91 chevy throttle body covered completely still runs. Intake gaskets maybe?

[someotherguy]

DO NOT use "brake cleaner" to check for vacuum leaks.
1. Some of it is not flammable. Useless for checking for leaks
2. Some of it degenerates into deadly Phosgene gas when burned. Can truly FUUK YOU UP if you breathe it. Maybe kill you.

An unlit propane torch can work. I've done that. I actually prefer aerosol carburetor cleaner.

But NOT AEROSOL BRAKE CLEANER.

Beat me to it.

I recall this story from '09 and had shared it then.. was an eye-opener:

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Richard