What does a cold start injector do?
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.
What causes a hard cold start?
Causes of cold starts The engine compression is higher as the lack of heat makes ignition more difficult. Low temperatures cause engine oil to become more viscous, making it more difficult to circulate the oil. Air becomes more dense the cooler it is.
Can injectors cause cold start issues?
It is recommended that your fuel injector be cleaned regularly by a professional. By regularly, we mean every 36 months or 45,000 miles. If this isn’t done, there is a higher chance for your injector to become dirty or clogged which will cause problems like your vehicle’s difficulty cold starting or running.
Why does my car have a hard time starting when it’s cold?
Car batteries produce less electrical current when it’s cold, due to the chemical reaction being slower than on a warm day. Cold batteries simply don’t produce the same amount of power as warm batteries, and this effect can lead to starting issues.
How to check the cold start injector resistance?
No clicking should be heard. If no clicking is heard in Step 2, a resistance check of the cold start injector should be performed. To do this, turn the ignition switch to the Off position. Disconnect the battery ground cable. Disconnect the wire harness from the cold start injector.
Where is the cold start injector in the intake manifold?
The Cold Start Injector is the responsible for supplying more fuel into the intake manifold for an easier start on cold temperatures. It is located in the middle of the upper intake manifold plenum.
How does the cold start injector and time switch work?
That why we decided to show you how to test both your Cold Start Injector and your Cold Start Time Switch (this switch tells the injector when to spray that extra fuel in order to make it easier to start your vehicle on colder weather) this way you could get rid of your every morning starting problems.