Skrrrim

My 07 is250 has a bit of an incessant tapping noise going on. Not sure if it's normal or if something is wrong. Lexus dealership took a look at it but concluded nothing was wrong. It's a fairly loud tapping noise. Here's a video of where it's coming from in the engine compartment http://youtu.be/JYMYjSoKEl4

Here's one more video up close http://youtu.be/FyOnc7wyjKI

....not sure if I'm uploading it right so let me know if it doesn't show.......any thoughts or wild guesses?

evogt500

That does not sound normal. Bad fuel injector? Get a second opinion.

teefar

loose spark plug?

ibidu1

iTrader: (1)

possibly the cam gear issue

panda08

iTrader: (1)

sounds like its normal. the fuel injectors are just opening and closing and the sound bounces off the plastic plenum. IS350's are much louder.

aznoutkast

i dont recall my is350 that loud. "knock on wood"

nosurprise

iTrader: (1)

Can you record one with the hood closed?

I'm pretty sure my IS350 doesn't make that noise (esp. that loud I assume it will be heard even with the hood closed).

itzhieu

iTrader: (2)

isnt that just how our fuel injectors are? i mean i hear it from mine too but it never got that loud.. maybe i should try opening the hood. LOL

juvi22003

iTrader: (2)

I get that same sound from mine so annoying !!! Hopefully i wont be hearing it anymore with my next IS

SC400slide

iTrader: (11)

sounds normal.

Skrrrim

With the hood closed it's much more muffled......but I have read about this being a common sound from the injectors. It just seems so out of place when it's idling. Could be a perfectly quiet engine otherwise.

Is there any way to reduce or completely eliminate the sound? My last car had a ping that sounded similar....so noises like this make me irritated.

kickin8

iTrader: (1)

tick tick tick tick tick....that's normal.....

panda08

iTrader: (1)

My 350 is super loud, maybe cause I use fuel injector cleaner too?

Gville350

iTrader: (10)

Don't waste your money.

Denver

iTrader: (13)

thats your injectors opening and closing