Q: Smoking comes from exhaust under hood.

asked by on

I have a sbc and just changed the spark plugs and wires now she's smoking from the exhaust. She wasn't doing that at first and plus I redid the whole motor
My car has an automatic transmission.

If you used any sprays while working on the spark plugs the smoke may be from the product heating up and burning off of the exhaust manifolds. Exhaust manifold gaskets will also smoke for some time when newly installed on an engine. You should also check to too if you have any oil leaking from your valve cover gaskets. Consider hiring an experienced technician like one from YourMechanic who can come out for a closer look at the vehicle to offer a more personal diagnosis of your smoking exhaust components.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Smoking comes from exhaust under hood.

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: Wont turnover

Check the main engine fuse box and look for fuse number 27. Remove the fuse to see if it is blown and discoloration in the socket. The fuse holder cannot handle the load on it, causing it to overheat. You...

Q: Car is cranking but not firing up to start

It sounds like the starter is failing. Its drawing too many amps from the battery causing the battery cables to get hot and melt. I recommend having a qualified technician such as one from YourMechanic to perform a starter test...

Q: My truck has a fuel smell in the exhaust and a horrible idle

I would suggest checking the idle air control valve to be sure it has a proper connection and is not dirty. As you may know, this reads the air intake into the fuel injection system as it is mixed with...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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...