A stock 12A should have a idle vacuum of...

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09-09-07 | 02:01 AM

Richard Miller

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Damn, it did start!

Joined: Feb 2001

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From: washington

A stock 12A should have a idle vacuum of...

what? I got around 10 in Hg with a five degree deflection. both ways. Should the vacuum be steady?

thank you

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09-09-07 | 08:20 AM

REVHED

Hunting Skylines

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From: Brisbane, Queensland, Australia.

That's pretty low.

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09-09-07 | 11:46 AM

j9fd3s

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From: https://www2.mazda.com/en/100th/

it may make a difference where you put the vacuum line. i did some testing, with the vacuum guage teed into the distributor vacuum lines.

i was seeing 15ish, steady.

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09-09-07 | 01:02 PM

Richard Miller

Thread Starter

Damn, it did start!

Joined: Feb 2001

Posts: 2,714

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From: washington

so is off the dizzy vac lines an accepted place? and what does low vacuum mean. other than a leak.

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09-09-07 | 01:21 PM

Jeff20B

Lapping = Fapping

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From: Near Seattle

It could mean weak springs or worn seals. Maybe chrome flaking.

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