GOLFMK8
GOLFMK7
GOLFMK6
GOLFMKV

Coolant on outside of expansion tank

J

Jengli1

Passed Driver's Ed
Location
West Midlands
I’ve noticed a considerable drop in my coolant, I had coolant on the outside of the expansion tank..any1 have any ideas what the problem could be?
 
Finglonga

Finglonga

Drag Racing Champion
Location
Stafford, UK, Earth, Solar System.
As above or cap was loose.
 
J

Jengli1

Passed Driver's Ed
Location
West Midlands
Cap is definitely on tight. I’ve been to Volkswagen on numerous occasions, first they said water pump, paid £500 and still leaked. Took it back and they then said egr cooler and had to pay £1000. Just checked and coolant still going down. Could the problem be the actual cap?
 
The Fed

The Fed

Old Guys Rule
Location
Florida
I'd call VW of UK and complain. I realize you probably have parts there we don't have here in the States but it sounds like you're getting screwed by your dealer. Tell them you want a refund and for the work already done and want to go to another dealer.
 
D

Davyc

New member
Location
Fife
Jengli have a read back of your thread from July about coolant!Its head gasket failure,same as I had by the sound of it!Im in the motor trade,we had everyone look at the car,VW,2 specialists,no one had been able to work out what was causing the problem.After a couple of months trying,we took the head off and the gasket had blown between cylinder 2 and the water jacket.
 
The Fed

The Fed

Old Guys Rule
Location
Florida
Davyc said:
Jengli have a read back of your thread from July about coolant!Its head gasket failure,same as I had by the sound of it!Im in the motor trade,we had everyone look at the car,VW,2 specialists,no one had been able to work out what was causing the problem.After a couple of months trying,we took the head off and the gasket had blown between cylinder 2 and the water jacket.
Click to expand...

So it created so much pressure in the system it cracked the tank, or is there a relief valve built into the cap?

On another note, I noticed 2018 US R's have a different cap on the coolant bottle than my 2016.
 
D

Davyc

New member
Location
Fife
It wont have cracked the tank,we replaced the tank and 2 caps while testing.There is an overflow down the back that the fluid comes out of.Mine was the 1st gasket failure anyone had heard of on the new CUNA engine.
 
J

Jengli1

Passed Driver's Ed
Location
West Midlands
I’ve got no symptoms for a failing gasket, and I’m pretty sure it’s coming out of the top of expansion tank. The amount of times it’s been to vw I’d be disappointed if they hadn’t already checked the gaskets
 
D

Davyc

New member
Location
Fife
You HAVE got symptoms of a failed head gasket!Pressure in the header tank forcing coolant out of the over flow!My car was an early 2014 running DTUK tuning system from new,Iv been in the motor trade for 26 years.If you have the same symptoms as I did it’s your head gasket.No VW dealer has X-Ray vision to look inside your engine,the only option it take the head off!
Or you could keep throwing hundreds of pounds at it changing all the ancillaries(I did that too!)
 
You must log in or register to reply here.
Top