Zr1 secondary pump

[viper107]

good to know on that one!

[viper107]

Took advice and pulled vacuum line on driver's side plenum and capped off,pump still runs constantly. Do I need a check valve?

[viper107]

Nevermind got it backwards,I'm pulling the plenum,last was 16 years ago,lol

[Paul Workman]

Originally Posted by viper107

Took advice and pulled vacuum line on driver's side plenum and capped off,pump still runs constantly. Do I need a check valve?

Maybe I'm confused (something new!), but if you held you thumb over the line to the pump, and it continues to run...the issue is between your thumb and the pump itself.

If you determine it to be under the plenum, a good visual inspection may tell you a lot. But, an inexpensive hand vacuum pump comes in handy for troubleshooting/testing.

[viper107]

thx brother!

[Ccmano]

Originally Posted by Paul Workman

Maybe I'm confused (something new!), but if you held you thumb over the line to the pump, and it continues to run...the issue is between your thumb and the pump itself.

If you determine it to be under the plenum, a good visual inspection may tell you a lot. But, an inexpensive hand vacuum pump comes in handy for troubleshooting/testing.

Paul, its pretty simple. If you put your thumb over the line and the pump stops its the vacuum check valve. If the pump does not stop there a leak to atmosphere somewhere between your thumb and the pump.
H

[Paul Workman]

Originally Posted by Ccmano

Paul, its pretty simple. If you put your thumb over the line and the pump stops its the vacuum check valve. If the pump does not stop there a leak to atmosphere somewhere between your thumb and the pump.
H

Uh, yup!... I know dat. My cofoozion was more to do with the post question.

[Ccmano]

Originally Posted by Paul Workman

Uh, yup!... I know dat. My cofoozion was more to do with the post question.

Sorry Paul, misunderstood you comment.
H