Question about Cars & Trucks
Yes it is pressurizing and probably from a cracked head or a corrosion hole in the bore in the compression area of the cylinder. These would not show up in a compression test as the readings are low compared to the compression of an operating engine.
Posted on May 18, 2014
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Posted on Jan 02, 2017
SOURCE: possible cracked block or head
Have you checed the thermostat, often when they are locked closed a vehicle will overheat and "regergitate" fluid through the overflow. And just so you know noone can tell by a "carbonation test if you have a problemb. (a carbonation test tells you af a change in ph.) wich is not always the affect or result of a blown head/ head gasket.
My sugestion would be change the thermostat. ($20.00) flush cooling system. (Do it yourself $15.00/ and a hose) Drain water and fill with 50/50 mix of coolant and water.
Posted on Jul 25, 2008
sorry i still think its a gasket problem,or water ports---but without bringing it to yard for me to have a look its a bit difficult and iam in spain.These *** motors use a smaller rad cap with two seals in ,so it can draw the coolant back in on cooling,but iam of the opinion that its drawing in a slight water ingression causing the idle problem.Go on give it a birthday and pull the head off and check its level and not warped ,also the water ports are not dissolved to any extent.
Posted on Jan 03, 2009
Running hot will cause head gasget to fail. Or if head is not torqued properly, or a faulty head gasget. Pressure in cooling system means, blown head gasget or cracked head.
Posted on Mar 05, 2009
Check that you are not overfilling the cooling system.
Header tanks need to have some space for coolant expansion.
The system coolant level may stabilise at the lower level.
Posted on Jun 28, 2009
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