Q: After driving the car for 10-15 miles , if I stop the engine and try to start it will CRANK but wont start

asked by on August 12, 2016

After driving the car for 10-15 miles , if I stop the engine and try to start it will CRANK but wont start . it will start the engine if i try to start after 30 minutes .why the car is starting after 30 3ins after stopping the engine.

My car has 103000 miles.
My car has an automatic transmission.

Car is hard to start Inspection $94.99 - $114.99 Get a Quote

Next time this happens, push the gas pedal all the way to the floor. This puts the car into what is called clear flood mode. This means the Powertrain Control Module (PCM) will not supply injector pulse to the injectors, so they will not add fuel. This is a common issue on Nissans.

I believe you have a rich condition. A rich condition means more fuel is in the air/fuel mixture than the motor needs. Warm motors don’t start well with a rich condition. This is usually a result of a leaky fuel injector, or possibly a ruptured fuel pressure regulator, however these are just possibilities. A rich condition could also be due to something in the PCM’s programming.

In any case, try the clear flood test and see if the car starts. Keep in mind, this will require a longer cranking time and once it begins to fire, it may not run very smoothly. This is to be expected. Once it begins to run, let off the throttle and begin to feather the throttle - you want to give it just enough to keep it running. Eventually, the excess fuel in the intake will burn off and the engine will begin to run normally. The RPMs will gradually increase. Once you can get them up above 2000 RPM, (high idle), hold it there for a minute or so and this will help clear out the excess fuel.

If this doesn’t work, you probably have a module that is suffering from a hot soak condition. A hot soak occurs when a hot car is turned off, and all the cooling systems are turned off. All the heat that had been generated still needs to go somewhere, but it will have to escape via inductance, just like a hot pan on a stove, as opposed to coolant or air flow that is used to cool things all over your car.

If a hot soak condition is the case, the problem will need to be diagnosed while it is failing. This is a more detailed diagnosis that requires much more knowledge of automobile systems. In this case, I recommend an inspection of the hard-to-start condition

Good luck! I hope the clear flood technique works for you.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

2002 Buick LeSabre overheated and now won't start
Hi, Your engine most likely has major head gasket failure and possible oil pump failure also. Running for a long time with the oil light on could have caused major internal failure of the bearings if the light being on...
Voltage regulator smoking after replacement.
Hello, You should check the integrity of the ground wire. If the rubber coating is melted it must be replaced. You should be sure that the alternator they gave you doesn't have a voltage regulator built in or attached to...
Steering wheel shaking
A shaking steering wheel at low speeds can be caused by tires that are out-of-round or badly worn due to some failed suspension component. Have a technician, such as our experts here at YourMechanic, check for looseness in the front...
Check Engine Light - 2013 Chevrolet Malibu
Hi there: Sometimes minor fender bender can trigger other issues to appear, especially if a loose sensor or wire was damaged during the incident. If the engine is making a weird sound while the heater is active, it's possible that...
Can I drive with just one lug nut loose on one tire? The nut is stripped so I cannot take it off. But 3 out of 4 nuts are on tight
Hi there. I've seen many vehicles on the road with a lug nut missing and it does seem to work. However, what these people are unaware of is that improper/uneven wheel nut torque is a major cause of brake vibrations....
I need a motor mount car shaking pretty bad
Depending on the motor you have you may have to support the motor and at the same time lower sub frame to replace the motor mounts. I would recommend getting a mechanic with the capability to replace your motor mounts....
I have a 2004 Dodge Ram 1500 5.7 Hemi engine V8
Hi There, It sounds like you may have a couple of separate issues going on here. The idling problem may suggest you have a dirty or faulty idle air control valve. The idle air control valve (https://www.yourmechanic.com/services/idle-control-valve-replacement) monitors the air...
Speedometer is jumping and my car is jerking
This could be related to a couple of possibilities. The [instrument voltage regulator]((https://www.yourmechanic.com/services/instrument-voltage-regulator-replacement) regulates the voltage supplied to the various gauges in your vehicle’s dash. When this is not working properly, this may cause the gauges in your dash to...

Related articles

Symptoms of a Bad or Failing Oxygen Sensor
Common signs of a faulty car oxygen sensor include the Check Engine Light coming on, bad gas mileage, and a rough idle.
The Top 5 Selling Cars in Florida in 2012
Florida Florida offers great weather year round, and the fact that snow and ice never factor into the equation means drivers don’t have to focus on the overall vehicle handling as they do in other states. The best selling cars...
How to Clean an Idle Air Control Valve
Maintenance of an idle air control valve includes cleaning it from time to time to ensure it lasts long. It keeps your car idle level at normal.