Heat exchangers and exhaust fumes

[deano1100]

Hi Guys, Some advice please. Fitted new heat exchangers from JK and now got exhaust fumes in cabin. Checked all connections which seem fine. Have I got Faulty exchangers or could I have fitted incorrectly somehow? Somewhat baffled!

 

[mike202]

possibly engine lid seal not tight? Could exhaust gases be getting back into the engine bay?

 

[admwllms]

I sold my old bus to a garage and drove it for a few miles without the rear seal (just bought it so wanted to keep the seal), and was horrified at how much fumes now came through, was stinging my throat and everything, had no idea it could make such a big difference. So yeah, as mentioned, could be that.

 

[deano1100]

Cheers Guys, It turned out to be the engine seal as it had moved and a couple of small gaps had appeared. The smallest of things allowed so much fumes!