Skip the auto shop - Our mechanics make house calls

Q: Exhaust leak causing clicking sound.

asked by on

I hear a clicking noise in the passenger's side of the engine when I accelerate. It could possibly be an exhaust leak.

Yes, this could be the cause, you may have a leak at one of the exhaust manifold tubes. The exhaust manifolds needs to be inspected for a black soot buildup at the joining surface of the cylinder head and exhaust manifold. The exhaust manifold can be restored to possibly cure the leak or the exhaust manifold gasket will have to be replaced. A less likely scenario would be a cracked exhaust manifold tube, upon inspection you will still be looking for a crack with a black soot buildup around the crack. Depending on the exhaust manifold you have installed a cracked tube could possibly be welded. One last possibility may not be an exhaust leak at all but a faulty lifter. A faulty hydraulic roller lifter will not fully pump up and will allow for excessive valve lash causing a click or tap that raises and retreats in frequency and intensity with engine RPM. The use of an engine stethoscope can be used to possible narrow down the affected lifter. Without hearing the noise personally it is hard to say which of these scenarios match you specific issue. You may want to enlist the help of a mechanic, like one from YourMechanic, assist in the diagnosis and repair of this noise.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Exhaust leak causing clicking sound.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: There is no power going to fuel pump. Check relay it's good.

Hi there. Have you inspected/replaced the fuel pump fuse? The ECM controls the fuel pump relay and this relay will only energize when commanded on. Does the check engine light come on; if not, then the ECM is not turning...

Q: Water leak into the trunk from a rain storm

If your car is equipped with a sunroof, which I am guessing it is, the drains for the sunroof guides are a common cause of water intrusion into the vehicle. It is expected that water will get into the sunroof...

Q: I was able to pin point the bad ground cable in my 97 Mustang. There is no visual issues with cable.

Check the wiring with a digital volt and ohm meter with resistance and see how much resistance is on the ground wire that you have found that is bad. If the resistance is high, then there is a connection that...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.