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Re: [GMCnet] I love my Howell EFI [message #315123 is a reply to message #315119] Sun, 26 March 2017 07:59 Go to previous message
Ken Burton is currently offline  Ken Burton   United States
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma:
Senior Member
Also check the steel tube running on the passenger side of the intake manifold from front to rear for an obstruction. They occasionally get clogged up and then there is no vacuum at the modulator.

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
 
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