Q: No fuel on drivers side of engine.

asked by on

Car starts, runs rough. Only fuel on passenger side. Fuel pressure 60 psi on passenger side fuel rail. Has spark on both sides. Hesitates big time. Unplugged throttle position sensor and still ran. Unplugged camshaft sensor didn't make a difference.

My car has 239000 miles.
My car has an automatic transmission.

A: Your measured fuel pressure of 60 psi is wa...

Your measured fuel pressure of 60 psi is way too high - spec pressure should be 35 psi +/- 5 psi. The fuel pressure regulator/modulator has likely failed, or the fuel return line has been restricted in some way. This excessive fuel pressure is causing rich mixtures and the rough running you describe. It is also clogging your catalytic converter. I suggest you contact YourMechanic to arrange for one of their professional mobile mechanics to come to your location and perform a rough running engine inspection on your vehicle. This inspection will confirm this diagnosis and identify the specific component which has failed and needs to be replaced.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: How do I use the autolights?

When the autolights are turned on, your vehicle will automatically turn on and turn off the headlights depending on how light it is outside. To turn on the autolights, rotate the Headlamp Control knob to the autolight setting.

Q: Car won't start; theft light on

The anti-theft system may be experiencing a fault, and in most cases, will store a code pointing to the problem component. Your symptoms are also close to those of a failing starter assembly. In this case, the vehicle may start...

Q: A fuse blows when power seats are used

Hello there, while this is not the most common issue, it does happen from time to time. There is usually 2 fuses per seat depending on opinions and if the vehicle has memory seats. The seats use a separate switch...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...