Skip the auto shop - Our mechanics make house calls

Q: Car made a loud noise and now won't run

asked by on

I went to turn my car on and as I was turning the key I heard a very loud pop coming from under the hood and I tried to start it again right after and it turns over and starts but dies right away. I looked under the hood and as I opened the hood white smoke poured out everywhere. Every time I try to start it the smoke comes out again from the same area. It's coming from the front driver's side corner of the car. I looked under the car and there wasn't any fluids on the ground or anything.

My car has 200 miles.
My car has an automatic transmission.

This sounds like potentially some backfiring and possibly a blown head gasket if you are seeing white smoke. Some things to consider are: did the car overheat at all last time it ran? Have you noticed any water leaking from anywhere under the hood. Are there any Check Engine Lights on? As for the popping sound, this could be a variety of things but is most likely the result of a misfire creating the backfiring. I would suggest having an expert from YourMechanic come to your home to diagnose the backfiring symptoms firsthand for an accurate repair.

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: My 2007 Ford F-150 V6 runs rough and stalls

Hi there - I would check for low fuel pressure. Low fuel pressure could be due to a clogged fuel filter, weak fuel pump, or fuel pump relay with burned contacts (fuel pump won't get adequate power). Dirty or failed...

Q: Pass key fault is on

The keys on these vehicles have a computer chip inside them that is programmed to the vehicle. It is possible that the vehicle may have been attempted to start with a key that is not programmed to the car, therefore...

Q: I wanna buy this bmw 325i but the airbag and seat belt lights are on on the dash. Do you think i should get?? Its accident free

Hi there. You might find it very helpful and cost effective to have one of our mobile mechanics complete a pre car purchase inspection; so they can inspect the vehicle and determine the condition of the vehicle and whether it's...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.