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Forum: Hypermiling

05-11-2011, 05:25 PM

Replies: 41

How to use vacuum gauge for FE?

Views: 11,188

Posted By GasSavers_Erik

Re: How to use vacuum gauge for FE?

It might be a cylinder missing. Purposely pull off a spark plug wire and see if the gauge acts the same way/gets worse.

Forum: Hypermiling

05-04-2011, 04:54 AM

Replies: 41

How to use vacuum gauge for FE?

Views: 11,188

Posted By GasSavers_Erik

Re: How to use vacuum gauge for FE?

My vote is for manifold vacuum advance for fuel economy. The 85-87 Honda CRX HF's were carbed and all used manifold vacuum for advance.

Forum: Hypermiling

05-01-2011, 11:05 AM

Replies: 41

How to use vacuum gauge for FE?

Views: 11,188

Posted By GasSavers_Erik

Re: How to use vacuum gauge for FE?

Yes- the trans modulator vacuum fitting should be a good one to use for the distributor and for your gauge.

Perhaps that funky manifold/ported vacuum mixing valve bled off manifold vacuum through...

Forum: Hypermiling

05-01-2011, 04:56 AM

Replies: 41

How to use vacuum gauge for FE?

Views: 11,188

Posted By GasSavers_Erik

Re: How to use vacuum gauge for FE?

Does the needle drop to zero instantly when you turn the engine off?

Does vacuum drop if you gun the engine while stopped?

The only explanation I can think of is that there is a one way valve...

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