ZUKIWORLD Online | Suzuki 4x4 Editorial and Forum

ZUKIWORLD Discussion Forum => Suzuki 4x4 Forum => Topic started by: 90Stomper on March 27, 2004, 12:18:37 PM

Title: vacuum advance
Post by: 90Stomper on March 27, 2004, 12:18:37 PM: 90 tracker: in pulling the motor and testing everything i tested the vacuum on the dis vacuum advance. it moves just fine but will not hold vacuum. i asked around and was told that some are suposed to and some are not. anyone know if my advance unit is good or bad before i spend $68 for a new one, or $145 for a whole rebuild dis? ???
Title: Re: vacuum advance
Post by: wildgoody on March 27, 2004, 03:38:36 PM: my 89' didn't hold vacuum, so I got one that did
thinking the turbo blew it out, but now the new one
does the same thing ??? I just live with it.
Title: Re: vacuum advance
Post by: jerryp58 on March 28, 2004, 12:39:02 AM: I'll try to dig a little deeper, but FWIW, a quick glance at the shop manual test of the vac advance only talked about "smoothness" of motion, not whether it would hold vacuum or not.
Title: Re: vacuum advance
Post by: 90Stomper on March 28, 2004, 02:27:14 AM: Quote
a quick glance at the shop manual test of the vac advance only talked about "smoothness" of motion, not whether it would hold vacuum or not

ya, that is why i posted this! thought that was strange :-/

thanks, guess maybe its normal
Title: Re: vacuum advance
Post by: alterego158 on May 08, 2006, 12:56:51 PM: I have an '89 sidekick and the vacuum advance unit does not hold vacuum.

It also sort of clicks from one position to the next. Is this the opposite of what's described as "smooth" in the manual or is this acceptable?
Title: Re: vacuum advance
Post by: alterego158 on May 11, 2006, 03:13:34 PM: Quote from: alterego158 on May 08, 2006, 12:56:51 PM
I have an '89 sidekick and the vacuum advance unit does not hold vacuum.

It also sort of clicks from one position to the next. Is this the opposite of what's described as "smooth" in the manual or is this acceptable?

I'm an idiot. It was clicking in time with me pumping the vacuum pump.

Checked out a few vacuum advance units at the junkyard: none of them seemed to hold vacuum. So that answers that.
Title: Re: vacuum advance
Post by: darnold87 on May 11, 2006, 03:35:59 PM: I'll check mine when I get home. It's an 89 1600 8-valve in a sami. All I know is that GM HEI distributors are DEFINITELY made to hold a vaccuum.