How to unplug a clogged catalytic converter. Take your car to a freeway and drive at the speed limit for 1 to 2 miles. Common symptoms of a clogged catalytic converter:
One of these products is Davico’s Sledgehammer Fuel Additive Kit. Lower the converter to the ground and set it aside. Once a cat becomes clogged, the exhaust can overheat the catalysts inside, melting/fusing them together and creating a more significant blockage.
Unfortunately, the symptoms of a failing catalytic converter are very similar to the symptoms experienced by many other engine problems.
The cleaner is designed to remove dirt and deposits from intake valves, fuel injectors and ports. Whereas with an exhaust back pressure gauge, the normal back pressure should be around 1.5 psi. First, get a catalytic converter cleaning additive from your local parts store or gas station.
Use the original converter bolts to connect the bypass tube and tighten them with an adjustable wrench clockwise.
When your catalytic converter is clogged, it can’t exhaust gases fast enough, causing the engine to “flood.” Once you’ve reinstalled the converter, take your car for a spin and see if there are still any symptoms. A clogged catalytic converter can have the same effect on your vehicle, making it difficult if not impossible to start.
A quick and easy test is to connect a vacuum gauge to a manifold vacuum port (such as the one that feeds the brake booster).
The third step is to take your car for a spin down the road. Sometimes it’s not obvious that your catalytic converter is actually clogged, so be sure to keep an eye out for these symptoms. Purchase a catalytic converter cleaner at your local auto supply store.
Then take a converter reading again.
Here’s what to do to unclog a catalytic converter: A sulfur or rotten egg odor indicates the formation of hydrogen sulfide (h 2 s), a likely sign of the catalytic converter. Reinstall the catalytic converter after it has been allowed to drain and dry.
Understanding how catalytic converters work can help you troubleshoot serious problems like plugging.
Start with the front of the converter and wipe off any dirt and debris with a clean cloth. Drowsiness or difficulty getting up and walking in the morning is a symptom of liver failure. The instructions on the can will tell you how much.