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Help Support Hardline Crawlers :
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Tech & Fab
antifreeze/water evporation
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<blockquote data-quote="Moneypit1" data-source="post: 1347083" data-attributes="member: 16627"><p>It's NOT evaporating. Pull the plugs, look for one that's abnormally clean. If so, then that's the cylinder that's burning antifreeze. If all are uniformly dirty, then check the crankcase for oil/water contamination. Pull the dipstick, if it looks like cottage cheese, then that's your problem. If not that, then look REALLY closely at the block, heater hoses, etc. Coolant escaping from a cracked head to the environment will evaporate instantaniously from the super-heated engine. However when the block/head cools, the crack will shrink back shut and hold pressure. However you still likely can find trace evidence of staining where the leak is escaping. None of those, then check the carpet around the passanger footwell for signs of a heater core leak. Also, a lot of heater cores have a drain hole (for this reason) which will spill the leaking antifreeze under the car. Easy way to check is turn the defrosters on high (both temp and fan speed) and see if the windshield fogs up. Keep looking, you'll find the problem. It might be as simple as a loose hose clamp on the lower radiator hose. Or a pin-hole leak in the radiator.</p></blockquote><p></p>
[QUOTE="Moneypit1, post: 1347083, member: 16627"] It's NOT evaporating. Pull the plugs, look for one that's abnormally clean. If so, then that's the cylinder that's burning antifreeze. If all are uniformly dirty, then check the crankcase for oil/water contamination. Pull the dipstick, if it looks like cottage cheese, then that's your problem. If not that, then look REALLY closely at the block, heater hoses, etc. Coolant escaping from a cracked head to the environment will evaporate instantaniously from the super-heated engine. However when the block/head cools, the crack will shrink back shut and hold pressure. However you still likely can find trace evidence of staining where the leak is escaping. None of those, then check the carpet around the passanger footwell for signs of a heater core leak. Also, a lot of heater cores have a drain hole (for this reason) which will spill the leaking antifreeze under the car. Easy way to check is turn the defrosters on high (both temp and fan speed) and see if the windshield fogs up. Keep looking, you'll find the problem. It might be as simple as a loose hose clamp on the lower radiator hose. Or a pin-hole leak in the radiator. [/QUOTE]
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