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vacuume line leak


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shari4fun2000
Anonymous Poster
shari45@comcast.net

Sep 13, 2009, 8:30 AM

Post #1 of 10 (3125 views)
vacuume line leak Sign In

i have a 2002 chvey cavilier with a vacuume line leak that we cant find replaced one bad hose but error still there and says ther is still a leak it reads errror code 440 were is that line we just cant find it it is a z24 please help im running out of options thanks shari


Sidom
Veteran / Moderator
Sidom profile image

Sep 13, 2009, 8:41 AM

Post #2 of 10 (3122 views)
Re: vacuume line leak Sign In

That code isn't for a vacuum leak.

It's an evap code for a large leak. Check your gas cap & o ring, look at the filler neck, check hoses underneath around the fuel tank & canister.......


Guest
Anonymous Poster

Sep 13, 2009, 12:51 PM

Post #3 of 10 (3118 views)
Re: vacuume line leak Sign In

i did replace the gas gap already and the only slow leak i have is a antifreeze leak never any gas on the ground the auto zone reader said a vacume line leak my brothers reader gave me the 440 code just want to get it to p-ass emmissions any further info would gladley help im going to have my boyfriend work on it monday thanks so so so much for all and any helpUnsure


Guest
Anonymous Poster

Sep 13, 2009, 4:58 PM

Post #4 of 10 (3108 views)
Re: vacuume line leak Sign In

any help would be great thanks Unimpressed


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Sep 13, 2009, 5:01 PM

Post #5 of 10 (3103 views)
Re: vacuume line leak Sign In

As Sidom already told you, that code has nothing to do with a vacuum leak. The fuel tank is a sealed system and it's failing the pressure test. the gas cap is the most common cause but it can be any number of things. the only way you can find a problem like this is with a smoke tester. If you don't have one, don't even waste your time looking.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Sep 13, 2009, 7:26 PM

Post #6 of 10 (3094 views)
Re: vacuum line leak Sign In

Just a note on finding vacuum leaks:

If you spray non flammable brake cleaner (don't allow it on car paint) at suspect areas while engine is idling the idle will change or even stall engine. That's the area to work on if found that way.

You can do this with carb cleaner too but it can catch on fire* so I suggest the non flammable route if looking. Gas caps mean a lot on certain cars. If it was mixed up at a gas station you need the right one!

T

*Not funny!




(This post was edited by Tom Greenleaf on Sep 13, 2009, 7:31 PM)


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Sep 13, 2009, 7:28 PM

Post #7 of 10 (3089 views)
Re: vacuume line leak Sign In

She has an EVAP code, not a vacuum leak.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



shari4fun2000
New User

Sep 17, 2009, 8:43 AM

Post #8 of 10 (3068 views)
Re: vacuume line leak Sign In

okay i had a smoke test done and they couldnt find any thing other than a solenoid was bad that was so we replaced the canister solenoid valve down by the gas tank could this have been the problem?? The par is in now were waiting and driving it to see if the light comes back on. The car is still reveing up to 3000 rpm and and drops down to 1200 what could or would be causing this i just replaced all boots and spark plugs cause they were bad hmm any help would greatly be appreciated thanks shari


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Sep 17, 2009, 8:51 AM

Post #9 of 10 (3066 views)
Re: vacuume line leak Sign In

The solenoid could have been the PO440 problem.

The RPM problem could be a vacuum leak but this is the first mention of that problem. The smoke test can be used to find that also.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



shari4fun2000
New User

Sep 17, 2009, 10:32 AM

Post #10 of 10 (3061 views)
Re: vacuume line leak Sign In

i know i forgot to mention it the place that did the smoke test said they couldnt find any thing but if the light came back on the would do the test again for free within 30 days so no its the waiting game to see if the light comes back on as of right now i have no codes reading on the machine i own but we just replaced the part yesterday when i origanly post my boyfriend was gone till monday and he just told me i needed to ask about the rpms thats the last problem im tring to figure out he just isnt any good at cars so im tring to help out with any info i can thanks so much shari






 
 
 






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