Q: The car starts fine the first time, but then has difficult startup

asked by on

My car has difficult startup. The first time I turn it on, it starts normally. After that, it has difficulty turning over. Then, I have to give gas. The car is running rich for over a year. I had the fuel regulator sensor replaced. Also, I had the fuel system pressure tested. It is all okay but the problem is still there. What can cause this and how can I fix it?

The O2 Sensors or the Mass Airflow Sensor may be bad. The list can go on. The engine computer will need to be tested and all codes diagnosed. Since you drove the vehicle for a year with it running this way, it could cause other problems like carbon build up in the engine and possible catalyst damage. If the engine is running rich, then there is a reason for this and only a thorough diagnosis of the engine control systems by a qualified mechanic, like one from YourMechanic can isolate the cause. I recommend you contact a technician, to inspect why your car is hard to start before making the necessary repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. The car starts fine the first time, but then has difficult startup

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: How can my power steering leak all of a sudden when it wasn't driving for 30 days?

Hey there. This suggests your power steering pump may be failing or you have a leak elsewhere in one of the power steering lines. The power steering system operates on very high pressurized hydraulic pressure (in some cases as much...

Q: Fuel Pump Pressure intermittent 2001 Chevy Silverado 1500

Hi there - you have a failed or leaking fuel system check valve. This valve is designed to maintain low, positive pressure in the fuel system. This allows faster starts first thing in the morning, requiring the fuel pump to...

Q: How long can I drive on the spare donut tire originally provided with car?

A general rule of thumb is to not drive on this spare doughnut tire for longer than ~+/-70 miles or driving faster than 50 mph. These tires are not designed with much tread on them and will wear out very...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.