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 02-01-2007, 05:09 PM
Registered User
 
Join Date: Aug 2006
Location: Tampa
Posts: 195
put it to the floor and start her...

had a vw diesel in the 80's and she would start everytime by waiting for gps, and putting the throttle to the floor.

this will be my first mb 83 300sd- the guy says it takes a bit to start ( forget his exact words). i spoke to a mb mech. and he says rings maybe bad ( mech also wants me to buy his 83 300sd). after researching some could be filters, gp etc.

how do you guys start yours? and how would you rule out rings?

Reply With Quote
  #2  
Old 02-01-2007, 05:33 PM
Registered User
 
Join Date: Aug 2006
Location: Tucson AZ
Posts: 98
When it is warm, cold start: wait for glow plugs, don't touch throttle, start

When it is cold below 45^ is cold here in AZ, cold start: wait for glow plugs, turn key, slowly depress throttle until it starts and keep pedal slightly depressed until it starts.

'81 300TD 260K miles
__________________
Mike

1980 300SD
1981 300TD
1998 E320 Gasser Wagon
2000 SL500
Reply With Quote
  #3  
Old 02-01-2007, 05:40 PM
vstech's Avatar
DD MOD, HVAC,MCP,Mac,GMAC
 
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 26,518
above is good, but when it is REALLY cold... below +20F turn key until the GP light comes on, wait 30 seconds, listen for click, press pedal about 1/4 down, then turn key until it starts... My 82 will start almost instantly, but I gotta hold the pedal for about 30 seconds before it will stay running at idle when it is real cold. I have not started the car below about 18F cause I run in NC, and it has yet to get that cold here since I got the car running.
if you have compression issues, and it won't start with this method, after the first 30 seconds, turn off the key, turn it back on, and wait another 30 seconds, Then try the 1/4 to full throttle starting...
John
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
Reply With Quote
  #4  
Old 02-01-2007, 06:55 PM
Registered User
 
Join Date: May 2006
Location: W. WI
Posts: 307
Bad rings should give you nasty blow by. Start engine, remove oil filler cap & if it looks like a city bus ...
Reply With Quote
  #5  
Old 02-01-2007, 10:23 PM
Banned
 
Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
Quote:
Originally Posted by vstech View Post
above is good, but when it is REALLY cold... below +20F turn key until the GP light comes on, wait 30 seconds, listen for click, press pedal about 1/4 down, then turn key until it starts... My 82 will start almost instantly, but I gotta hold the pedal for about 30 seconds before it will stay running at idle when it is real cold.
Precisely.

And additionally:

When it's 0F. hold the engine at 1000 rpm for two minutes before even considering lifting your right foot.
Reply With Quote
  #6  
Old 02-02-2007, 10:25 AM
mobetta's Avatar
(Oo{-I-}oO)
 
Join Date: Mar 2006
Location: minnesota,hey.
Posts: 1,841
Quote:
Originally Posted by vstech View Post
above is good, but when it is REALLY cold... below +20F turn key until the GP light comes on, wait 30 seconds, listen for click, press pedal about 1/4 down, then turn key until it starts...
John
wouldn't that Click mean the relay just timed out, and the gloplugs are no longer on? i do this, but I then cycle the key, so the relay turns on again.

-6 outside, I wonder if she'll start today....( no block heater)
__________________
1984 123.193 372,xxx miles, room for Seven.

1999 Dodge Durango Cummins 4BTAA 47RE 5k lb 4x4 getting 25+mpgs, room for Seven.
Reply With Quote
  #7  
Old 02-02-2007, 10:41 AM
Registered User
 
Join Date: Jul 2006
Location: St. Louis, MO
Posts: 95
I don't have any blowby to speak of, so that would lead me to believe that the piston rings are ok, but the car is a bear to start if its cold. Even after 4 hours on the block heater, I have been unable to get it started. My thermostat is stuck open right now, and since its 19F, I'm not going to go out and mess with it. More time on the block heater does the job, and as long as I have moved the car a couple of times when I get off work at 9pm and the temps have really dropped I have no problems starting. Just wondering if I may have compression that is a little low, and that is causing my cold start problems?
__________________
Chris

82 300SD
Reply With Quote
  #8  
Old 02-02-2007, 11:00 AM
Registered User
 
Join Date: Jun 2004
Location: West of Ft. Worth. TX
Posts: 4,186
Valve adjustment, which affects compression, will also have an effect on cold starting. Glow plug condition is the other main parameter. Also, I believe a fresh secondary fuel filter seems to help some.

When it is really cold, (subzero in Neb.) I just let the glow plugs go 2-3 complete cycles (till the relay clicks) and feather the throttle so as to not apply too much cold fuel when it starts to fire.

__________________
Sam

84 300SD 350K+ miles ( Blue Belle )
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 10:08 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2022, 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