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 > Mercedes-Benz SL Discussion Forum

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 05-18-2019, 10:15 PM
Registered User
 
Join Date: Jan 2019
Posts: 1
Engine rebuilding vers doing a quick fix

I have a 1988 560sl, after a lengthy line up apx 2hr my engine started to smoke very bad . After a few miles it did clear upyho , the next day same thing when starting up and idling for a short time to make matters worse white smoje appeared. The engine never registers hot or overheats
Reply With Quote
  #2  
Old 05-18-2019, 10:30 PM
Registered User
 
Join Date: Sep 2001
Posts: 677
Could be a bad diaphragm in the transmission modulator. Pull the hose off at the modulator and check for ATF in the line, that would account for white or very light blue smoke. Transmission shifting ok? Fluid up to the mark?

Losing any coolant? Send out an oil sample to a lab to check for coolant in the oil.

Valve seals are a common problem and cause smoke on start up or during very high vacuum situations. They are replaceable without removing the cylinder head.

Mark an upward pointing reference index on the spark plugs, remove them. If there is an ash deposit on the porcelain on the side of the plug pointing toward the the valves (particularly the intake valve) the valve seals are leaking.

A rebuild? IMO, not yet, need more diagnosis. Those engines are very robust on the bottom end. Unless it is very high mileage or has been overheated the problem is probably top end only.

How many miles? Been overheated? Clean inside?

Good luck!!!
__________________
Does a Caddy stretch? No, but a Mercedes bendz.
Reply With Quote
  #3  
Old 05-19-2019, 09:40 AM
Registered User
 
Join Date: Jan 2012
Posts: 7,149
Also remove the air filter lid and look for oil in the air filter ( from the crankcase breather. ) If you have oil up there check the PCV valve system for a clog.

What is the history of this car? Has anyone put additives in the fuel tank?
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 08:48 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