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Ticking turbo, wastegate or valve?


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I get this ticking sound from the area of the turbo especially after the car warms up or has been under a load (hill, etc). What the hell is it? This is my first turbo, so I don't know how they're supposed to sound. With a n/a car I would immediately say valve, but I logged with RR and it says all is fine. No misfires, no excess valve action, no weird timing. Anybody help?
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It can be a bad gasket. Feel around the turbo with the engine running without touching the parts and see if there is something blowing on your hand.

 

I assume that you mean ticking when the engine is running. If there is a ticking after you turn it off it's just temperature stress relief.

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Could be bad news for some:

 

 

26.Engine Noise

 

 

A: INSPECTION

 

 

NOTE*)

When disconnecting the fuel injector connector, the malfunction indicator light illuminates and DTC is stored in ECM memory.

Therefore, perform the Clear Memory Mode <Ref. to EN(H4DOTC)(diag)-56, OPERATION, Clear Memory Mode.> and Inspection

Mode <Ref. to EN(H4DOTC)(diag)-45, PROCEDURE, Inspection Mode.> after connecting the fuel injector connector.

Type of sound Condition Possible cause

Regular clicking sound

Sound increases as engine

speed increases.

• Valve mechanism is defective.

• Incorrect valve clearance

• Worn camshaft

• Broken valve spring

Heavy and dull clank

Oil pressure is low.

• Worn crankshaft main bearing

• Worn connecting rod bearing (large end)

Oil pressure is normal.

• Loosened flywheel mounting bolt

• Damaged engine mounting

High-pitched clank

Sound is noticeable when

accelerating with an overload

condition.

• Ignition timing advanced

• Accumulation of carbon inside combustion chamber

• Wrong spark plug

• Improper gasoline

Clank when engine speed is

between 1,000 and 2,000 rpm.

Sound is reduced when fuel

injector connector of noisy cylinder

is disconnected.

(NOTE*)

• Worn crankshaft main bearing

• Worn connecting rod bearing (large end)

Knocking sound when engine

is operating under idling speed

and engine is warm

Sound is reduced when fuel

injector connector of noisy cylinder

is disconnected.

(NOTE*)

• Worn cylinder liner and piston ring

• Broken or stuck piston ring

• Worn piston pin and hole at piston end of connecting rod

Sound is not reduced if each

fuel injector connector is disconnected

in turn. (NOTE*)

• Unusually worn valve lifter

• Worn cam sprocket

• Worn camshaft journal bore in cylinder head

Squeaky sound — Insufficient generator lubrication

Rubbing sound — Poor contact of generator brush and rotor

Gear scream when starting

engine

• Defective ignition starter switch

• Worn gear and starter pinion

Sound like polishing glass with

a dry cloth

• Loose V-belt

• Defective water pump shaft

Hissing sound —

• Insufficient compression

• Air leakage in air intake system, hose, connection or manifold

Timing belt noise —

• Loose timing belt

• Belt contacting with case/adjacent part

 

 

Valve noise — Incorrect valve clearance

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  • 3 weeks later...
Back from the stealer. First, the mech who looked at my car and I talked about things. He has an Evo w/ 640 whp-he says. Anyway, we talked about tuning and turbos, etc, because I like to get an idea of what a mech knows and doesn't know. This guy answered all the questions correctly. And the good news is: the ticking IS the valves. But it is also normal because of the turbo heat the clearances are looser= ticking. So, if your car doesn't throw a code (engine misfire probably) don't worry about it. I logged my car half a dozen times, just the 4 cylinders for misfires or knocks and got zippo. Now I'm ready to start tuning. Hope this helps.
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