Symptoms of a Bad or Failing Cold Start Injector

Schedule Car is hard to start Inspection
Service Area

$79.99 - $89.99

Price range for all vehicles
Average rating from 140 customers who received a Car is hard to start Inspection.

The cold start injector, also referred to as the cold start valve, is an engine management component found on many road going vehicles. It’s purpose is to supply the engine with additional fuel to enrich the fuel mixture in cold temperatures where air density is increased and additional fuel is required. It plays a key role in the performance, fuel economy, and starting characteristics of the vehicle, so when it does have issues the problems can detract from the overall drivability of the vehicle. Usually a problematic cold start injector will display a few symptoms that can alert the driver that a potential problem has occurred and needs to be serviced.

1. Hard Starting

One of the first symptoms typically associated with a bad cold start injector is a problem starting the vehicle. The cold start injector is there to enrich the fuel mixture of the vehicle during low temperature conditions, such as during cold starts or in cold weather. If the cold start injector fails or has any problems, it may not be able to supply the additional fuel required in cold conditions, and as result may cause the vehicle to experience difficulty starting.

2. Decrease in MPG

A decrease in fuel efficiency is another symptom of a bad or failing or failing cold start injector. If the cold start injector leaks at the nozzle, and allows fuel into the intake this will cause an excessively rich mixture. This leak will result in a decrease in fuel efficiency, and in some cases performance and acceleration.

2. Engine performance issues

Engine performance issues are another symptom commonly associated with a bad or failing cold start injector. If a cold start injector fails or develops a large enough leak it can lead to engine performance issues. A leaky cold start injector may result in a reduction in engine performance and acceleration as a result of the disturbed air fuel ratio. In more severe cases, where a large amount of fuel is leaking into the manifold the vehicle may even experience stalling or misfires.

If your vehicle begins to display any of the symptoms above, or you suspect that your cold start injector has failed, have the vehicle diagnosed by a professional technician, such as one from YourMechanic, to determine if your car needs a cold start injector replacement.


Next Step

Schedule Car is hard to start Inspection

The most popular service booked by readers of this article is Car is hard to start Inspection. Yourmechanic’s technicians bring the dealership to you by performing this job at your home or office 7 days a week between 7AM-9PM. We currently cover over 10k cities and have 100k+ 5-star reviews... LEARN MORE

SEE PRICING & SCHEDULING

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

Recent Car is hard to start Inspection reviews

Excellent Rating


YourMechanic Car is hard to start Inspection Service

Average Rating

4.8/5

Number of Reviews

140

Rating Summary
131
3
1
2
3
131
3
1
2
3

Peter

23 years of experience
227 reviews
Peter
23 years of experience
Jeep CJ5 - Car is hard to start - Los Angeles, California
Peter is amazing. I just requested another appt and I want Peter to come Wednesday. I can’t imagine ever doing this any other way. You guys have amazing people working for you.
Audi A4 - Car is hard to start - Simi Valley, California
Peter was very friendly and knowledgable when he first arrived and gave me very informative details about my car that I didn't know existed. After diagnosing the car he was able to find the issues with the car and describe each issue with the car throughly. After today Peter gave me confidence in knowing there wasn't a major problem with my car like some mechanic shops and dealerships have said. I'd love to have him back with my car once iv had some time to figure the parts I will need to service the car.

Ben

39 years of experience
1113 reviews
Ben
39 years of experience
Infiniti JX35 - Car is hard to start - Houston, Texas
Ben is so great. He has been working on all our cars for over a year and we could not be happier. Today he came out on a Sunday to make sure that my car was running well for the beginning of the week, even though the earliest booking time was on Monday. He texted and asked if I would like him to come out on Sunday instead. When he was hear he quickly diagnosed the problem. Showed me what he found and how we could get me fixed up right away. He is always fair and looks for ways to save us time and money. Super honest, knowledgeably and always has a great attitude. We will continue to have Ben work on our cars from the regular oil change to the more complicated fixes. Thanks Ben!!

Eduardo

20 years of experience
60 reviews
Eduardo
20 years of experience
Ford F-250 - Car is hard to start - Richmond, Virginia
Came to do an inspection on an issue with the starting of the truck. Listen to everything I had to say and what has already been done to the truck. Was thoughtful courteous got right up there and check things out any issue is solved. Definitely use Eduardo again

Chris

20 years of experience
1612 reviews
Chris
20 years of experience
Toyota Corolla - Car is hard to start Inspection - Anaheim, California
Chris was very thorough and completed everything quickly. He let me know everything that was wrong with my car and assisted in getting it running again in no time.

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