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

 
 
LinkBack Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #1  
Old 03-12-2011, 04:47 AM
Registered User
 
Join Date: May 2007
Location: Out in the Boonies of Hot, Dry, Dusty, Windy Nevada
Posts: 9,680
OM617.952 valve adjustment. How tight is too tight where the engine will not run?

I have this 84 300TD that was brought to me, to do my magical, mystic massaging to it to bring it back from the dead. (almost) Iam really surprised it made it from it`s home base to our front yard, some 40 + miles.

Iam told they know that Diesels aren`t really fast, but this one really has no fast get up and go, no acceleration, even though it is a Turbo. I ask simple questions, like when were the valves adjusted, oil changes, any sort of records, how long have you owned it, have you been using Vegitable oil etc....??? I was told it was run on WVO Blend for a period of time, but is on diesel now. and as far as any records, or maintenance

we open the hood and there is this grease ball of an engine in there. we start her up, and I thought the engine was going to jump out from under the hood. It was rocking back and forth, harder to the right, and sounded like it was barely able to run. out the tail pipe I could hear it a put put put sound. not the usual 617 sound. Iam surprised there aren`t dents in the hood from all the rocking.

They leave, and my wife and I take it for a run.It`s 3 miles down hill to Soquel (so-kill) and the go light turns red. the whole car is rocking back and fourth, just amazing it still ran. go up the ramp on the freeway and is doggy until I really put my foot into it, but don`t feel the kick down. go as far as the next off ramp and head for home. Well we make it home . this thing is bad. and going back up the 3 miles to home, had to really bury my foot into the Injection pump.

Next morning I adjust the valves. now on our cars when I do an adjustment, a little turn on the nuts and we are back into spec. if they are out. I couldn`t get any feeler gauge of any size to fit, I don`t think one is made that thin. I backed off the lock nuts several turns, and I bet about all the cap nuts except for one, I turned MORE than 360 deg + to get the feeler in. I kept turning & turning & turning, was beginning to think I was doing something wrong. 3rd from the end, had to jam in a pry bar to keep the valve from turning (no 3rd wrench) and the usually most difficult last one was the easiest and closest to spec.
I left them a little on the loose side.

So, whow many of you out there in MB land has had an engine with the most tight valves and still lived?


I swapped out the Injectors with a used set I have, blew out the plugged up IM banjo bolt and line. today got it all buttoned back up and finally started. WOW, what a beautiful smooth sound a 617 engine has when things are adjusted and cleaned. this thing is so smooth, not a hint of the shakes. took her for a run, and still lacking any boost or real acceleration. HMMMM

someone had messed with the ALDA, so replaced it with a virgin one I pulled at PNP. the old one had a rattle when I shook it, so probably some strong arm cranked down on it.
another thing I need to check is the Waste Gate hose, and maybe bypass the Switch-over valve. I did blow out the boost line to the SOV, but not to the ALDA. I did notice it`s Banjo bolt pretty Sooted up. so in the morning will do it.
I changed the engine oil and filter. the oil has a strange smell to it. Fuel dilution? maybe something from the WVO use? have no idea how long it has been since the last oil change.

Have a filter and ATF for a trans change, no record of it being serviced.

overall a nice car, but not worth the $4000 + they think it is worth, plus a long list of other fix it items I made a list of. big one, broked down drivers seat, like sitting on the floor. seat Bolster tore up etc... and drivers door check door post mount broken.

Charlie
__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works
Reply With Quote
 

Bookmarks


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 08:08 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page