vacuum while decelerating

[lil corb]

hey on my Stewart-Warner boost gauge, it reads idle vac at 18hg-20hg, which would be normal. When I decelerate it stays at 20hg and not at 23-25hg. I read in the archives that if it the vacuum is not around there during deceleration that something is wrong with motor. Is this right? any opinions on what could be wrong? Car pulls fine, runs a little rich and idle surges because stock bov is not recirculating. ( people I bought car from)

thanks

 

[RoasT BeeF]

If you are getting 20 at idle there is nothing wrong with your car.

Does it stay at 20 all the time though, like even when you are under boost? If thats the case your guage may not be hooked up right.

 

[lil corb]

If you are getting 20 at idle there is nothing wrong with your car.

Does it stay at 20 all the time though, like even when you are under boost? If thats the case your guage may not be hooked up right.

It stays between 18-20hg at idle and during boost it hits the correct boost setting which is 13psi. but during deceleration it'll only go to 20hg or 21hg. Is that normal? I'm 100% I hooked it up right. Used the RRE installation instructions.

thanks

 

[Mist3r Spool]

It stays between 18-20hg at idle and during boost it hits the correct boost setting which is 13psi. but during deceleration it'll only go to 20hg or 21hg. Is that normal? I'm 100% I hooked it up right. Used the RRE installation instructions.

thanks

First of all, spell check is your friend. Secondly, you're fine. You should get around 20"-23" of vacuum when your engine is braking (or de-accelerating as you call it). When at idle, you should get about 18"-20" of vacuum but when the engine is braking the vacuum is a bit stronger thus the 20"-23" or so.

 

[dsmsRgh3y]

First of all, spell check is your friend. Secondly, you're fine. You should get around 20"-23" of vacuum when your engine is braking (or de-accelerating as you call it). When at idle, you should get about 18"-20" of vacuum but when the engine is braking the vacuum is a bit stronger thus the 20"-23" or so.

What did he spell wrong?

and Mist3r Spool is absolutely correct you're fine

 

[Mist3r Spool]

What did he spell wrong?

and Mist3r Spool is absolutely correct you're fine

I just came back from a party, maybe I had too much to drink. But still, spell check is your friend!

 

[lil corb]

, thanks guys for info.

 

[prophecy7115]

I get 30hg in deceleration. and 18-20 in idle