Skip the auto shop - Our mechanics make house calls

Q: Truck keeps bogs down and dies when I let off gas.

asked by on

I bought a truck and it had no gas. After I had put some in it, I drove it for around two hours. As I was turning it died and the Check Battery light came on. I popped the clutch and it started started back up, but every time I let off the gas it would die. I finally got it home, but even though it starts, every time I push the clutch it bogs down and dies, or almost dies.

It is very possible that you have a weak fuel pump. Having to keep your foot on the accelerator to keep the engine running is an indication of low fuel pressure. The pump works harder at higher RPMs in order to supply the engine with the correct amount of fuel. When the clutch is pressed down, you usually let off the accelerator slightly causing the engine to bog down. I would start by having a fuel system inspection performed by a professional from YourMechanic. Once the fuel system has been inspected the faulty part should be identified. The ignition system is likely not the cause in this circumstance due to the having to press the accelerator to stay running symptom. If the fuel pump is weak and in need of replacement, have the technician replace your fuel filter as well. A new fuel pump with a dirty fuel filter can cause problems later.

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

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Car starts up but stalls and the traction slip symbol comes on. What can cause this?

Hi there. Remove the battery cables and let the vehicle sit for about 30 minutes with no power. Then hook up the battery cables and turn on the key. Let the vehicle sit for about 1 minute. This will allow...

Q: I have to replace an upper radiator hose, what steps must I take to access the hose and remove it.

Access to the hose is clear. On a vehicle of this age, if you are replacing one radiator hose, really all should be replaced, including the heater hoses, due to the inevitable deterioration of rubber products. YourMechanic does perform radiator...

Q: Problem with valve injectors.

There quite a few things that will need to be checked. Fuel pressure and fuel pump volume need to be looked at along with a fuel sample. Incorrect fuel pressure or low fuel volume will effect the amount of fuel...

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 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...
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...