Auto >> AutoSPT >  >> Engine

1989 dodge colt e when the car sits over night seem like it is starving for fue after turning engine several times will start up and to run steady This only happens du?

The problem you're describing with your 1989 Dodge Colt E—where it hesitates to start after sitting overnight, requiring multiple attempts before running smoothly—strongly suggests a fuel delivery issue that's exacerbated by the time the car sits. Here are the most likely culprits:

* Fuel Pump: The most common suspect. After sitting, the fuel pump may lose prime (the initial pressure needed to deliver fuel). A weak or failing fuel pump struggles to build pressure, leading to a hard start. The repeated cranking eventually helps build pressure, allowing it to start.

* Fuel Pressure Regulator: This component regulates the fuel pressure in the system. A faulty regulator might leak pressure overnight, causing the same starting problem.

* Check Valve in the Fuel Line: This valve prevents fuel from draining back to the tank when the engine is off. If it's failing, fuel drains back, requiring the pump to work harder to re-prime the system.

* Fuel Filter: A clogged fuel filter restricts fuel flow, and this restriction becomes more pronounced when the engine is cold and the pump needs to work harder.

* EGR Valve: (Less likely, but possible) A sticking EGR (Exhaust Gas Recirculation) valve can cause a rich or lean fuel mixture, leading to difficult starting, especially when cold.

Troubleshooting Steps:

1. Listen for the fuel pump: When you turn the key to the "on" position (but not cranking), you should hear a brief whirring sound from the fuel pump. If you don't hear it, the pump is likely the problem.

2. Check the fuel filter: It's relatively inexpensive and easy to replace. A visual inspection might show if it's visibly clogged, but a replacement is often the best preventative measure.

3. Check fuel pressure: This requires a fuel pressure gauge and some mechanical knowledge. You'll need to check the pressure with the engine off and then while cranking. This is the most definitive way to diagnose fuel pump or regulator issues.

Important Note: Before attempting any repairs, especially those involving fuel system components, be aware of the potential fire hazards associated with working with gasoline. Disconnect the negative battery terminal before working on any fuel system components. If you are not comfortable performing these repairs yourself, take your car to a qualified mechanic for diagnosis and repair.