Question about 1985 Volkswagen agon

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Water leaking from head

Is this the sign off the corrosion problem, and will I have to repair both cylinder heads.I have a 1990 caravel. This is the second time this has happened, the first time was messy.The leak this time is slight.

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Are you using a Phosphate free antifreeze. This should NOT happen if you are. Phosphates in regular antifreeze eat and pit the aluminum that the heads are made of. Have you ever seen an old piece of aluminum that's all powdery and pitted and nasty ? phosphates in regular antifreeze do it even worse. sounds like you will have to replace the leaking heads. Then make sure you never use regular antifreeze in your bus. Dexcool is a good one to use but there are lots of other brands now that so many autos have aluminum heads. also if your going to replace heads I would get performance heads. little bit more money but way WAY worth it. More power is much needed in any bus. :)

Posted on Mar 03, 2009


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Coolant leak but not overheating at all

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What is causing overheating?

Check your oil dipstick. If there's a grey/creamy sludge on it that means water is finding its way into the oil system. Your cylinder head gasket/cylinder head is faulty.

Fill your coolant bottle. Leave the top off. Start the engine and watch the coolant level. To begin with, you will see air bubbles escaping. This is normal. If bubbles continually appear or the coolant level 'shakes' violently, this indicates that exhaust gas is finding its way into the cooling system via a cracked cylinder head/faulty head gasket. Also look at the exhaust gas - is it clouds of white? If so - that's steam from water being burnt in the engine - a head problem.

Over heating is a sign of a cracked cylinder head/faulty head gasket.

The other causes of overheating includes a stuck thermostat or a leaking/blocked radiator.

If there's no sign of a coolant leak underneath your vehicle - suspect the cylinder head gasket

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4 cyl. has water in oil has been running good, wouldn't heat thought thermostat, pulled dipstick,milky, pulled plugs normal, do not smell antifreeze in exhaust ??

You will need to remove the cyl head and check for corrosion and/or cyl head gasket. Best is to take the cyl head to a reputable machine shop for testing and service.

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Blown head gasket in suzuki swift/signs


why not consider all signs. and let the evidence prove the puddn
head gasket. signs (huge list)
water and steam gushing from rad cap or overfill tank
carbon in the rad neck hole, cap off cold.
oil in same place
water in engine pan, (milky)
steam out the tail pipe after engine fully warm.
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I have oil leaking into cooling system, but no water in the engine. My oil level is dropping. What can cause this and what is the fix?

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Oct 18, 2011 | 1990 Toyota Corolla

1 Answer

04 chevy impala has white smoke coming from the exhaust but no leaking

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1 Answer

My Golf suddenly now starts to overheat badly, and although the oil buzzer goes off, the temp buzzer stays quiet. It's full of oil, and antifreeze.

Hi could you try doing this:
get the engine warm then turn the heater on to its hottest setting then turn it on, if you only get cold air then this points towards the thermostat staying shut and if this is the case it will need replacing before you do any damage to the cylinder head and or cylinder head gasket.

if you have hot air coming out the the problem could be one of the following problems.
1, check for any signs of leaking coolant if you have a leak then this lets air into the system causing an air lock this stops the water pump pumping the coolant around the system and this prevents it from cooling, the leak could be either split hose, damages rad or leaking water pump so have a good look around all the engine and pipes looking for leak, the water pump is located where the timing belt is so have a good look around here.
2, water pump could be damaged and may need replacing.
3. worse case you head gasket could be damaged, if you find no leaks ant the thermostat is ok then your going to need to get the head gasket checked your car will need taking to a garage to have a color test done this checks the coolant for signs of engine gasses and if they are found it indicates head gasket failuer.
it will cost next to nothing for them to do this test.

if it is the head gasket then you need to find out what caused the head gasket to fail, it could have failed on its own or the water pump or thermostat could have caused it to fail.

check the oil for signs of water if you have a white substance if the oil filler cap then this is a sign water is getting into the oil via the head gasket, also check the coolant for the same signs of a white substance this indicates head gasket failure and the only solution would be to have the engine re-built to replace the cylinder head gasket.
this is a big job to do

let me know how you get on or if you need further assistance ok

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2 Answers

I have a 1990 gmc 1500 5 speed that is overheating and leaking coolant i changed the radiator hoses,thermostat, and water pump, and i know the leak is not coming from the radiator what do i do next?

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1 Answer

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