lossing water in the header tank
#1
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lossing water in the header tank
i cant see no leaks, i have just has a 20g fitted and im wondering am i losing this water out of the over flow because the water is heating and expanding to much and am i filling the header tank up to much the engine is forged with steal gaskets and apr head bolts and this was done just over a year ago, or is this a possible air lock, ps the thermostat is only a year old and both rad pipe are only a year old and also the car is not over heating and there is a nice flow of hot air from the heaters
Last edited by happydude303; 08 December 2009 at 12:25 AM.
#7
Happydude, before you go changing thermostats (which shouldn't on the face of it be necessary), what concentration of coolant to water are you currently using?
Also, regarding your question of whether this could be an airlock, have you recently drained and refilled the system? How long have you had the 20g on the car and has this apparent coolant loss been happening ever since?
Is there any evidence of dried coolant residue around the overflow tank cap (by the nearside headlight) btw, and do you see coolant bubbling up into it when the engine is hot?
Also, regarding your question of whether this could be an airlock, have you recently drained and refilled the system? How long have you had the 20g on the car and has this apparent coolant loss been happening ever since?
Is there any evidence of dried coolant residue around the overflow tank cap (by the nearside headlight) btw, and do you see coolant bubbling up into it when the engine is hot?
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im not sure what the mix is, that was done by the garage who built it and the 20g has only been on for two weeks and its started to happen since and i now when they change the turbo they top it up, i was think the system might not have bleed out full but have been thinking as the pressure and heat int he engine is greater now that's why i was thinking thermostat is not keeping it cool enough and ill need to check the over flow in the day light tomorrow, what are you thinking thsi might be dude
#9
i was think the system might not have bleed out full
but have been thinking as the pressure and heat int he engine is greater now that's why i was thinking thermostat is not keeping it cool enough
You might have changed the turbo, but assuming it is properly filled and working properly, it shouldn't be boiling.
and ill need to check the over flow in the day light tomorrow, what are you thinking thsi might be dude
Also, how much loss are we talking about here? Are you constantly finding the header tank empty, or are we talking about checking it one day and finding the header an inch below the top one day, or...?
#11
If this started happening after you changed the turbo then you either have some airlocks or potentially the banjo's that supply water to your turbo may be weaping. Some new copper washers would sort that out.
Easier to see the weaping from the banjo connection when the engine is hot. It's not uncommon for this to happen after a turbo change and could be as a result of over or under tightening, equally a copper washer may not have seated properly when tightened.
Easier to see the weaping from the banjo connection when the engine is hot. It's not uncommon for this to happen after a turbo change and could be as a result of over or under tightening, equally a copper washer may not have seated properly when tightened.
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there are no leaks ive been down to se the lad who built it and it seemed fine how ever they have put a new rad cap on it as that was a an old one i will keep my eye on it and it was a very spirited drive down there for a good 35 miles of motorway
#13
Did you find out about the coolant type and concentration HD? It would be well worth doing so and keeping some pre-mixed either in the car or by the front door so you're never stuck between a rock and a jug of tapwater.
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ive got some coolant at home loads of it that cool master blue type, but what mix would you suggest 60 anti freeze 40 water, im going to flush the system soon as im going to fit this zero sports thermostat and one of them metal plates to the radiator just to help keep things cooler any way oh and a reverse scoop oh and how about using that wetter water as well
#18
hi mate has it been over heating since the gasket was changed or has it started since. i had a car before that i changed the gasket on and had the same problem but it turned out that the gasket had benn cut in correctly and some of the coolant jacket holes were covered at the head to block.
#19
mate im afraid its your head gasket its the exact same problem im having its fine when your not in boost but as soon as you get the preassure up in the cylinder it blows an air lock into the water system and then there is 2 much preassure in the water system then the valve in the header cap open the water comes pouring out the over flow .
mine is away getting fixed now costing me £700 to get done
mine is away getting fixed now costing me £700 to get done
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