93 efi tb42 patrol leaking coolant out the over flow bottle any ideas why?

[bfcake]

hey guys im new to the forum from the bendigo squadron. i was wondering if any one had any ideas to why this is happening ive had the radiator cleaned and recod new radiator cap and its still emptying itself via overflow bottle....... any ideas.....??????

[shorty lover]

Is that the rb30 donk??? Slightley blown head???? try pk combustion test

[rkinsey]

Does it happen if you run the unit without the Thermostat? If it does it may indicate a warped head which produces blowback or pressure buildup in the system and the only place of least resistance is the overflow valve/pipe.

Have the system preasure tested at least.

Cheers,

Rob

[bfcake]

4.2ltr efi.... will try a presure test then i hope its not the head but wouldnt suprise me ive had the patrol for 4months the guy before me got the head done maybe a dodgey job.....
thanks for the replies guys.

[rkinsey]

4.2ltr efi.... will try a presure test then i hope its not the head but wouldnt suprise me ive had the patrol for 4months the guy before me got the head done maybe a dodgey job.....

Its certainly possible to have a doggy job done. I had a aloy head replaced on a magna a few years ago and they had just welded a crack up which failed 6 months later and deposited oil throughout the cooling system not top mention the damage to the head itself.

I ended up losing that magna because of the doggy job.


If you have a stuffed aloy head, replace it, dont get it "repaired"

Cheers,

Rob

[AB]

hey guys im new to the forum from the bendigo squadron. i was wondering if any one had any ideas to why this is happening ive had the radiator cleaned and recod new radiator cap and its still emptying itself via overflow bottle....... any ideas.....??????

Just checking, Is it running hot?

Is there a little bit coming out or is it literally "emptying itself" like you mentioned.

[bfcake]

i took the car down to melbourne saturday it sat on a quarter all the way down then started to get hot thru the city stoped at a mates house for a bit let it cool down then refilled the raditor bout 3ltrs of water. drove back to bendigo it was fine used about a litre back..

[the evil twin]

i took the car down to melbourne saturday it sat on a quarter all the way down then started to get hot thru the city stoped at a mates house for a bit let it cool down then refilled the raditor bout 3ltrs of water. drove back to bendigo it was fine used about a litre back..

Thats not fine man... thats about 999 millilitres too much. The EFI's will use a small amount of coolant but only over thousands of K's and even then not a Litre.

I reckon you still have Cylinder Head issues

[bfcake]

by fine i was meaning it didnt get hot... im guessing its the head then by everyones posts

[89GQ]

Can a stuffed radiator cap do this? Mine was preasurising in the overflow years ago ! Got a new rad cap and fixed it! Cheap option to try first!!