Skip the auto shop - Our mechanics make house calls

Q: engine misfire. 1995 Toyota Corolla

asked by on

the engine skips while driving but not at an idle. it can drive at any speed but every once in a while it will cut out for a second. I have replaced the wires, plugs, cap rotor, and all internal components of the distributor. I also replace the fuel pressure regulator . when it first died it kept misfiring and then died. it was only when I replaced the insides of the dist the tit ran again and usually when cold it starts and runs fine and then it starts to miss. I can drive for miles and no problems and then a bunch of misfires. has mechanics confused? it passed smog with only a slightly high Co reading but nothing anyone could pinpoint​.

My car has 180000 miles.
My car has an automatic transmission.

A: Hello. These types of issues can be hard to...

Hello. These types of issues can be hard to diagnose. Most of the time they are caused by a failure within the distributor itself. Also common is the shaft being slightly worn, which will cause the RPM reading to be off at certain times and lead to the vehicle performing like this. I have also seen the fuel pressure drop off from a bad fuel pump or clogged fuel filter cause misfires, so these should be checked also. If you would like to have this looked at, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose the misfiring problem and have this properly corrected.

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: Clear liquid is leaking from the right side of the car, where could this be coming from?

It sounds like you may have an axle seal leaking. This may or may not have been caused by the axle replacement, or the seal could simply be hard and brittle. Any seal can become hard and brittle over time...

Q: Car sounds like belt is loose

It may be possible that the belt that was installed was an incorrect size for the vehicle. I would have your vehicle tested to see if the belt on the vehicle is the correct one or if the noise is...

Q: How do I turn on the headlights?

The headlights should be used whenever you are driving in dark conditions. To turn them on, rotate the light switch (which is located on the end of the turn signal lever), to the headlight on position. When the headlights are...

Related articles

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...