Injectors making a ticking noise?

[mortalpl]

Ive noticed there is a ticking noise coming from the sides near the back of the engine my car has only 900 mil on it. I took it to a dealer and he said its normal and means the injectors are starting to brake in. Do you guys have a noise like that coming from your engine? Ill try post a video as soon as i can.

[jjeckelxz5]

There is a tsb for the lifters ticking on l99 cars. Search camaro5 there is quite a bit of info there.

[Bubbles]

There is a tsb for the lifters ticking on l99 cars. Search camaro5 there is quite a bit of info there.

I believe he has the V6 DI motor. If that is the case then yes it is normal high pressure DI noise

[Toasty]

Yeppers, totally normal, it's more pronounced at startup

[greennv]

mine makes that noise all the time . typical from what i've read on the LS3

[Toasty]

mine makes that noise all the time . typical from what i've read on the LS3

There's a TSB on the L99, not sure on the LS3, but may want to check

[mortalpl]

I got the lfx engine v6

[TonyNo]

Fuel pressure is crazy high on the six. ~200 psi for the LLT, and, likely similar on the LFX.

[Bubbles]

Engine idling at normal operating temperature, the Fuel Rail Pressure Sensor parameter should be approximately 1.9–5.0 MPa (276–725 psi).

Note: The engine speed must be between 600–1000 RPM

you would loose a finger or two :P

[TonyNo]

LOL I was only off by half a grand.

[Blackhawk]

Yes, the ticking is normal. Nothing to worry about.

[mortalpl]

k great thx!

[DAVES5THGEN]

Service Information
2011 Chevrolet Camaro | Camaro (VIN F) Service Manual | Document ID: 2552056
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#07-06-04-025F: Information on Clicking/Ticking Sound/Noise Heard During Cold Start, Sound/Noise Decreases But Continues As Engine Warms - Normal Operation of High Pressure Fuel Pump and Injectors - (Dec 13, 2010)
Subject:
Information on Clicking/Ticking Sound/Noise Heard During Cold Start, Sound/Noise Decreases But Continues as Engine Warms – Normal Operation of High Pressure Fuel Pump and Injectors
Models:
2009-2011 Buick Enclave
2010-2011 Buick LaCrosse
2008-2011 Cadillac CTS, STS
2010-2011 Cadillac SRX
2009-2011 Chevrolet Traverse
2010-2011 Chevrolet Camaro, Equinox
2009-2011 GMC Acadia
2010-2011 GMC Terrain
2009-2010 Saturn OUTLOOK
Equipped with 3.0L or 3.6L VVT Direct Injection V6 Engine (VINs G, D, V, Y – RPOs LF1, LLT)
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This bulletin is being revised to add the 2011 model year. Please discard Corporate Bulletin Number 07-06-04-025E (Section 06 – Engine/Propulsion System).
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Do This
Inform the customer that this is normal operation of the high pressure fuel pump and injectors.
Don't Do This
DO NOT replace the high pressure fuel pump and or injectors.
The 3.0L and 3.6L SIDI engines (RPOs LF1 and LLT) use a direct injection fuel system that operates at very high fuel pressures. A direct injection fuel system produces a rapid clicking and ticking sound that can be heard from the engine compartment. The sound is more evident when outside around the vehicle or when the hood is open. The sound is more noticeable during idle and is more frequent during a cold start, but lessens once the engine is warm. The rapid ticking noise on cold start up is the fuel pump (located on the rear of the left cylinder head) building up high fuel pressure. When the engine warm-up is completed, the high pressure fuel pump will continue to tick at a lower rate of approximately one tick per second during idle. The clicking sound is the fuel injectors pulsing on and off under higher fuel pressures. These sounds are the results of a normal direct injection fuel system operating properly.
DO NOT attempt to repair or replace any parts for this kind of clicking or ticking concern. The clicking or ticking sound is not indicative of any concerns with the engine or the vehicle. You may wish to give the customer a copy of this bulletin.

[Scott78]

Has anyone considered using larger injectors? I am new to the DI world but I know it's a common mod for diesels.

[swety1]

your ticking noise is normal, about break in period there all ready broke in. no problem dude. later, swety1