Petrol engines losing water - Revision history

HarryMann: /* Case History */

2008-07-31T00:37:01Z

Case History

← Older revision		Revision as of 00:37, 31 July 2008
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	New VW thermostat fitteda while ago...		New VW thermostat fitteda while ago...

	'''T~~"onion~~:''' Sounds like the sleeve/s (cylinder/s) gasket/s have gone		'''T''Onion:''' Sounds like the sleeve/s (cylinder/s) gasket/s have gone

	'''Mocki:''' Sounding like a duff head to me		'''Mocki:''' Sounding like a duff head to me
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	Not a good idea to run without the thermostat if that's been suggested, it acts as a restrictor so the coolant travels all around the engine otherwise you get localised overheating.		Not a good idea to run without the thermostat if that's been suggested, it acts as a restrictor so the coolant travels all around the engine otherwise you get localised overheating.

	'''T'onion:'' Do a compression test!		'''T'onion:''' Do a compression test!

	'''Laurie:''' It is possible to use a gadget from fleabay to check if compression gas is getting into the water. You may find a garage to do that locally. A compression test may not throw up the problem. Run a search on head tools in fleabay.		'''Laurie:''' It is possible to use a gadget from fleabay to check if compression gas is getting into the water. You may find a garage to do that locally. A compression test may not throw up the problem. Run a search on head tools in fleabay.
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	I left the van at fast tickover for over 40 minutes and noticed that when it got a little too hot the fan came on as it should and all appeared ok. I have driven it for the last few days with absolutely no problemo's. So thankyou to the author of the thread who said "when it's done, do it again, then do it again!"		I left the van at fast tickover for over 40 minutes and noticed that when it got a little too hot the fan came on as it should and all appeared ok. I have driven it for the last few days with absolutely no problemo's. So thankyou to the author of the thread who said "when it's done, do it again, then do it again!"

	'''HarryMann:'' Good result, best to persevere, and start with the basics... Lots of good ideas there for others who have hot/cold syndrome, or slight long-term water loss		'''HarryMann:''' Good result, best to persevere, and start with the basics... Lots of good ideas there for others who have hot/cold syndrome, or slight long-term water loss

	==Links to similar topics==		==Links to similar topics==

HarryMann: /* Case History */

2008-07-31T00:35:47Z

Case History

← Older revision		Revision as of 00:35, 31 July 2008
Line 3:		Line 3:
	New VW thermostat fitteda while ago...		New VW thermostat fitteda while ago...

	'''T'onion:''' Sounds like the sleeve/s (cylinder/s) gasket/s have gone		'''T"onion:''' Sounds like the sleeve/s (cylinder/s) gasket/s have gone

	'''Mocki:''' Sounding like a duff head to me		'''Mocki:''' Sounding like a duff head to me
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	'''Laurie:''' It is possible to use a gadget from fleabay to check if compression gas is getting into the water. You may find a garage to do that locally. A compression test may not throw up the problem. Run a search on head tools in fleabay.		'''Laurie:''' It is possible to use a gadget from fleabay to check if compression gas is getting into the water. You may find a garage to do that locally. A compression test may not throw up the problem. Run a search on head tools in fleabay.

	'HarryMann:''' That sound like a CO test, which you might also ask a garage to do for you... if it does show CO in water then that's head gasket (intrenal cylinder sealing ring)		'''HarryMann:''' That sound like a CO test, which you might also ask a garage to do for you... if it does show CO in water then that's head gasket (intrenal cylinder sealing ring)

	'''Mocki:''' Yep, i had a head with a minute hole in it between the water channel and the combustion chamber, so small you could hardly see it, it looked like a spec of muck, but it was enough to push combustion gases into the watersystem, and cause airlocks and thus overheating...... i have some pics on the other pc, ill upload them if i get time...........		'''Mocki:''' Yep, i had a head with a minute hole in it between the water channel and the combustion chamber, so small you could hardly see it, it looked like a spec of muck, but it was enough to push combustion gases into the watersystem, and cause airlocks and thus overheating...... i have some pics on the other pc, ill upload them if i get time...........

HarryMann: /* Case History */

2008-07-30T11:59:52Z

Case History

← Older revision		Revision as of 11:59, 30 July 2008
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	'''Mocki:''' Yep, i had a head with a minute hole in it between the water channel and the combustion chamber, so small you could hardly see it, it looked like a spec of muck, but it was enough to push combustion gases into the watersystem, and cause airlocks and thus overheating...... i have some pics on the other pc, ill upload them if i get time...........		'''Mocki:''' Yep, i had a head with a minute hole in it between the water channel and the combustion chamber, so small you could hardly see it, it looked like a spec of muck, but it was enough to push combustion gases into the watersystem, and cause airlocks and thus overheating...... i have some pics on the other pc, ill upload them if i get time...........

	'''Ken Simmonds:''' Similar symptons, water loss and hot/cold./hot/cold. I eventually plumbed the header tank into my compressor and discovered a slight leak from the pressure cap at about 14lbs/sqin. As I have said in a previous post a new blue plastic pressure cap from GSF solved the problem although I did subsequently have to fit the new heads as the threads got buggered when I fitted a new eshaust system. I definately recomend a pressure test but note that even a very small leak will dump enough water to cause your problem over a hundred miles or so. The advantage of doing it cold is that the leaking water will not evapourate and destroy the evidence. There is a bit of a ~~spageti~~ junction of small bore pipes running around the engine bay so I guess that would be a good place to start.		'''Ken Simmonds:''' Similar symptons, water loss and hot/cold./hot/cold. I eventually plumbed the header tank into my compressor and discovered a slight leak from the pressure cap at about 14lbs/sqin. As I have said in a previous post a new blue plastic pressure cap from GSF solved the problem although I did subsequently have to fit the new heads as the threads got buggered when I fitted a new eshaust system. I definately recomend a pressure test but note that even a very small leak will dump enough water to cause your problem over a hundred miles or so. The advantage of doing it cold is that the leaking water will not evapourate and destroy the evidence. There is a bit of a spagheti junction of small bore pipes running around the engine bay so I guess that would be a good place to start.

	'''Quagmire:''' New cap fitted a hwil ago too!		'''Quagmire:''' New cap fitted a hwil ago too!
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	[[Image:Cyl_Head_WBX_Mocki_02.jpg]]		[[Image:Cyl_Head_WBX_Mocki_02.jpg]]

	'''Quagmire:''' ~~Awaiting report~~ on ~~outcome from quagmire~~!		'''Quagmire:''' I went over the whole system and replaced the old jubilee clips with new ones,could't find any leaks but I noticed that the rad pipes were not getting hot like the others in the engine bay(even with the front of the van being a danger to low-flying planes!) so I sqeezed and massaged them with the rad bleed screw out and then in and then out again. '''All of a sudden there was a gurgling noise and the expansion tank was running empty, so i topped it up again, fitted cap, and repeated again, eventually all the air came out of the top right corner of the radiator (I had noticed a cold area)'''.

			I left the van at fast tickover for over 40 minutes and noticed that when it got a little too hot the fan came on as it should and all appeared ok. I have driven it for the last few days with absolutely no problemo's. So thankyou to the author of the thread who said "when it's done, do it again, then do it again!"

			'''HarryMann:'' Good result, best to persevere, and start with the basics... Lots of good ideas there for others who have hot/cold syndrome, or slight long-term water loss

	==Links to similar topics==		==Links to similar topics==

HarryMann: /* Case History */

2008-07-30T01:22:02Z

Case History

← Older revision		Revision as of 01:22, 30 July 2008
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	'''Mocki:''' Yep, i had a head with a minute hole in it between the water channel and the combustion chamber, so small you could hardly see it, it looked like a spec of muck, but it was enough to push combustion gases into the watersystem, and cause airlocks and thus overheating...... i have some pics on the other pc, ill upload them if i get time...........		'''Mocki:''' Yep, i had a head with a minute hole in it between the water channel and the combustion chamber, so small you could hardly see it, it looked like a spec of muck, but it was enough to push combustion gases into the watersystem, and cause airlocks and thus overheating...... i have some pics on the other pc, ill upload them if i get time...........

	'''~~ken simmonds~~:''' Similar symptons, water loss and hot/cold./hot/cold. I eventually plumbed the header tank into my compressor and discovered a slight leak from the pressure cap at about 14lbs/sqin. As I have said in a previous post a new blue plastic pressure cap from GSF solved the problem although I did subsequently have to fit the new heads as the threads got buggered when I fitted a new eshaust system. I definately recomend a pressure test but note that even a very small leak will dump enough water to cause your problem over a hundred miles or so. The advantage of doing it cold is that the leaking water will not evapourate and destroy the evidence. There is a bit of a spageti junction of small bore pipes running around the engine bay so I guess that would be a good place to start.		'''Ken Simmonds:''' Similar symptons, water loss and hot/cold./hot/cold. I eventually plumbed the header tank into my compressor and discovered a slight leak from the pressure cap at about 14lbs/sqin. As I have said in a previous post a new blue plastic pressure cap from GSF solved the problem although I did subsequently have to fit the new heads as the threads got buggered when I fitted a new eshaust system. I definately recomend a pressure test but note that even a very small leak will dump enough water to cause your problem over a hundred miles or so. The advantage of doing it cold is that the leaking water will not evapourate and destroy the evidence. There is a bit of a spageti junction of small bore pipes running around the engine bay so I guess that would be a good place to start.

	'''Quagmire:''' New cap fitted a hwil ago too!		'''Quagmire:''' New cap fitted a hwil ago too!
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	[[Image:Cyl_Head_WBX_Mocki_02.jpg]]		[[Image:Cyl_Head_WBX_Mocki_02.jpg]]

	Quagmire:''' Awaiting report on outcome from quagmire!		'''Quagmire:''' Awaiting report on outcome from quagmire!

	==Links to similar topics==		==Links to similar topics==

HarryMann: /* Links to similar topics */

2008-07-30T01:21:07Z

Links to similar topics

← Older revision		Revision as of 01:21, 30 July 2008
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	[[Coolant and Heating overheating causes and fixes]]		[[Coolant and Heating overheating causes and fixes]]

	[[petrol engines cylinder head leak]]		[[petrol engines cylinder head leak]]

	[[petrol engines Overheating]]		[[petrol engines Overheating]]

	[[Techniques - Compression testing\|Compression testing]]		[[Techniques - Compression testing\|Compression testing]]

HarryMann: /* Links to similar topics */

2008-07-30T01:20:50Z

Links to similar topics

← Older revision		Revision as of 01:20, 30 July 2008
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	[[Coolant and Heating overheating causes and fixes]]		[[Coolant and Heating overheating causes and fixes]]
			[[petrol engines cylinder head leak]]
			[[petrol engines Overheating]]
			[[Techniques - Compression testing\|Compression testing]]

	==Other symptons==		==Other symptons==

	==More on coolant loss==		==More on coolant loss==

HarryMann: /* Links to similar topics */

2008-07-30T01:17:14Z

Links to similar topics

← Older revision		Revision as of 01:17, 30 July 2008
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	==Links to similar topics==		==Links to similar topics==

			[[Coolant and Heating overheating causes and fixes]]

	==Other symptons==		==Other symptons==

	==More on coolant loss==		==More on coolant loss==

HarryMann at 01:15, 30 July 2008

2008-07-30T01:15:49Z

← Older revision		Revision as of 01:15, 30 July 2008
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	[[Image:Cyl_Head_WBX_Mocki_02.jpg]]		[[Image:Cyl_Head_WBX_Mocki_02.jpg]]

	Quagmire:''' Awaiting report on outcome		Quagmire:''' Awaiting report on outcome from quagmire!

			==Links to similar topics==

	~~==Other possibilities==~~

	==Other symptons==		==Other symptons==

	==More on coolant loss==		==More on coolant loss==

HarryMann at 01:09, 30 July 2008

2008-07-30T01:09:55Z

@@ Line 1: / Line 1: @@
 '''Quagmire:''' Heaters went cold and started overheating, so i topped up and bled system again properly. It has ran fine for 2 days covering over 100 miles and then (you guessed it) heaters cold and overheated again! It hasn't leaked any water if this helps, and another thing I've noticed is that when van is at tickover it hardly throws any water back to the header tank (just a trickle), but when I increase the revs its not too bad. Please help, Ben
 New VW thermostat fitteda  while ago...
@@ Line 28: / Line 29: @@
 [[Image:Cyl_Head_WBX_Mocki_02.jpg]]

HarryMann at 01:08, 30 July 2008

2008-07-30T01:08:21Z

← Older revision		Revision as of 01:08, 30 July 2008
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	'''Mocki:''' Here are the pictuers showing the microscopic hole causing my problem a while ago.		'''Mocki:''' Here are the pictuers showing the microscopic hole causing my problem a while ago.

	[[Image:Cyl_Head_WBX_Mocki_01.jpg]]		[[Image:Cyl_Head_WBX_Mocki_01.jpg]] [[Image:Cyl_Head_WBX_Mocki_03.jpg]]

	[[Image:Cyl_Head_WBX_Mocki_02.jpg]]		[[Image:Cyl_Head_WBX_Mocki_02.jpg]]

	~~[[Image:Cyl_Head_WBX_Mocki_03.jpg]]~~