Q: Hello, the analysys of exhaust gas of my car show that it contain a lot of unburnt fuel, what is the problem? how can I solve it?
I did a check up on my car and the sensor showed that exhaust gas isn't normal. the amount of unburned fuel is more than normal and it smells like gasoline. A mechanic did some adjustment on electrical system but the problem is not solved. How can I solve the problem?
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
What others are asking
Oil leaking and engine went out after sitting for 5 months.
If oil dumped out of the vehicle and then it stopped running, there was likely a catastrophic failure and subsequent lack of oil pressure. From your description, it sounds like there is a good chance the engine is ruined. A...
Oil leak on a 1996 Dodge Neon
Watch my video "finding and fixing car oil leaks (https://www.youtube.com/watch?v=LYzTyTlnsr8)" and find another mechanic. In that video, I show how to put ultra-violet dye into the engine and then run it. The green dye fluorescents where the leak is. You...
Why is my ABS light on-on the dash?
The ABS system turns on the light when it sees a fault in one of its sensors or output components. In order to properly diagnose the system, you will need to have the ABS system scanned to see if there...
Rear brake squealing noise goes off when brakes applied.
Hey there. If the noise was not there before you replaced the brake pads on your 2014 Audi A4, you might want to try replacing the caliper clips and using a good quality brake lube anywhere the pads make contact...
My car rpm fluctuates slightly, during warm up and my temperature gauge also fluctuates intermittently.
Hi, thanks for writing in. My first impression when you described the vibration is that you may have a bad motor mount. When you put the car in Drive or Reverse, the engine shifts slightly. If the rubber in the...
There is a misfire on cylinder 2. I changed the cylinder and spark plug but am still having the misfire.
Hello. If you switched the spark plugs relating to two different cylinders and the same cylinder exhibited the same signs, then the issue is related to the other components on that cylinder. The test you performed was a great one....
Sunroof won't close all the way
Hello. A few different things may be going on. The first thing to do is make sure nothing is stuck in the crack or holding it open. This includes the track or the window itself. Make sure upon visual inspection...
How often should I get my spark plugs replaced in my 2014 Chevrolet Spark
Hello. GM recommends that you have the spark pugs replaced ever 97,500 miles. This is part of their normal maintenance schedule. If you need to have this service done, consider YourMechanic, as a certified mechanic can come to you to...
I keep burning alternators what could be the problem
It is possible that one or two of them were just bad as a new part as most alternators are remanufactured rather than brand new. I would also double check the workmanship performed on the vehicle. If you have the...
Related articles
How to Replace an Evaporation Vent Solenoid
Emissions are regulated in part by the EVAP vent solenoid which goes bad when your car fails emissions testing or has extra pressure in the gas tank.
How to Replace a Secondary Air Injection Pump
A faulty secondary air injection pump can result in increased emissions, engine performance issues, and an illuminated Check Engine Light.
How to Replace a Canister Purge Solenoid
The canister purge solenoid prevents harmful vapor from releasing into the atmosphere. A faulty solenoid will not allow you to pass an emissions test.
Browse other content
Services
Maintenance