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 9 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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