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

How Long Does a Throttle Return Spring Last?
Not all vehicles on the road feature an electronic throttle control (ETC), which is also called drive-by-wire. For vehicles that don't offer this system, they have a throttle cable instead that...
How to Find the Keyless Code on a Ford Explorer or Mercury Mountaineer
Many Ford Explorers and Mercury Mountaineers were manufactured with an option known as the Ford keyless entry keypad. Some models refer to it as SecuriCode as well. It...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...


Related questions

Q: Wrong fuel into the engine, car cannot start

A few different things can happen when the wrong fuel is used in a vehicle. This vehicle should not be driven or attempted to start until repairs have been made. The gas will have to be removed from the gas...

Q: Hard start and Code P0672 - Low circuit on cylinder 8 glow plug

Hello. Code P0672 is the code for a low circuit on glow plug #2. If you are also having an issue with the cylinder 8 glow plug, then both of these issues, together, could be a potential cause for hard...

Q: Diesel in gasoline tank

Gasoline engines cannot run on diesel because it is very hard to get it to burn from the ignition; you need very high heat and pressure to get diesel to combust. For example, if you were to throw a match...