Go Back   Honda-Tech > Honda and Acura Technical Forums > Tech/Misc
Sign in using an external account
Register Forgot Password?
Search


Welcome to Honda-Tech!
Welcome to Honda-Tech.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Honda-Tech community today!


Reply
 
 
 
submit to reddit
 
LinkBack Thread Tools Search this Thread
Old 10-22-2003, 07:51 AM   #1
Honda-Tech Member
Garage is empty, add now
 
whatVTEC's Avatar
 
Join Date: Jul 2002
Location: Salinas, CA, USA
Posts: 2,445
iTrader Rating: (0)
Send a message via AIM to whatVTEC
Default Engine has low vacuum

My engine has low vacuum, how can I fix it?
Setup: B18b with Crower 404 cams, JG/Edelbrock intake manifold, Holley T/B
Je pistons, Eagle Rods, Crower Valvetrain, etc.
Thanks for any feedback.
__________________
Messy Garage with no car in it
PM me for OEM Honda parts
whatVTEC is offline   Reply With Quote
Old 10-22-2003, 10:05 AM   #2
Honda-Tech Member
Garage is empty, add now
 
whatVTEC's Avatar
 
Join Date: Jul 2002
Location: Salinas, CA, USA
Posts: 2,445
iTrader Rating: (0)
Send a message via AIM to whatVTEC
Default Re: Engine has low vacuum (whatVTEC)

^bump^ Click the image to open in full size.
__________________
Messy Garage with no car in it
PM me for OEM Honda parts
whatVTEC is offline   Reply With Quote
Old 10-22-2003, 10:28 AM   #3
Mad Scientist
Garage is empty, add now
 
mmuller's Avatar
 
Join Date: Nov 2002
Location: tallafizzy, FL state
Posts: 5,827
iTrader Rating: (0)
Default Re: Engine has low vacuum (whatVTEC)

whats the vaccum at?if its just a little low its ok cause of the cams
__________________
-2290 DC2= e85 powered -DB2
EFI 101 -- PGMFI.ORG-- crome--
have a question about ducati's? ducati factory trained
mmuller is offline   Reply With Quote
Old 10-22-2003, 11:22 AM   #4
Honda-Tech Member
Garage is empty, add now
 
whatVTEC's Avatar
 
Join Date: Jul 2002
Location: Salinas, CA, USA
Posts: 2,445
iTrader Rating: (0)
Send a message via AIM to whatVTEC
Default Re: Engine has low vacuum (mmuller)

I don't remember what it was, but I had a technician at my work look at it and he said he was surprised it was even running. My car doesn't idle for ****. I don't know if it's related to the low vacuum.
__________________
Messy Garage with no car in it
PM me for OEM Honda parts
whatVTEC is offline   Reply With Quote
Old 10-22-2003, 11:33 AM   #5
Mad Scientist
Garage is empty, add now
 
mmuller's Avatar
 
Join Date: Nov 2002
Location: tallafizzy, FL state
Posts: 5,827
iTrader Rating: (0)
Default Re: Engine has low vacuum (whatVTEC)

idle like?
those cams are pretty big so it will have a lumpy idle and vaccum its gonna be low at idle.
__________________
-2290 DC2= e85 powered -DB2
EFI 101 -- PGMFI.ORG-- crome--
have a question about ducati's? ducati factory trained
mmuller is offline   Reply With Quote
Old 10-22-2003, 11:37 AM   #6
Honda-Tech Member
Garage is empty, add now
 
JDogg's Avatar
 
Join Date: Sep 2003
Location: Raleigh, NC
Posts: 5,070
iTrader Rating: (0)
Default Re: Engine has low vacuum (whatVTEC)

has the engine ever ran with the propervacum? usually low vacuum at idle is caused by severly retarded ign timing or cam timing
JDogg is offline   Reply With Quote
Old 10-22-2003, 12:09 PM   #7
Honda-Tech Member
Garage is empty, add now
 
rsbad454's Avatar
 
Join Date: Jul 2003
Location: Nor, Cal, USA
Posts: 652
iTrader Rating: (0)
Send a message via AIM to rsbad454 Send a message via Yahoo to rsbad454
Default Re: Engine has low vacuum (JDogg)

its called bigger cams.........they dont produce a good vacuum signal.......same goes with my big block chevy.......i have a lopey cam and it only makes like 5inches of vacuum...........
__________________
1989 G1teg
JDM B16A

1988 Hatch
In Progress
rsbad454 is offline   Reply With Quote
Old 10-22-2003, 01:25 PM   #8
Honda-Tech Member
Garage is empty, add now
 
whatVTEC's Avatar
 
Join Date: Jul 2002
Location: Salinas, CA, USA
Posts: 2,445
iTrader Rating: (0)
Send a message via AIM to whatVTEC
Default Re: Engine has low vacuum (rsbad454)

Well when the car wants to idle it's lumpy which is normal. But the car very rarely idles. The timing stock. It's not advanced or retarded. Is there something I could add to make more vacuum?
__________________
Messy Garage with no car in it
PM me for OEM Honda parts
whatVTEC is offline   Reply With Quote
Old 10-22-2003, 02:46 PM   #9
Garage is empty, add now
 
WuRKD b16's Avatar
 
Join Date: Sep 2003
Location: NYC, NY, usa
Posts: 137
iTrader Rating: (0)
Default Re: Engine has low vacuum (whatVTEC)

how do u tell if ur car is making low vacuum?
WuRKD b16 is offline   Reply With Quote
Old 10-22-2003, 03:42 PM   #10
Honda-Tech Member
Garage is empty, add now
 
whatVTEC's Avatar
 
Join Date: Jul 2002
Location: Salinas, CA, USA
Posts: 2,445
iTrader Rating: (0)
Send a message via AIM to whatVTEC
Default Re: Engine has low vacuum (WuRKD b16)

Hooked it up to a vacuum gauge
__________________
Messy Garage with no car in it
PM me for OEM Honda parts
whatVTEC is offline   Reply With Quote
Old 10-22-2003, 06:14 PM   #11
Mad Scientist
Garage is empty, add now
 
mmuller's Avatar
 
Join Date: Nov 2002
Location: tallafizzy, FL state
Posts: 5,827
iTrader Rating: (0)
Default Re: Engine has low vacuum (whatVTEC)

you could make it have more vaccum by putting the stock cams back on Click the image to open in full size.
__________________
-2290 DC2= e85 powered -DB2
EFI 101 -- PGMFI.ORG-- crome--
have a question about ducati's? ducati factory trained
mmuller is offline   Reply With Quote
Old 10-23-2003, 03:01 AM   #12
D Tranny Guru
Garage is empty, add now
 
Mista Bone's Avatar
 
Join Date: Oct 2001
Location: Cincity, OH, USA
Posts: 8,660
iTrader Rating: (0)
Send a message via AIM to Mista Bone
Default Re: Engine has low vacuum (whatVTEC)

your running 404 cams and want vacuum??????

"Stage 3 - 3/4 Race, recommended for mostly strip. Requires 84162 kit and ECU mod. 1100 to 8200+ rpm, lope at idle."

3/4 RACE??? Who here knows THAT terminology??????
__________________
"D" Tranny Guru
Mista Bone is offline   Reply With Quote
Old 10-23-2003, 05:10 AM   #13
Honda-Tech Member
Garage is empty, add now
 
rsbad454's Avatar
 
Join Date: Jul 2003
Location: Nor, Cal, USA
Posts: 652
iTrader Rating: (0)
Send a message via AIM to rsbad454 Send a message via Yahoo to rsbad454
Default Re: Engine has low vacuum (Mista Bone)

you wont make more vacuum unless you install stock cams........you can save vacuum with a resevoir like used for V8 street machines with power brakes. Yes, ECU's usually like to see a better chip to run with the bigger cams. these arent like the 2 in 1 cams for Vtec motors with small and bif lobes......only thing i can suggest is to increase the idle with the screw. Call the cam manufacturer and see if these are suppose to cause this type od idle.
__________________
1989 G1teg
JDM B16A

1988 Hatch
In Progress
rsbad454 is offline   Reply With Quote
Old 10-23-2003, 06:59 AM   #14
Honda-Tech Member
Garage is empty, add now
 
whatVTEC's Avatar
 
Join Date: Jul 2002
Location: Salinas, CA, USA
Posts: 2,445
iTrader Rating: (0)
Send a message via AIM to whatVTEC
Default Re: Engine has low vacuum (Mista Bone)

The thing is that I was under the impression that my car would still idle with these cams...just lumpy. But my car don't idle at all.
__________________
Messy Garage with no car in it
PM me for OEM Honda parts
whatVTEC is offline   Reply With Quote
Old 10-23-2003, 09:06 AM   #15
Honda-Tech Member
Garage is empty, add now
 
rsbad454's Avatar
 
Join Date: Jul 2003
Location: Nor, Cal, USA
Posts: 652
iTrader Rating: (0)
Send a message via AIM to rsbad454 Send a message via Yahoo to rsbad454
Default Re: Engine has low vacuum (whatVTEC)

well then you need to check for vacuum leaks, and do you have cels?
__________________
1989 G1teg
JDM B16A

1988 Hatch
In Progress
rsbad454 is offline   Reply With Quote
Old 10-23-2003, 12:30 PM   #16
Garage is empty, add now
 
mathusala's Avatar
 
Join Date: Sep 2003
Location: nor, cal, usa
Posts: 223
iTrader Rating: (0)
Default Re: Engine has low vacuum (whatVTEC)

Quote:
Originally Posted by whatVTEC
The thing is that I was under the impression that my car would still idle with these cams...just lumpy. But my car don't idle at all.
'idle' is relative - crank it up. probably won't smooth out until the advance catches up a bit and you've got some vacuum (12-1300 rpms). ought to be real nice at the other end.
__________________
a b16 just sounds better...
mathusala is offline   Reply With Quote
Old 10-23-2003, 03:14 PM   #17
Honda-Tech Member
Garage is empty, add now
 
whatVTEC's Avatar
 
Join Date: Jul 2002
Location: Salinas, CA, USA
Posts: 2,445
iTrader Rating: (0)
Send a message via AIM to whatVTEC
Default Re: Engine has low vacuum (rsbad454)

I know I gotta vacuum leak somewhere which isn't helping, but there is no CEL
__________________
Messy Garage with no car in it
PM me for OEM Honda parts
whatVTEC is offline   Reply With Quote
 
 
 
submit to reddit
Reply

Tags
b16, build, cams, cbr, engine, honda, idle, low, motor, tech, vaccum, vacuum

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 03:44 PM.



2008 Copyright, InternetBrands Inc.
Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.

Honda and the Honda marquee are registered trademarks of the American Honda Motor Company, Inc. Neither American Honda Motor Company nor its subsidiaries or affiliates shall bear any responsibility for Honda-Tech.com content, comments, or advertising. Honda-Tech.com is not affiliated with American Honda Motor Company in any way. American Honda Motor Company does not sponsor, support, or endorse Honda-Tech.com in any way. Copyright/trademark/sales mark infringements are not intended or implied.
Emails & Contact Details