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spewing coolaint out the overflow while normal driving 

 

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 Post subject: spewing coolaint out the overflow while normal driving
Posted: Mon May 23, 2011 11:22 am 
Getting Side Ways
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ef

hi, basically driving around normally 60-70km/h , 1250rpm and when i pull over to go to shops or something its pissing out the overflow, temp gauge hovers around r and m,

Teckaloy gold (red)

???

blocked core?

 

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Crank Assembly balanced, HV oil pump, ACL Trimetal bearings, "1 extra oil clearance taking to around 0.0650-0.0700 on mains and big ends, Moly rings,, Xr6 Cam, POD ( Possibly oversize injectors), Block, Head, Timing cover, belt idler, Alternator,painted in ford light blue

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 Post subject: Re: spewing coolaint out the overflow while normal driving
Posted: Mon May 23, 2011 11:51 am 
Fordmods Junkie
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Could be blocked core. Always good to get it pressure tested. Thermostat could also be stuck closed or not opening properly.

If car is still running as usual, could also be the radiator cap.

 

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 Post subject: Re: spewing coolaint out the overflow while normal driving
Posted: Mon May 23, 2011 9:31 pm 
Getting Side Ways
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Are you getting a lot of pressure in the top radiator hose and has it been leaking elsewhere?
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 Post subject: Re: spewing coolaint out the overflow while normal driving
Posted: Mon May 23, 2011 9:52 pm 
Getting Side Ways
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faulty cap

 

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 Post subject: Re: spewing coolaint out the overflow while normal driving
Posted: Mon May 23, 2011 9:54 pm 
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Mate,from my limited experience could be anything from a head gasket to a radiator cap, probably the easiest and cheapest thing to rule out would be the radiator cap if the car is not boiling and there is no evidence of oily sludge in the expansion tank and it is running at normal temp, if a mate has got a similar car try his cap, otherwise a pressure test wouldnt go astray, cheers

 

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 Post subject: Re: spewing coolaint out the overflow while normal driving
Posted: Mon May 23, 2011 10:17 pm 
Getting Side Ways
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my EB did the same thing. it was the cap

 

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Daily driver: AU2. 5 speed. 19" FG luxos. Full exhaust. Lowered. AU3 XR leather interior, converted to full power windows. 3.45 LSD. IN THE FUTURE: Tickford 6
Weekend driver: EA SVO AU motor. Built BTR. TCE 2800 stall. T76 turbo. Locked diff. On E85. approx 320rwkw. 11.5 @121mph

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 Post subject: Re: spewing coolaint out the overflow while normal driving
Posted: Mon May 23, 2011 10:50 pm 
Getting Side Ways
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Well MY eb did the same thing and it was a blocked radiator.
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 Post subject: Re: spewing coolaint out the overflow while normal driving
Posted: Tue May 24, 2011 12:18 am 
Tyre Shredder
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check & replace your Relays (sometimes a good tap with the screw driver or something kicks them back in)

faulty relays = no fans = water boiling = spewing out the overflow bottle

If fans are working OK & you can hear them then start working your way around the cooling system.

1) Thermostat
2) is water dirty/rusty/brown looking? if so could be really bad cooling system. If thats the case a bottle of radiator flush (Tectalloy HD is what i prefer) pop it in drive for around 1 - 2 hours. come home & flush the system with new water & coolant. (Dont forget to turn the heater on to FULL as well so the water runs through the heater core as well).
3) how old is your radiator? If too old then get it replaced. a faulty radiator can cause you big big problems (like cooking the motor).
4) water pump is it working? if not replace it. still water tends to cook a lot quicker than water thats being circulated.

that should keep you occupied for the better part of the day. if all these dont fix your problem then start looking into the engine. Maybe engine gases heating up water? if thats the case then guess what??? Not so much good news i am afraid.
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 Post subject: Re: spewing coolaint out the overflow while normal driving
Posted: Tue May 24, 2011 2:58 am 
Getting Side Ways
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its the engine i fuley rebuilt, so it has new a thermostat, now that you say, the cap looks a little old

No oil in water/ water in oil

runs perfectally, dont think its boiling

ill grab a new cap and well see what the go is

 

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Crank Assembly balanced, HV oil pump, ACL Trimetal bearings, "1 extra oil clearance taking to around 0.0650-0.0700 on mains and big ends, Moly rings,, Xr6 Cam, POD ( Possibly oversize injectors), Block, Head, Timing cover, belt idler, Alternator,painted in ford light blue

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 Post subject: Re: spewing coolaint out the overflow while normal driving
Posted: Tue May 24, 2011 10:13 pm 
Getting Side Ways
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You rebuilt the engine and didn't get the radiator flushed cleaned repaired
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 Post subject: Re: spewing coolaint out the overflow while normal driving
Posted: Tue May 24, 2011 10:17 pm 
Getting Side Ways
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WILDEB wrote:
faulty cap


i think this might be the winner.

 

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 Post subject: Re: spewing coolaint out the overflow while normal driving
Posted: Wed May 25, 2011 8:29 am 
Getting Side Ways
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from my experiences with RACV etc i think so. when you pull up and turn it off the pressure builds up and if the cap is faulty it'll just open up

 

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Daily driver: AU2. 5 speed. 19" FG luxos. Full exhaust. Lowered. AU3 XR leather interior, converted to full power windows. 3.45 LSD. IN THE FUTURE: Tickford 6
Weekend driver: EA SVO AU motor. Built BTR. TCE 2800 stall. T76 turbo. Locked diff. On E85. approx 320rwkw. 11.5 @121mph

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 Post subject: Re: spewing coolaint out the overflow while normal driving
Posted: Wed May 25, 2011 8:15 pm 
Getting Side Ways
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In 99% of cases it's the cap. I'd change that before looking at anything else.

 

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 Post subject: Re: spewing coolaint out the overflow while normal driving
Posted: Wed May 25, 2011 8:59 pm 
Getting Side Ways
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Alot of the time this happens when people try to retain the 'full' level in the res when cold. Theres a high-low mark for a reason, if it's full when it's cold then it heats up, mix expands & exits through overflow. Paranoid person thinks something is wrong and keeps topping up the res and viscous cycle begins.

Not saying this is you're problem but it happens. & would be the easiest to fix :P

 

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 Post subject: Re: spewing coolaint out the overflow while normal driving
Posted: Wed May 25, 2011 9:42 pm 
Getting Side Ways
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Age: 28

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Joined: 11th Mar 2008

Ride: EA SVO, AU2 Forte

Location: Bendigo
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i fill mine up to the max line when cold. never had a problem with it.

 

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Daily driver: AU2. 5 speed. 19" FG luxos. Full exhaust. Lowered. AU3 XR leather interior, converted to full power windows. 3.45 LSD. IN THE FUTURE: Tickford 6
Weekend driver: EA SVO AU motor. Built BTR. TCE 2800 stall. T76 turbo. Locked diff. On E85. approx 320rwkw. 11.5 @121mph

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