Skip the auto shop - Our mechanics make house calls

Q: is one or more glow plugs not working

asked by on

When I'm driving the car if I accelerate it feels like the car is misfiring but if I get up to speed slowly it's hardly noticeable but then accelerate and the same again feels like misfiring car starts without any problems

My car has 110000 miles.
My car has a manual transmission.

Diesel engines are equipped with glow plugs to assist with cold starting. Diesel fuel is a bit thicker in cold weather and can make the engine difficult to start. The glow plugs warm the diesel fuel as it enters the engine to thin it out and help the vehicle start easier. Glow plugs play no role in engine performance once the vehicle is started. Since diesel engines do not have an ignition system(spark plugs, ignition coils,etc), they rely on proper fuel supply for each cylinder to fire properly. A misfiring diesel engine may have restricted fuel injectors, restricted fuel filters, or a failing fuel pump. Have a certified technician look into the misfiring condition as soon as possible. Continued misfiring can damage the engine.

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

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: What happens if the battery in my electronic key gets low?

While your electronic key is definitely convenient, it is a battery-powered device. That means the battery will eventually run low and then die. You’ll need to replace it at that point, but how do you tell that the battery is...

Q: Corolla with a whine.... 2002 Toyota Corolla

Hi there - a whining noise could be caused by several faults - low power steering fluid, serpentine belt idler/tensioner pulley, alternator bearings, etc. You have at least narrowed it to an engine-specific noise - well done! I would recommend...

Q: Wheel misaligned

I appears that hitting the curb has knocked the front right wheel out of alignment. In most cases, having an alignment service performed can correct this issue, but in some cases physical damage can occur if the curb was hit...

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...
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...
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...