Car turns over but refuses to start.

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How to Troubleshoot a Car That is Hard to Start

YourMechanic https://www.yourmechanic.com > article > how-to-tro...
Dec 7, 2016 - "Car not starting" is a common complaint among car owners and is caused by faulty car batteries, spark plugs, car starter, or fuel pump.
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Haha, another option!

Have you checked the fuel lines for dents or kinks? When it is not starting check fuel pressure. If OK then check ignition spark. If both ok then check fuel flow at injectors.

If all OK try pouring a spoonful of oil in each cylinder, install the spark plugs and try to start. If it starts OK and after a while it runs rough again, do a compression test on each cylinder.

Go back to the basics. You need air, fuel and spark to run. Use starting fluid to make sure you have the fuel part. Was you plug wet when you pulled it? Fouled plug in winter in not uncommon. Make sure that plug fires when turning over. That will rule out everything electrical but timing. A shot of starting fluid would make it hit if it is not getting fuel. Also it will not start if the compression is low. I would check this while the plug is out. Good luck!

check engine compression

does the motor crank. if it cranks the starter and altnator are good. now when you turn the key to the start position do you hear the fuel pump? do you know if you have spark at the spark plugs

There are three things ANY vehicle needs to start! Fuel, Spark, Air!
I would start with spark! it would be easier to check spark if you buy an extra spark plug! Pull the spark plug wires off one at a time and plug the extra spark plug into it. Set the wire and plug down away from moving parts! have someone crank the engine over once or twice. if the plug sparks, plug it back in and move to the next one! If it still has problems with a newer battery, I would rule out alternator! Follow the fuel line in the engine and look for a little screw on plastic cap on the fuel line! This is a pressure valve. After turning over the engine a few times, take a pen or small screwdriver and press this valve in. Fuel should spray out pretty good! If it has low pressure, fuel pump may be bad!

test for fuel from fuel pump check for spark from plugs check all fuses if not getting spark replace coil pack if not getting fuel replace fuel pump

Engine wont start.If car battery voltage is low then engine wont start.The fully charged battery will show 12 volt.But if battery is showing 12 volt.Then check the battery to starter connection.If that is also checked ok then check voltage for starter itself.The starter is also a 12 volt part.But if the starter is faulty then it has to be replaced.If you start the car but if its not starting then its starter fault.But if the car makes cranking noise but its not getting turn over then there are many other possibilities.A car that cranks over but doesn't start, in many cases will be due to a bad fuel pump, a broken timing belt, an inoperative cam sensor or crank sensor. Also these problems are related to faulty spark plug. Check the spark at spark plugs when you start the car. Do you notice any spark. Actually you should see. If in case there is no spark then it's a spark plug problem. Also the coil pack gives power to spark plug. So check the voltage at coil pack. It will show 12 volt. If there is no voltage noticed at coil pack then its faulty coil pack that has to be replaced. If all the possible options checked out ok then check the car starter. The starter gets power from battery to start the car. If the starter is faulty then it will not let the car to start. Also check and confirm that there is fuel in the car. If its very low fuel then in some cases this causes the problem. Also check and confirm that fuel pump is functioning properly and the fuel filter is not clogged. One of the easiest ways to check for a fuel pump related problem is to spray a little starting fluid into the air intake while trying to start the car. If the car starts momentarily, then there's a good chance the fuel pump is not working or the car is out of gas. You can also listen for the fuel pump's humming sound when the key is first turned on. Also if a inoperative fuel pump is suspected, a good technician will always check to verify there is power and ground being supplied to the pump, to eliminate the possibility of a bad relay or electrical issue. Fuel pressure can be checked with a pressure gauge and if there is pressure, pulse can be checked at the fuel injectors in several ways including the most common, with the use of noid lights. If the injectors don't have pulse the engine won't start. ---------- This troubleshooting tips will help you to solve the problem. Thanks. Helpmech.

This will be due to a bad fuel pump, a broken timing belt, an inoperative cam sensor or crank sensor. Also this problems are related to faulty spark plug. Check the spark at spark plugs when you start the car. Do you notice any spark. Actually you should see. If in case there is no spark then it's a spark plug problem. Also the coil pack gives power to spark plug. So check the voltage at coil pack. It will show 12 volt.If there is no voltage noticed at coil pack then its faulty coil pack that has to be replaced.Also check and confirm that there is fuel in the car. If its very low fuel then in some cases this causes the problem. Also check and confirm that fuel pump is functioning properly and the fuel filter is not clogged. One of the easiest ways to check for a fuel pump related problem is to spray a little starting fluid into the air intake while trying to start the car. If the car starts momentarily, then there's a good chance the fuel pump is not working or the car is out of gas. You can also listen for the fuel pump's humming sound when the key is first turned on. Also if a inoperative fuel pump is suspected, a good technician will always check to verify there is power and ground being supplied to the pump, to eliminate the possibility of a bad relay or electrical issue. Fuel pressure can be checked with a pressure gauge and if there is pressure, pulse can be checked at the fuel injectors in several ways including the most common, with the use of noid lights. If the injectors don't have pulse the engine won't start. ---------- This troubleshooting tips will help you to solve the problem.Thanks.Helpmech.

Unhook the fuel line and turn the key. The spill under the motor will let you know if fuel is flowing. The alternative is to check the timing belt, if it is broke it will never try to start. The timing belt is behing all the belts on the front of mine that is a 4 x 4. The timing marks are above the cam pulleys and on top of the crank. It is a pain to do in the yard but it can be done, I did it.