Skip the auto shop - Our mechanics make house calls

Q: Loud engine noise

asked by on

Suspected exhaust leak. Had one, replaced catalytic converter. Now suspect cracked manifold or Manifold gasket. Is there a good way to check? My car sounds like a Pinto.

My car has 185000 miles.
My car has an automatic transmission.

Hi, thanks for writing in. I would recommend having a smoke test performed on your vehicle. A smoke test will be able to show you where any vacuum or exhaust leaks may exist. I would recommend having the smoke test performed by a qualified professional as it requires the use of a special machine to do. Once the smoke test has been performed he will see smoke being emitted from the source of the leak. Once the source of the leak has been found the faulty part can be replaced. Here at YourMechanic, we can have a technician come to your home or office to inspect and diagnose this issue for you, and make or suggest the necessary repairs.

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!

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: Exhaust smell in cabin while idling

Since you just had major engine repairs done and the exhaust system was disconnected and the manifolds were removed then you may have an exhaust leaking into the interior. You should have the a/c on recirculate air and not outside...

Q: Hello replaced bent exhaust valve on 03 bmw 745li reassembled everything now car cranks but wont start only pending code po365

Hi there. Essentially, the P0365 code means that there has been a lack of voltage detected from the camshaft position sensor B in bank 1 by the PCM within a few seconds of the engine starting. The camshaft position sensor...

Q: When I step on the gas pedal the car doesn't move right away and there's a loud noise coming from the hood. What's wrong with the car?

Hi there. There could be lots of things that would make noises as the vehicle is trying to move. The most common could be the transmission making a noise. If the transmission is making the noise, then it could be...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...