Skip the auto shop - Our mechanics make house calls

Q: Engine runs like it is flooded hard to start

asked by on

About two weeks ago I replaced the fuel pump on my truck every since it has not run right it is sluggish pops snaps but it never completly stops running while going down the road whenit starts running bad I can turn key of then back on and it wll run fine untill I get to the next stop light

My car has 280132 miles.
My car has a manual transmission.

Hi there. Most of the time this is caused by a bad fuel pressure regulator. Typically, an old fuel pressure regulator will be blown out from the new fuel pump due to the higher pressure. This is going to be located inside of the intake manifold. When the regulator fails it allows too much fuel to be dumped into the engine which causes it to flood out and run like this. It can also be caused by other things, but this is most common. If you want to have this fixed, consider YourMechanic, as a certified mechanic can come to your home or office to replace your fuel pressure regulator for you if 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

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: Knock or rattle

The most likely cause of the issue you are having would be a loose heat sheild on your exhaust system. When the gas pedal is being depressed, the engine rpm goes up which increases the flow through the exhaust. This...

Q: My car ran out of gas and now it will not start even after putting gas in the tank

If the starter motor itself is not functioning (i.e., no engine cranking), then the starter circuit has to be diagnosed. If the starter motor is functioning, but the car is not starting, you could have a circumstance where the fuel...

Q: My 2003 Pontiac Bonneville will run well for a short time then it will bog down chug and die.

Hey there, thanks for writing in about your 2003 Pontiac Bonneville. You'll need to have the fuel pressure checked when it dies to see if the fuel pressure is too low causing the loss of power. You should also have...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.