Engine Ticking at idle...normal?
#16
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
it is the sound of high tech (high pressure direct injection) that makes 2GR-FSE engine good as it is. Every single one has it, because otherwise it would be broken :-).
#19
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
To go into more detail. There are 12 injectors. 6 Port and 6 Direct. (Different sizes and flows)
The 2GR-FSE plant which is in (2nd gen IS350's and 350c's, 3rd gen GS350's, 450h's, 4th gen GS350, *4th gen GS450h and RX450h's use the same plant except the Atkinson cycle and Cooled EGR)
Works like this. (99% sure this is correct)
At low RPM (speed) the port injectors and Direct Injectors work simultaneously, hence why it sounds like mini muffled claymore mines going off under the hood. At high RPM (speed) the computer switches over to 100% direct injection (pretty sure synchronous with the VVTi compensating A/F ratio).
Noisy as it is... its still rated as one of the best engines made by Wards.
The 2GR-FSE plant which is in (2nd gen IS350's and 350c's, 3rd gen GS350's, 450h's, 4th gen GS350, *4th gen GS450h and RX450h's use the same plant except the Atkinson cycle and Cooled EGR)
Works like this. (99% sure this is correct)
At low RPM (speed) the port injectors and Direct Injectors work simultaneously, hence why it sounds like mini muffled claymore mines going off under the hood. At high RPM (speed) the computer switches over to 100% direct injection (pretty sure synchronous with the VVTi compensating A/F ratio).
Noisy as it is... its still rated as one of the best engines made by Wards.
carbon build up issues.
#21
Intermediate
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Frankly speaking why does it matter if there is ticking noise coming from our engine it is suppose to have it by design, heck even my dad LS 600hl engine has noise.
Yes if it is making noise like a diesel engine then you should be worried. other then that enjoy your GS it is an amazing car.
Yes if it is making noise like a diesel engine then you should be worried. other then that enjoy your GS it is an amazing car.
#22
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Frankly speaking why does it matter if there is ticking noise coming from our engine it is suppose to have it by design, heck even my dad LS 600hl engine has noise.
Yes if it is making noise like a diesel engine then you should be worried. other then that enjoy your GS it is an amazing car.
Yes if it is making noise like a diesel engine then you should be worried. other then that enjoy your GS it is an amazing car.
#23
#24
Intermediate
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Probably you are right but it is no where as quiet as 1st gen LS V8 engines. the other day i went to the lexus dealer for service and customer had the 1st gen LS and it came up right next to me and it was just amazing how quiet those engines are.
#25
Lead Lap
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
I never drive with my windows down. The car may be making that sound, but I have never heard it. The sound insulation on this car is amazing.
#26
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
+1 The V8s are quiet as a church mouse.
Thread
Thread Starter
Forum
Replies
Last Post