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Author Topic: Question about the Shaker  (Read 379 times)

Offline Shelby1966

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Question about the Shaker
« on: November 15, 2022, 11:13:44 AM »
Hi..1970 Mustang Mach 1 Ram Air 428
Please look at the attached 2 pics is the flapper in correct position(open) without vacuum attached or the car started.
When I attach vacuum with the car running at idle it immediately shuts(closed position).
When I engaged the 4 barrel it slams in the open position.please advise

TY
Rick Poling
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Offline alanmac

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Re: Question about the Shaker
« Reply #1 on: November 15, 2022, 12:59:55 PM »
My shaker works the same.  With WOT it is open all the way (supposedly).  When you shut the engine off its slaps open.
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1970 Mustang Mach 1
351W Shaker Hood
Built at Metuchen
1 of 186 with these paint/trim codes
Build Date: October 7, 1969
0T1190xx
Dealer: Maguires Garage Inc. Duncannon PA

Offline rockhouse66

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Re: Question about the Shaker
« Reply #2 on: November 15, 2022, 02:00:12 PM »
Right.  Normally open and engine vacuum closes it.  WOT is low vacuum so it opens.
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Jim
'66 GT FB

Offline Shelby1966

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Re: Question about the Shaker
« Reply #3 on: November 15, 2022, 02:19:36 PM »
Great help

Thank you Alan and The Rock.

Appreciate

Rick Poling
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