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 > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 12-20-2007, 11:15 AM
Registered User
 
Join Date: Feb 2002
Location: Big Island- Hawaii
Posts: 106
617 300D Injector Test with a Screwdriver?

So, a mechanic was working on a friends car and put a screw drive on the injector (of her 300sdl) and put the plastic end up to his ear.

She tells me that he was able to diagnose 3 "bad" injectors this way. My question is what was he hearing and does this trick actually work.

I would love to do this with my 300d to check and see if I should replace the injectors (without going to the trouble of popping them out and pop testing them).

Any thoughts on what to listen for?
__________________
Thanks,
Will

1985 300D- 222k- (bad transmission)
1980 300D- (parts car)
1982 300SD- 242k
Reply With Quote
  #2  
Old 12-20-2007, 11:19 AM
shingleback's Avatar
Registered User
 
Join Date: Jul 2006
Location: Vancouver, BC Canada
Posts: 265
This is the same as using an engine stethoscope; just listen for the sound of the injector popping open. If you have an injector that is not working properly you will be able to hear the difference; all the others will sound pretty well the same.
__________________

'98 E300 DT
'87 190D 2.5 turbo RIP
'92 S500 Sold
'03 3.2TL-S A-Spec
Reply With Quote
  #3  
Old 12-20-2007, 01:36 PM
theo3000's Avatar
Leadfoot
 
Join Date: Dec 2006
Location: Apple Valley CA
Posts: 300
I used a cheap stethoscope from Harbor Freight to listen to my valves after an adjustment. At least I thought I was listening to the valves, I put the tip on each of the injectors.

I didn't really know what I was hoping to hear, but all cylinders sounded similar, so I thought that was good.
__________________
1985 300D California
Reply With Quote
  #4  
Old 12-20-2007, 01:40 PM
winmutt's Avatar
85 300D 4spd+tow+h4
 
Join Date: Apr 2006
Location: Atl Gawga
Posts: 9,329
If you listen carefully you can hear the sound of the injectors separate from all the other clanking without any instruments.
__________________
http://superturbodiesel.com/images/sig.04.10.jpg
1987 300D Sturmmachine
1991 300D Nearly Perfect
1994 E320 Cabriolet
1995 E320 Touring
2001 Eurovan FOR SALE
1985 300D car, sold and missed.
OBK #42
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 05:10 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, 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