Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. How Long Do Glow Plugs & Timers Last?

How Long Do Glow Plugs & Timers Last?

Glow Plugs and Timer

The only way that a diesel engine will be able to fire off and run is by having a set of functional glow plugs. The glow plugs in a diesel engine perform a very specific job that is vital in the smooth running of the vehicle. When the car key is turned over, the glow plugs release an electrical spark that helps to start the combustion process. The timer that is on the diesel engine helps to ensure that the glow plugs fire at exactly the right time. Each time the key of the diesel engine is turned over, the glow plugs and timer will have to work.

Usually, the glow plugs on a diesel engine will last around 100,000 miles, but in some cases will wear out before then. The continuous use that these plugs get is a major factor in why they will usually burn out quickly. Due to the location of the glow plugs, it can be a bit difficult to check them. The timer on the diesel vehicle will usually not get a lot of attention until there are issues with it. It is your job to make sure that the issues with the glow plugs and timer are fixed in a hurry in order to reduce the amount of damage done to the diesel vehicle.

The internal components of an engine are put through the paces due to the heat that they are exposed. When the glow plugs and timer on a vehicle begin to wear out, you will usually have a fair amount of warning signs that you will notice. By taking notice of the warning signs that a vehicle gives, you will be able to get the glow plugs and timer fixed in a hurry. The following are some of the problems you may start to have when the glow plugs and timer on your vehicle are going bad:

  • The cylinders are having a problem with misfiring
  • An increase in the amount of smoke that is coming out of the tail pipe
  • The vehicle will start slowly or not start at all

Getting the issues with the glow plugs and time on a car will help to keep it reliable regardless of the conditions on the road. If you think you are having problems with your glow plugs and timer, have a certified mechanic replace your glow plugs and timer.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

The Traveler’s Guide to Driving in Malaysia
CraigBurrows / Shutterstock.com Malaysia is a popular destination for many tourists today. The country has amazing sights and attractions that you will want to explore....
Veteran and Military Driver Laws and Benefits in New Mexico
The state of New Mexico offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...


Related questions

Q: Diesel fuel accidentally added to car and car won't start

Hey there, thanks for writing in about your 2011 Infiniti G25. Diesel fuel can damage the injectors, lines, and filters of a gasoline fuel system. Since a gasoline engine can't correctly combust diesel fuel, engine damage can also result. The...

Q: Glow plug

Like the Check Engine Light, the glow plug light on late model diesels can come on to indicate a problem in the engine control system. Even when the light is out, there should be a trouble code stored in the...

Q: Can a glow plug that's not walking cause a diesel knocking

Hi. It depends if the knock goes away after the engine warms up. If it does, then yes, this is contributing to the knock. What is happening is that the fuel and chamber is not hot enough for combustion and...