Three Symptoms of a Busted Chevrolet Monte Carlo Vapor Canister
The vapor canister is one part the Chevrolet Monte Carlo that keeps your car clean and environmentally friendly. It collects the harmful gasses from the fuel so that it's reused for combustion. It works similarly to how a catalytic converter filters exhaust fumes. If this part fails, you car is one step closer to failing an emissions test. The vapor canister is a fairly reliable part that shouldn't need replacement. However, the stock one in the Monte Carlo is a problematic piece that's constantly been reported to need a replacement. The following are three symptoms that can tell you if you have a busted vapor canister in your car:
Strong fuel odor
The fact that your car mostly runs and depends on fuel shouldn't be noticeable for you-unless you're running low on it and it's time to visit the gas station. However, if your nose picks up a strong odor that smells like pure and unprocessed fuel, this isn't a good sign. This is the scent that the vapor canister is supposed to collect and keep. The fact that the stench is making its way out of the fuel system and into your nose is a symptom of a busted one.
The check-engine light should come up if you have any sort of problem with the parts that involve getting the motor running. Once you take the car to get scanned, getting the code P0440 should make things clear that you have busted vapor canister that needs to be serviced. You can clean and remove any clogs in it if it's still repairable. Unfortunately, most vapor canisters of the Monte Carlo are beyond repair and need a replacement.
Sudden pressure drop
There should be enough pressure inside the fuel tank for the vapor canister to work properly. If it gets too low for the part, it struggles and eventually breaks. Pump some nitrogen in the system to test for leaks. Any sudden drop in pressure indicates either a cracked canister or holes in the fuel hoses. If you also notice that there are drops of fuel under the engine bay or somewhere near the tank, there may be holes in that region as well that you should take care of immediately.