Question about 1992 Toyota Celica

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92 celica gt 2.2, i ran 1/3 pint of sea foam through a vacuum line, and now there is a moderate vacuum leak, i sprayed brake cleaner around different spots and get a spike in idle when i spray it around the tube going between the egr valve and cylinder head. seems to be most apparent around the head side. tube does not feel rough or rusty, nut seems tight

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The EGR valve may be the cause of your vacuum leak. It has an internal diaphagm that can break.

Posted on Mar 14, 2011

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Posted on Jan 02, 2017

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1 Answer

The best way to check for a vacume leak


Start the car and take a can of brake cleaner and spray around areas where vacuum lines connect to the engine. If the engine speeds up when you spray the brake cleaner, there's a leak in that area.

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1 Answer

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It could also be a dirty Mass Air Flow sensor, faulty oxygen sensor on bank 2, plugged catalytic converter, or plugged or faulty fuel injectors - thus, it would never hurt trying the sea foam.

Also ensure the filter is not over-oiled

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