Skip the auto shop - Our mechanics make house calls

Q: Trouble starting, misfires, dies when you let off the gas.

asked by on

The car only starts when the gas is pressed, as soon as you let off the gas, it dies. Has new spark plugs and fuel filter. I bought the car from a guy that had it sitting for almost 3 years, its driving fine for about 2 months. It died a couple times, but started right up so I didnt think to much about it. It started dying a lot of stops, so I changed the fuel filter. It got worse. Sounds like a bad misfire. I was almost home yesterday and it got real bad, it died and wouldn't start till I held my foot down. Got about 50 feet down the road and the top radiator hose blew, but then the car ran fine. Thankfully I was less than a block away at that point. Any ideas? I have a video of what it does when I start it also. Please please please help me :/

A: It sounds like you have a real bad vacuum l...

It sounds like you have a real bad vacuum leak. After you replaced the radiator and hoses to get it running again check all the vacuum hoses to make sure there is no broke hose.

If you find there is no broken hose, then check the distributor cap for oil in it and misfiring marks in the cap or on the rotor. If you need further diagnosis, then have a qualified technician, such as one from YourMechanic, come to you to test the systems and diagnose your misfiring issue.

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: Wont stay running.

Hello, thank you for writing in. When diagnosing a stall or lack of power, always start with the simple components. If you have not already, check for proper spark and fuel. You can check the signal to the spark at...

Q: The right rearview mirror defroster isn't working but the left one is. What should I do?

According to the wiring diagrams I have available to me, you are correct that both of the mirror heater assemblies are powered through a common fuse. I would suggest gaining access to the electrical connector on the passenger side mirror...

Q: what will happen if i drive on crunchy front berrings

Hello...it is wonderful to hear from a Tercel owner!! I owned a 1985 Tercel for 25 years!!! One day, on the freeway, the rust on the front sub-frame finally caused the car to basically "crack" where the control arm is...

Related articles

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...