise is there until the temp gauge in reaches the middle.