1996 Cherokee Correct vacuum pressue

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Feb 4, 2014 | 02:17 PM

FR&FTHR

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Joined: May 2011

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Model: Cherokee

1996 Cherokee Correct vacuum pressue

I'm installing a new wildwood master cylinder and proportioning valve to complete my drum to disc conversion.

Need to know what is the correct engine vacuum amount. I have 16.5".
Is it suppose to be 18-20" ?

Feb 4, 2014 | 02:33 PM

DFlintstone

CF Veteran

Joined: Aug 2011

Posts: 10,489

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From: Nor-Cal Coast

Year: 90,84

Model: Cherokee

Engine: 4.0,2.5

I have 16.5 as well. A tad low I think, but with 277K I guess it could be worse. I'd hazard a guess you are OK.

Feb 4, 2014 | 03:13 PM

FR&FTHR

Thread Starter

Newbie

Joined: May 2011

Posts: 14

Likes: 0

Model: Cherokee

I have 155K on this motor... that could be the reason

Feb 4, 2014 | 03:22 PM

DFlintstone

CF Veteran

Joined: Aug 2011

Posts: 10,489

Likes: 24

From: Nor-Cal Coast

Year: 90,84

Model: Cherokee

Engine: 4.0,2.5

Yea. I'm no expert but I believe things like worn rings and intake valve guides lowers vacuum.

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