How Long Does a Cold Start Injector Last?

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The cold start injector is also known as the cold start valve, and is an important part of keeping your engine running smoothly. The cold start injector is a fuel injector that is electronically controlled and is added to the cold air intake, which is located on the intake manifold. If engine temperature reaches below a certain point, the computer lets the injector know to add more fuel into the air mixture. This helps to enrich the mixture in the cylinders, and allows the vehicle to have an easier start.

Over time, the cold start injector can become worn and not working properly due to being used every time the vehicle starts up. When this happens, the engine will have trouble idling and will sound rough. Furthermore, the engine may stall every time the vehicle is started until it warms up.

One thing that can create problems with the cold start injector is the thermometer start interval. If this interval has been set for too long, the car will crank for a long period of time before starting. The thermometer start interval will need to be reduced when this happens. The cold start injector can become clogged by debris. When this happens, the vehicle will not start at all until the clog has been cleared. If the cold start injector’s pressure is too high, your engine will receive a lean air-to-fuel mixture. This will cause the engine to start and then stop. The opposite can happen as well. If the cold start injector’s pressure is too low, a rich air to fuel mixture will happen and cause the engine to smoke, then stop, when you try to start the car. This is a serious issue and cannot be left unattended, that’s why a mechanic should be contacted immediately to diagnose and/or replace the problematic part.

Since the cold start injector can go bad over time, you should be aware of the symptoms that it gives off before it needs to be replaced.

Signs the cold start injector needs to be replaced include:

  • The engine will not run when you take your foot off the gas pedal
  • The engine will not start or it stalls while you are trying to start it
  • The engine floods when you try to start it
  • The vehicle will not start at all

If you are experiencing any of the above symptoms, you should have a certified mechanic visit you to have your problem fixed.


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Carlos

27 years of experience
319 reviews
Carlos
27 years of experience
Kia Optima - Brake Pads Replacement (Rear) - Riverside, California
Second time Carlos has come to my place and hooked it up. First to diagnose and replace a starter then break pads, both done fast and perfect. Easy work for Carlos.
Toyota RAV4 - Brake Pads Replacement (Front) - Garden Grove, California
Carlos was awesome! Not only is he an expert, he's fair, honest, and goes above and beyond. I would hire him again, no question. Thanks, Carlos!

Gustavo

16 years of experience
139 reviews
Gustavo
16 years of experience
Ford F-150 - Brake Pads Replacement (Front, Rear) - New Braunfels, Texas
Very friendly and explains things if you are interested. I will continue to work with Gustavo any time I need auto work done - this is my second time out for a different car and will book him for my third car. Already have recommended Gus to my friends.
Nissan Altima - Brake Pads Replacement (Front, Rear) - San Antonio, Texas
An amazing mechanic very hard working and fast. Very helpful with suggestions and comments on better maintenance of my car.

Robert

21 years of experience
62 reviews
Robert
21 years of experience
Dodge Challenger - Brake Pads Replacement (Front) - Fort Worth, Texas
On time, professional, very knowledgeable on vehicles and maintenance issues. Robert took the time to show the condition of parts and explain what did or did not need to be replaced or repaired. He is the best kind of mechanic and not someone who would scam a customer into more costly repairs. I had requested a brake pad replacement and Robert showed me that 3 of the 4 pads were in good condition and would not need replacing and even checked the rear pads for condition. I would highly recommend Robert because he is very ethical in his treatment of customers and because he is also a Veteran! GW

Roberto

8 years of experience
29 reviews
Roberto
8 years of experience
Land Rover Discovery Sport - Brake Pads Replacement (Front, Rear) - Scottsdale, Arizona
Roberto was very professional and courteous and did a great job on my brake replacement. I would recommend him for all services!

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