Go Back  MBWorld.org Forums > Mercedes-Benz Sedans > E-Class (W211)
2007 E350-P0442 Small EVAP Leak >

2007 E350-P0442 Small EVAP Leak

Notices
E-Class (W211) 2003-2009

2007 E350-P0442 Small EVAP Leak

 
Old 01-21-2019, 10:38 PM
  #1  
Newbie
Thread Starter
 
Join Date: May 2012
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
1999 C230K
2007 E350-P0442 Small EVAP Leak

Please help!

Trying to diagnose a P0442 on 2007 E350 I recently acquired.

EVAP system Diagram with part numbers would be highly appreciated!So far:
  • replaced gas cap
  • checked(visually) EVAP connections to engine
    • replaced one broken clamp(CEL returned)
  • checked (remove/install) charcoal canister
    • visual Inspection of connections to canister
    • remove/install canister valve at top of charcoal canister. O-ring visually in good condition
Purchased a vacuum pump/gauge kit today to further diagnose. Iím hope someone is able to direct me to an EVAP system Diagram specifically for this vehicle. Iíd love to get a system part number list and start going through and replacing o-rings and any other rubber replaceables. California car which means it drinks 10% Ethanol most of the year which I understand can wreak havoc on rubber fuel system parts over time.

Will begin by replacing rubber fuel lines connecting components as I diagnose.

Any other advise on testing methodology would be appreciated.
c_c230k is offline  
Old 01-25-2019, 04:41 PM
  #2  
Newbie
Thread Starter
 
Join Date: May 2012
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
1999 C230K
Purge valve likely problem

attached my vacuum pump to the purge valve and it holds vacuum from the engine side, but immediately and quickly lost vacuum when attached to the EVAP end of the valve.

New purge valve on order! Will update if fixed 🤞
c_c230k is offline  
Old 01-27-2019, 04:41 PM
  #3  
Newbie
Thread Starter
 
Join Date: May 2012
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
1999 C230K
EVAP OBD II Monitor

any advise on setting the EVAP OBDII monitor?

On 2nd 20 minute idle cycle per instructions at this link: https://m.smogtips.com/OnlineForumQu...LK-Drive-Cycle

No codes but EVAP monitor still shows incomplete.

Any advise?
c_c230k is offline  
Old 01-28-2019, 12:54 PM
  #4  
Newbie
Thread Starter
 
Join Date: May 2012
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
1999 C230K
Still waiting for EVAP monitor to come ready!

completed 4+ drive cycles, 2 of which were 50 miles plus. Iíve also let it idle at 0-load for 20 minutes twice(starting at 80C).

No EVAP codes, but an errant, pending P0025 popped up. Shouldnít affect the EVAP monitor.

Any insight appreciated!
c_c230k is offline  
 

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: 2007 E350-P0442 Small EVAP Leak


Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: