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EA82 carby motor in brothers car seems to be running hot.. goes just under the red, and goes down, and up and down and up slowly..
it is running hotter than it should be.. there is no signs of blown head gaskets, changed thermostat, and kept an eye on everything but it still runs hot and up and down in the temperature range.
Thermo fans are all woking well and are kicking in at appropriate temp's so what to look at now?

Ordered a cooler thermostat for it this week...

any help would be good

wrx_nut

I think it is a good move ordering the cooler thermostat.
Let us know how that worked.

Kev

Could be low on cooling fluid. Open the radiator when warm (not hot or you'll get scalded) and check (the overflow bottle is not a good gauge).

yep checked the radiator..she's full..
im thinking maybe the radiator is blocked?
any suggestions?

Okay, to do fault finding if the rad's core is blocked/or failing.

Ensure the engine is cold before warming up, Remove any type of fans on the radiator (you'll be fine without them for little while).

Start-up the engine and run it for a while while inspecting & feeling all over the radiator bottom, top, middle, centre left right etc.. if you can feel "cold" patch and other area is "hot".

I think the L Series had vertical core radiators (been ages since I last touched it), you will feel a couple or a few lines that is cold and other areas is hot, its a sign of blocked core in these cores.

If you're still unsure, take it to RadReps at the end of Pako (Pakington Street, Newtown) Barwon River end off Fynes Street, these guys will be able to help you.

Also, its a good idea to remove the thermostat as well.
Cheers
AP

i have a spare radiator in my parts L-wagon.. might put that in and give it a run and see how it goes... whats the go with drilling holes through an old thermostat? does that work as like a cooler one?

cheers

wrx_nut

You can, if you wanna go thru all the effort changing it over. Reverse flash it to get all the junk out of the rad. Give it a go.. thermo... drilling a hole... i would'nt muck around with it. Simply get a new one for what its worth.

Off Topic - do u go to the otways a lot thru the bush?
Cheers
AP

got the cooler thermostat ordered.. taking the radiator out isnt that hard is it?

yeah always mucking around out the back of anglsea and the otways in either a subie or a landcruiser... GREAT FUN when its wet!

wrx_nut wrote:got the cooler thermostat ordered.. taking the radiator out isnt that hard is it?

yeah always mucking around out the back of anglsea and the otways in either a subie or a landcruiser... GREAT FUN when its wet!

Hehe there is a few places there where there is clay + wet (one of these roads back of Anglesea).. awww its fun! Did that with the Camira and my Liberty, haven't been there for ages.

Anyway back to topic - How hard? Shouldn't be, just undo the pipes, bolts and disconnect the fans (if any) and pull it out + change it over.

Get some pre-mix coolant but use normal water for testing purposes before coolant.

Geoff at Bursons in Mercer St, Geelong will give you a good trades price for pre-mix coolant I think $18? I can't remember
Cheers
AP

yerp.... with the reverse flush you get the hose and put it in the bottom of the radiator and let it all flow out the top dont ??? and wash out the vents (reverse)

wrx_nut wrote:yerp.... with the reverse flush you get the hose and put it in the bottom of the radiator and let it all flow out the top dont ??? and wash out the vents (reverse)

Yup..

I normall do reverse then forward and reverse flash till its pure clean.

Cheers
AP

no worries... might give that a go and when the cooler thermostat comes put that in and see how it goes

thanks for your help

wrx_nut wrote:no worries... might give that a go and when the cooler thermostat comes put that in and see how it goes

thanks for your help

Pleasure!
If I see you around there I'll give ya a yell!
Cheers
AP

no worries... what do you drive? are you local?

wrx_nut wrote:no worries... what do you drive? are you local?

Grew up Geelong till this year moved to Melbourne this year. Was regularly Torquay/Angelsea/Lorne/Otways/Beech Forrest etc

I have 1995 Liberty "Rallye" 5MT AWD, LSD.

Hunting for an 1800 L Series 4WD and will do mods & 4WD off road reasons.
Cheers
AP

Ok heres the info... Took radiator out and replaced with another one i had in the shed. Temperature sat fine where it should sit. Took it for a drive (a good long one) was all good and the temperature didnt move off where it should be. The next day---- took it for another test drive and the temperature came up, right up to the hot! pulled over and it had blown a little water hose underneath the carby. So got it home and replaced the hose with a new one and also fitted a cooler thermostat (170 degrees).
Took it for another test drive and it went like a dream! temp was sitting fine and where it should be.

But--- This is now the 3rd hose it has blown
1st hose was big heater hose
2nd hose was a little one on the left side of carby
3rd hose was another little one on the right side of the carby.

Why is it blowing the hoses? the only reason i can think of is that the hoses were old and brittle and they did get pretty hot a few times when the old radiator was in so they cracked?

any suggestions?

Car is running 100% now
thanks
wrx_nut

I would believe that it gotten hot and became brittle. Happened to me a few times.

Glad that you got fixed/sorted out.. Knew it was Radiator problem.
Cheers
AP

yep.. thanks for your help aswell. Now that the hoses are replaced with new ones there shouldnt be any more breakage drama's