Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 03-20-2013, 10:08 PM
WlittleBenz
 
Join Date: Mar 2013
Location: Soperton, GA.
Posts: 1
“burn valve” ???

Hey,
Need a little help try to trouble shoot a problem. I am looking to get a 1997 E320; the owner says that the spark plugs have been just changed. Now the mechanic says that the car has a “burn valve” and not getting enough compression ;he says that the numbers should be 90; but Its 60. Does anyone have any advice about the possible problems and/or fixes to this issue?

Reply With Quote
  #2  
Old 03-21-2013, 07:39 AM
Senior Member
 
Join Date: Nov 2002
Posts: 736
find another e320 to buy and/or find another mechanic. compression at 90 would be low, more like 150. never heard of a burn valve on any car. good luck, chuck.
Reply With Quote
  #3  
Old 03-21-2013, 07:49 AM
Hirnbeiss's Avatar
ich fahre, also bin ich
 
Join Date: Mar 2002
Location: South Florida
Posts: 1,660
He means "burned valve", which is when the valve won't seal anymore, posibly due to overheating. Low compression can be due to a valve or ring issue, and usually a wet compression test is done to detemine which.
__________________
Prost!
Reply With Quote
  #4  
Old 03-21-2013, 07:57 AM
Senior Member
 
Join Date: Nov 2002
Posts: 736
if you are correct about the burned valve, 90 is still too low for the engine, which is why i say-find another mechanic AND find another 97 e320 to buy. valve work on that engine ain't cheap. good luck, chuck.
Reply With Quote
  #5  
Old 03-21-2013, 10:27 PM
Registered User
 
Join Date: Jan 2012
Posts: 7,515
Wet compression tests are a dead end. The best way to find compression leaks is to pump air into the cylinder and see where it leaks out. This also is the best way to find a cylinder to coolant leak.
Reply With Quote
  #6  
Old 03-21-2013, 10:51 PM
Volker's Avatar
Registered User
 
Join Date: Mar 2013
Posts: 124
Quote:
Originally Posted by porkface View Post
if you are correct about the burned valve, 90 is still too low for the engine, which is why i say-find another mechanic AND find another 97 e320 to buy. valve work on that engine ain't cheap. good luck, chuck.
depends how cheap the car is and what you can find for parts. If you find one at the picknpull, just grab the engine fro $200 or whatever and you're set. Sometimes you can poop a golden horseshoe...
Reply With Quote
  #7  
Old 03-22-2013, 06:37 AM
Moderator
 
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
A normal compression on a warm engine should be in the 160psi range. (M104)

Did someone do a Running compression test??

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 05:55 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page