Engine smokes under upper intake manifold

Asked by Svyatoslav Jul 02, 2014 at 01:50 PM about the 1990 Lincoln Town Car Base

Question type: Maintenance & Repair

Hi, I've purchase Lincoln TC 1990 with 5.0 EFI overall in good condition. Firstly everything
was okay. But then I deside to clean fuel injectors. So after I put everything back there is
smoke appears under upper intake manifold, especially on reverse gear. Maybe problem
in leaking and bad catalytic converters? Thank You

Svyatoslav answered 10 years ago

I've checked them they are clean of oil. It looks like smoke comes from hoses and pipes that attached under upper intake manifold. So when I idle smoke getting worse and it smells and looks like smoke from exhaust, but pcv valve hose is ok.

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Engine smokes under upper intake manifold

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Engine smokes under upper intake manifold

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