Q: cylinder 3 misfire evap large leak

asked by on

i have a code for the problem on my 2005 trailblazer po302,po455,po410,po302 what do you recommend

Hi there. Among the error codes you listed, the concerning one is P0045, which indicates a leak in the EVAP system exists. The leak can be caused from a variety of components. The most common is related to the fuel filler cap which could be missing, not correctly installed, not sealing properly or may be damaged to the top of the filler neck. The next most frequent problem is a leak in a hose. Hoses on the breather system tend to crack with age including the large connecting hose on the filler neck to the tank. The Evaporative Emission System has a purge valve to regulate pressure in the system and this will need to be checked by a technician. However, in order to clear the codes, you need to have a professional mechanic complete a check engine light inspection to reset the codes; so either way, it’s best to have a mechanic inspect your vehicle first before any repairs are made.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. cylinder 3 misfire evap large leak

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: What could be the causing loss of power while accelerating leading to engine stalling? 2011 Chevrolet Aveo

Hi there - based on the symptoms you describe, I suspect that either the throttle position sensor or the fuel pump (or fuel pump relay) are failing. The result is either incorrect throttle position reported to the engine computer, or...

Q: My truck had no oil and. I. Put oil now it's reading zero. Pressure can I drive home

Hello, thank you for writing in. If the oil is empty, then there is likely a severe oil leak and you are going to have more problems. Do not rely on the oil pressure gauge on your dash, as they...

Q: Seat belt not working.

More than likely the buckle needs to be replaced. It's unsafe and illegal to drive without a seatbelt, so I suggest you get this fixed as soon as possible. Any qualified mechanical, like one from YourMechanic, can handle this task...

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...
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...