Repair Safety Notice:
This information is for general instructional purposes only. Vehicle repair can be dangerous.
Verify all information, follow manufacturer service procedures, use proper tools and safety equipment,
and consult a qualified repair shop when needed.
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SCGRANTURISMO
AUTOMOTIVE REPAIR CONTRIBUTOR
4,897 POSTS
Hello,
This is probably going to be a blown head gasket. The foam is probably going to be from combustion gases mixing with the coolant and pressurizing the cooling system. Here are a couple of tests to see if your vehicle's head gasket[s] are blown below: