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hard start

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How to Troubleshoot a Car That is Hard to Start
"Car not starting" is a common complaint among car owners and is caused by faulty car batteries, spark plugs, car starter, or fuel pump.

Related questions

Question
Car stutters on initial startup when cold 2001 Toyota Camry
Hello - a "hard start when cold, or left overnight" is usually a fuel mixture problem during cold start. The coolant and air temperature sensors cause problems when they do not accurately measure coolant and air temperatures, report bad temperature...
Question
Hard to start
Check cylinder compression and also check for exhaust restrictions (use a gauge to measure back pressure). If no problem is found, cleaning the injectors is not a bad idea but such has to be done off the vehicle (by commercial...
Question
2010 Mazda 3 start issues
There are many causes of hard starting but illustrative ones are a faulty engine coolant temperature switch (sensor), malfunctioning idle air control (IAC) valve, vacuum and EGR leaks, inadequate fuel delivery or pressure (clogged fuel filter, injectors), and contaminated or...
Question
Sometimes it doesn't want to start , shakes bad , low idle , maintenance required light
Of course, be sure any required maintenance has been performed. YourMechanic can assist with maintenance. For example, if the spark plugs have not been replaced as required that alone can cause the hard starting that you are reporting. Other causes...
Question
Car won't start on first attempt, takes several tries the vehicle will turn over 2003 Toyota Sequoia
Hello - most likely, your hard starting is caused by a malfunctioning fuel pressure check valve, or fuel pressure regulator. The fuel system is supposed to hold a small amount of residual pressure in the system for faster starts. A...
Question
Jeep is having a hard time starting. 2004 Jeep Grand Cherokee
Hi there - your symptoms suggest a fuel supply issue, quite likely a fuel pressure check valve or fuel pressure regulator issue. Either of these can allow fuel pressure in the injection system to leak down while the vehicle sits....
Question
Truck stalls, starts back up after 2 min, stalls again starts back up after 2 min, now good for 1 month and it happens again.
Hello, thank you for writing in. Unfortunately you already know that the hardest part is going to be catching the problem when it occurs. With intermittent issues, you must wait to diagnose until it happens again, find damages or flaws...
Question
I am having trouble getting this vehicle to start and have been eliminating problems.
Hello, thank you for writing in. With the new spark plugs in place, we need to make sure that the distributor and ignition cable is sending those two spark plugs a strong signal. If there is no or low power...
Question
Turns over but won't start.. 2001 Chevrolet Blazer
Hello - your symptoms and diagnostic efforts still make me suspect that there isn't adequate fuel pressure when you first try to crank it. The fact that it sometimes starts on the second effort reinforces this. If the fuel check...
Question
06 Silverado 4.3 won't start after a battery reacement, I have good spark to
Hi there. It really depends on whether or not you've had starting issues before you replaced your battery as to where to begin your diagnosis. However, due to the fact that you have a newer vehicle, it is likely that...
Question
Click noise when I try to start my jeep
Hello, thank you for writing in. The vehicle is likely having issues with the battery cables or the ground connection. With that being said, the battery terminals and the cables both need to be clean, dry, and tight. Double check...
Question
1997 Honda CR-V cranks but won't fire. Changed fuel pump it ran for a few days. Then would crank and not start. The next day it st
Hello, thank you for writing in. If the issue seems to be fuel related, you are going to want to run some more tests, but they must be done when the vehicle is acting up. When the vehicle will not...
Question
Hard start hot and cold. Fuel pump, or throttle body?
If the throttle body was causing a hard start, then the engine would run with a loss of power all the time. The hard start could be caused by either the fuel pump not holding the fuel in the lines...
Question
My vehicle is hard to start.
You can try checking fuel pressure. The fuel pump has a check valve that will not allow pressure to bleed back into the assembly as it pumps. If a fuel pressure gauge is hooked up, the fuel pump will activate...
Question
My 04 kia sedona stalls out when i stop or brake, it cranks but wont turn over. I replaced the main relay fuse but still no go
Hello, thank you for writing in. The possible issues with the vehicle are rather extensive without some more information. The first step is to have the vehicle scanned for diagnostic codes, so we know what the vehicle's computer has detected...
Question
SUV stopped running won't start does turn over . Battery light flashes when attempting to start. Acts like starving for gas .
Hello, thank you for writing in. Because the vehicle is new to you, it is difficult to point yourself in a good direction, and we will have to start with the basics. Due to the fact the battery light is...
Question
if my car takes 4-5 sec to start is it the fuel pump?
Hello, thank you for writing in. A weak fuel pump is a great place to start. If the pump was failing, you may also experience issues while driving. If the fuel system is not keeping fuel available to the engine...
Question
RPM needle moves up and down and then car shuts off when starting it. This happens intermittent. Runs good some days, others no.
Hello, thank you for writing in. With all of the various codes and systems being effected, you may be experiencing a vacuum leak. While everything the dealership did was understandable to some extent, a vacuum leak test needs to be...
Question
Crank no start condition 2000 Chevrolet K1500
Hello, your "Cylinder 3" symptoms suggest either a leaking injector as you noted, or possibly crossed plug wires. If Cyl 3 firing makes it harder for your engine to start, that suggests that it might be firing out of order....
Question
My car has prolonged crank time and poor acceleration
Low fuel pressure could explain your problem. The fuel pump and pressure regulator are designed to maintain very specific pressure at the fuel rail so that the ECU can control fuel mixture by varying the amount of time the injector...

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