View Full Version : Hyundai failed block test at repair shop. I want to

08-01-2010, 04:44 AM
Hello I want to know how to do a block test on a 2000 hyundai accent. What tools will I need and how is it done. Thank yoy Ian

08-01-2010, 02:32 PM
can you tell me how to do a block test on engine.

08-02-2010, 04:22 PM
Hi Ian,

You need a combustion leak detector - you should be able to pick one up at most any auto parts store. You fill it with the special fluid and attach it in place of the radiator cap; run the engine and squeeze the bulb on the tester. If the solution changes color, combustion gases are getting into the cooling system. Most of the time this indicates a bad head gasket, but a cracked head or cylinder block could also be the cause.