Skip the auto shop - Our mechanics make house calls

Q: Car cranks, but will not start. If I pull the fuel line off, it starts up to 500 rpm then dies.

asked by on

I have made sure it gets fuel and spark. Vehicle will not run, it keeps flooding the engine. I have went through all sensor and grounds, I have no idea what is wrong.

My car has 110000 miles.
My car has an automatic transmission.

Hi there, thanks for writing in. I’d be happy to help.

You can disconnect the vacuum line to the fuel pressure regulator on the fuel injector rail to see if fuel comes out of the regulator. If it does, then replace it and change the oil and filter and clear the codes. If no fuel is coming out of regulator, then have fuel pressure tested to see if one of the fuel injectors is stuck open flooding the engine. Then, replace the fuel regulator or leaking injector. Try to scan the vehicle and compare readings of the sensors to specifications. The mass air sensor may be causing the excessive fuel problem.

If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make any repairs as needed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  • Home
  • Questions
  • Car cranks, but will not start. If I pull the fuel line off, it starts up to 500 rpm then dies.

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: Won't turn over or start , everything works but the lights where the odometer is

Prior to performing diagnostics be sure you have a fully, 100% charged battery that passes a load test. Confirm that the engine immobilizer system (security system) is not activated thus preventing the car from starting. If the immobilizer system is...

Q: O2 sensors

Oxygen sensors don't work in that voltage range. Oxygen sensors range from .1 to .9 volts. When the vehicle is running normal the sensor ranges between .4 to .6 volts. The O2 voltage should change constantly going above and below...

Q: Had the hezd gaskets replace from bring blown now car still want start

Confirm that all electrical connectors were reconnected and are making secure contact and that there are no obvious vacuum leak (disconnected hoses). If the starter is turning the engine over and at sufficient RPM (i.e., battery is fully charged and...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.