Mg ztt cdti black smoke and hose blows off
 

My car was running great I was doing over 80 Mph than my car starting making a funny noise . and then black smoke out of exhaust on hard acceleration .when pulled into service a notice the the top rubber hose from intercooler and inlet manifold EGR hand come off .
I put it back on with the jubilee clip and ever thing was ok but after few miles it had come off again with more heavy black smoke

Can some one tell me why it blowing off . i have feeling back pressure from some where.

Could be as simple as a porous hose, a poor jubilee clip etc.

Same thing happened to me when I collected my caravan.

The intercooler hose has to be really tight. I found using a screwdriver wasn’t good enough. Better to use a small socket on the hex of of the Jubilee, also clean all oil residue off the hose helps.

Hi Howard.
How old is the intercooler hose, if swelled change it also the O-rings and only use Viton ones, use a new jubilee clip, another good idea would be to clean your EGR and Manifold along with the MAP sensor.

At the moment it sound like the jubilee clip is faulty they can at a certain point just not tighten anymore, even more so if its the wrong size.

OK , thanks I will try those things , I did buy pocket knife with screw drive bit on end and tighten hose ,but came off again .Also it dose look very oily inside and looks like new hose , If you google my reg KN53PZM ,some Russian web site took a picture of the car , I dont know why but does look a well looked after car ,does anybody recognise it .

HI All I have just took off the Egr valve and looks like it been fitted with a modified blank one as the nothing in it and the vac pipe looks like it been filled with resign there no valve in it and hole for has been blanked off .:getmecoat:

Some egr bypass pipes don’t have a ridge on the end, this makes it difficult to secure the intercooler hose successfully.


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Hi Howard.
What type is it can you add a photo, also do not dismiss the intercooler O-rings.

Hi I cleaned pcv filter bypass valve it near the injectors , been for 30 mile ride and everything is fine , Thanks for all your Help

Well done, tie to enjoy the car now :bowdown: