All Things Mk5 > Mk5 General Area
Crack near top of coolant expansion tank
OllieVRS:
Hey guys,
just noticed a tiny crack near the top of my coolant expansion tank, that has made the coolant level rise, I assume due to a loss in coolant pressure? On a hot engine coolant is fizzling out at the crack.
Last time I checked the coolant level it was barely above minimum, due to a very slow leak somewhere, so it's a suprise to now see it above max now on a cold engine. Engine's not overheating or anything.
Is it safe to keep driving for now? I've got a road trip from Dublin to Belfast so I need to know if it's something to get sorted ASAP or not.
Thanks :smiley:
terrier:
You will more than likely get a "STOP" warning light when the coolant gets lower. Id be tempted to seal it with hot melt or glue for a temp fix then replace when possible.
OllieVRS:
--- Quote from: terrier on February 20, 2023, 05:49:02 pm ---You will more than likely get a "STOP" warning light when the coolant gets lower. Id be tempted to seal it with hot melt or glue for a temp fix then replace when possible.
--- End quote ---
I actually have experienced that heart-attack-inducing message pop up once, when I forgot to turn on the fans after replacing the thermostat. So I'll know it when I see it thanks :happy2:
On a side note, my 06 Octy (registered may 2006, in the UK) doesn't have a display like other 06s which is a bit weird. I just get the flashing and beeping red light of death instead.
Flyingscotsman:
I'd try a temporary fix with epoxy or hard plastic padding. Siphon out some of the coolant so that its below level of crack then carefully clean and dry before applying the epoxy. Best to replace as soon as possible as its under pressure.
GreigC:
Something important like this for the engine…. personally I’d just change the tank. Either get a 2nd hand one or new. I wouldn’t be using glue or something to repair it when it’s under pressure.
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