Oil cooler clogged

Bullnose75 · 29th January 2019, 10:06

Been having lot of trouble getting heater to work in the V6 Tourer. Have replaced heater matrix with brand new one - no better. Have just drained entire cooling system to blow through each pipe and have just found I can't blow through the oil cooler.
Have header tank off for a clean,top heater hose undone at join behind battery. Finger on header tank hose,blow down heater hose that goes to the t piece then down to the oil cooler - go blue in the face but can't blow through oil cooler. Removed other oil cooler pipe from it,still can't blow through. Removed the one i'm trying to blow through and pipe blows through no prob.
So oil cooler must be clogged up inside. Will have to get a new one I guess or do you think if I remove it I might be able to unclog it ? Might bypass it with a piece of copper pipe for now.
Oil cooler being blocked must be the cause of my cold heater as heater return pipe runs through it and if water can't get out of heater,heater can't work !
Paul

SD1too · 29th January 2019, 10:30

Quote:

Originally Posted by Bullnose75

Will have to get a new one I guess or do you think if I remove it I might be able to unclog it ?

Yes I do Paul and what's more, you will discover whether or not the culprit is K-Seal or equivalent which is known to have this effect.

Quote:

Might bypass it with a piece of copper pipe for now.

Errrr ... no! Do it once and do it properly.

Simon

Bullnose75 · 29th January 2019, 18:03

Pic of clogged up insides of oil cooler. No wonder no coolant flowing through heater matrix,it couldn't get out of the other end !

SD1too · 29th January 2019, 18:15

Well done Paul. Have you been able to scoop some of that material out of the cooler to try to identify it?

Simon

COLVERT · 29th January 2019, 18:41

WOW.---And it does have a sort of K-seal look about it too.---

29th January 2019, 10:06	#1
Bullnose75 Avid contributor Rover 75 Tourer 2.0 V6 LPG Join Date: Apr 2018 Location: Colchester Posts: 210 Thanks: 4 Thanked 50 Times in 39 Posts	Oil cooler clogged Been having lot of trouble getting heater to work in the V6 Tourer. Have replaced heater matrix with brand new one - no better. Have just drained entire cooling system to blow through each pipe and have just found I can't blow through the oil cooler. Have header tank off for a clean,top heater hose undone at join behind battery. Finger on header tank hose,blow down heater hose that goes to the t piece then down to the oil cooler - go blue in the face but can't blow through oil cooler. Removed other oil cooler pipe from it,still can't blow through. Removed the one i'm trying to blow through and pipe blows through no prob. So oil cooler must be clogged up inside. Will have to get a new one I guess or do you think if I remove it I might be able to unclog it ? Might bypass it with a piece of copper pipe for now. Oil cooler being blocked must be the cause of my cold heater as heater return pipe runs through it and if water can't get out of heater,heater can't work ! Paul

29th January 2019, 18:15	#4
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,382 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	Well done Paul. Have you been able to scoop some of that material out of the cooler to try to identify it? Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.

29th January 2019, 18:03	#3
Bullnose75 Avid contributor Rover 75 Tourer 2.0 V6 LPG Join Date: Apr 2018 Location: Colchester Posts: 210 Thanks: 4 Thanked 50 Times in 39 Posts	Pic of clogged up insides of oil cooler. No wonder no coolant flowing through heater matrix,it couldn't get out of the other end !

29th January 2019, 18:41	#5
COLVERT This is my second home R75 Saloon. Join Date: Feb 2009 Location: France/or Devon. Posts: 14,003 Thanks: 3,851 Thanked 2,167 Times in 1,816 Posts	WOW.---And it does have a sort of K-seal look about it too.---