Skip the auto shop - Our mechanics make house calls

Q: Exhaust manifold bright red when car is on

asked by on

The exhaust manifold turns bright red when the car is turned on. Also, the engine is trembling and the Check Engine light is on.

Hi there. An exhaust manifold that reaches high temperatures is a sign of a blockage in your exhaust system. This blockage stops excess emissions to be burned off. The excess fuel and carbon will build up causing your manifold to heat up quicker than usual and hotter than usual. I would a certified technician, such as one from YourMechanic, diagnose your vehicle’s Check Engine Light to get some more insight on the issue. From there, they will be able to determine what repairs are needed and perform any fixes for your car.

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: When heat is on outside air, exhaust smell. Not when circulating air. Worse when standing behind other cars.

Hello, thank you for writing in. The vehicle is designed to pull in the air in from around the vehicle to use in heating the air. When on that setting, the engine is pulling in exhaust fumes. This means that...

Q: misfire on cylinder 4

You had everything serviced except the one thing that will fix the problem. The problem is your central sequential fuel injection system has a clogged or defective injector to the number 4 cylinder. Following the manufacture technical service bulletin 00-66-04-00-30...

Q: Replaced timing belt about 2 days later set a code P2649 rocker arm actuator control circuit high bank 1 where is this part? 2003 Honda Accord

Hello - the P2649 error indicates a failure of the actuator circuit for the variable rocker arm mechanism. This mechanism changes valve opening for the engine, improving power and fuel efficiency. It is operated by engine oil pressure and a...

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...
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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...