Skip the auto shop - Our mechanics make house calls

Q: I was only able to find acrylic lacquer thinner, could I use if to clear my clogged catalytic convert?

asked by on

I'm not really sure if there is a different between acrylic lacquer thinner and lacquer thinner and if I could use the acrylic lacquer thinner to unclog my catalytic convert.

My car has 90000 miles.
My car has an automatic transmission.

A: I am not sure who would have told you to cl...

I am not sure who would have told you to clean or unclog the converter out with lacquer thinner, but that is not a very good idea, and you shouldn’t do it. The thinner may damage the converter internal material, as well as damage the oxygen sensors behind the catalyst. If the converter is clogged, the only proper repair would be to replace it. I do not recommend cleaning it out at all. I have been working on vehicles for over 20 years and have never heard of cleaning out a converter with thinner or any other liquid. Some diesel engines have an injection system that injects a urea based liquid into the catalyst when it is hot to burn off the carbon soot, which is different than what you would be trying to accomplish here. If you would like to have your catalytic converter replaced, then I suggest contacting a professional, such as the ones available from YourMechanic, to perform this for you.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Ignition interlock problem

Hello. The neutral safety switch allows you to start the car while its in park or in neutral. This is likely the cause of this problem. It is also a possibility that there is a problem with your shifter. You...

Q: oil leak

There are quite a few oil seals and gaskets on your engine and so the exact source(s) of the leak would have to be pinpointed during an oil leak diagnostic. If you do have oil leaks, as many leaks as...

Q: What does the brake Warning Light mean?

The brake Warning Light is located on your instrument panel. This light will illuminate for two reasons: the parking brake is engaged, or the brake fluid is low. When you notice that the light is on, disengage your parking brake....

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 Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...