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Old 09-03-2023, 11:22 PM   #8
AlanM
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Join Date: Dec 2022
Posts: 102
Default Re: MC Mondeo. Diesel fumes

Quote:
Originally Posted by FrancisW View Post
Hi all, just lately car has been getting fumey, especially if sitting, idling and coming to a stop after a Highway run. No smoke. No loss of power, idle a bit rough at times.
I have had vehicle serviced, new filters, including cabin filter. Also had a forced regen.
Exhaust is ok according to mechanic.
Where else do I look.
Could it be injector seals. Cheers
It could be one or more leaking injector seals. It's easy to check, just take the plastic cover off (3 × 8mm hex head screws). It should be nice and clean under there.
If a seal is leaking it coats everything with a light film of diesel which burns off as the engine gets hot, and ends up like bitumen.

Be very careful tightening the injector clamps, they look strong but they're very brittle.
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