Skip the auto shop - Our mechanics make house calls

Q: Can anyone tell me if the half moon metal part inside of the distributor, that the cam sensor reads off of, is supposed to have an

asked by on

Have been dealing with a misfire issue. Vehicle misfired at idle, gets worse under load, shakes and bucks. Seems like we are having a timing or fueling issue. Have done complete tune up, replaced fuel pump and filter, replaced injectors, cleaned fuel rail, and maf.

My car has 189000 miles.
My car has an automatic transmission.

Hello. Although you have done considerable work on the fuel system, it may be a good idea to check the fuel pressure coming from the fuel rail. This will determine if the fuel pressure regulator is working efficiently, which may be the source of your problem. Other issues that may be contributing to your misfiring issue may include failing spark plugs or coils. I would recommend having your misfiring engine inspected to confirm there is a problem, get an accurate assessment of damage and cost estimate for repairs.

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
  • Can anyone tell me if the half moon metal part inside of the distributor, that the cam sensor reads off of, is supposed to have an

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: How do I check the health of my tires?

Periodically checking the health of your tires is important. Tires that are in bad shape are an extreme safety liability. To check the health of your tires, visually inspect them. You should look for excessive wear and tear, uneven balding...

Q: Door locks, dome light, and headlights not working.

Hi there. Electrical issues are fairly common on your vehicle. If all of these circuits quit working at the same time most of the time it is due to a failure in the fuse box. The only way to diagnose...

Q: My car has only misfired twice but idles perfectly. The Check Engine Light is also on - 2012 Buick Regal

Hi there. From the description you have provided, concerning your vehicle's Check Engine Light and two misfires, it is advisable that you get a second opinion. A timing chain problem would cause your vehicle to have a consistent drivability issue....

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...