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View Full Version : Will EGR blocking plate fix EGR Cooler leak?



Gazzafish
7th November 2014, 02:18 PM
My 2005 TDV6 is losing a very small amount of coolant and I can see no traces of it anywhere. I am expecting a leaking EGR Cooler.

From what I understand, The EGR cooler is a heat exchanger and has 2 separate areas. One area is where the exhaust gas flows in one end, along the cooler and out the other end into the EGR valve. Also inside the cooler, is a complete separate 'cooling' chamber which has coolant flowing through it which is used to cool these exhaust gases before they enter the EGR valve.

So, in theory, If I put an EGR blanking plate on both ends of the exhaust flow. I.e. From exhaust into cooler and then a second plate between cooler and EGR valve, If the EGR cooler is leaking coolant, it will simply fill up the cooler chamber completely and I wouldn't lose any more coolant?

or have I got this totally wrong :D (highly likely)

Nomad9
8th November 2014, 09:32 AM
Hi Gazzafish,
Check the "plastic" cooling water outlet housing on top of the engine at the front where the top hose connects. The water leaks into the centre of the V and evaporates with the heat. You usually don't find it until the leak is so bad that it fills the V about 2 litres of coolant and you get evidence of a leak from dripping around the front of the gearbox.
The housing is relatively cheap and easy to fit.
The two clips on the EGR pipes are a bit of a bugger so buy two new ones when you buy the outlet housing. Bit of a bugger this I have a spare one in my shed, you are in Melbourne.
I have had three crack and start to leak. Small coolant loss over a long period of time.
Never had a leaking EGR cooler, my advice stay well away from them, a living nightmare especially if you decide to replace them. That's my opinion, I have replaced one for a different reason than a coolant leak.,

101RRS
8th November 2014, 09:52 AM
I would not have thought blanking the EGRs would stop the coolant leak as it would still be going into the exhaust and then out the exhaust pipe.