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1991 Chevy Lumina

Tiny
HSSCHWARTZ
  • MEMBER
  • 1991 CHEVROLET LUMINA
1991 Chevy Lumina 6 cyl 150000 miles

My mechanic cannot figure out why there is no vacuum in the exhaust manifold. I don't understand the problem, he may have said or meant intake manifold. Problem started with regulator that is associated with fuel pressure.
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Friday, September 5th, 2008 AT 7:04 PM

1 Reply

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
There is vaccum in the exhaust manifold, and some in the intake also.

You need to get back to me as what you need first of all. Also a exhaust doesnt really need vaccum. Helps at highspeed but the amount youll notice with a stock vehicle, very little.
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Friday, September 5th, 2008 AT 8:49 PM

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