Skip the auto shop - Our mechanics make house calls

Q: I have a 1994 Ford F150 XL 4x4 with a EFI 5.0 liter v8 it has a hard time starting when then engine is warm

asked by on

It does not like to start very well when it is warm outside and or the engine is warm after letting it sit for and hour that is when it has the trouble starting. it also starts shaking every once and a while when it comes to a stop light. it has had a new fuel pump put in but i dont think that is the problem because it starts perfectly when it is cold outside and the engine is cold. lately the engine has started to not want to hold a idle very well. all of the problems that i have said have slowly gotten worse over the passed 3 year and i honestly need someone who can help me out and tell me as to what it might be or what it is.

My car has 303116 miles.
My car has an automatic transmission.

Hello. You are most likely having problems with the fuel injectors clogged and there is carbon built up on the valves. Try using an injector and combustion cleaner to clean injectors and reduce carbon buildup on the valves. Have the truck checked and work done by a mechanic if you need help. The ignition should be replaced as needed like plugs, wires, cap and rotor. Injectors need to be professionally cleaned using a professional cleaner and not just some fluid put in the fuel tank.

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
  • I have a 1994 Ford F150 XL 4x4 with a EFI 5.0 liter v8 it has a hard time starting when then engine is warm

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: Truck won't start

Hello there, many common faults will cause your 1994 Dodge Ram to have issues starting. It is great you have replaced the battery already as this is the most likely reason for the truck not starting in most cases. There...

Q: Steering tight

Hello. If the fluid was really low, then there is a leak that needs to be found and fixed. Most of the time on this car though when the steering is hard it is because the power steering pump has...

Q: Dew on clutchpack

The morning dew will not hurt the clutch pack.

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 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...