Spray it on and let it sit for a bit, then come back and hit it hard again after it softens.... BTW - Berryman's brand only, the other cheapie carb cleaners are useless and lack the proper chemicals.

O'Rielly's Auto Parts sells the 20 oz. Berryman's B-12 spray can for about $4.85, you'll need a couple at least.

Best,


Doug