Classic Mercedes DIY tips and hints Discussion forum to share your DIY projects.

R107 1978 v8 3.tltr

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old May 25, 2023 | 05:59 AM
  #1  
Macyboy's Avatar
Thread Starter
Newbie
 
Joined: May 2023
Posts: 4
Likes: 0
Sl r107 350 v8 1978
R107 1978 v8 3.tltr

Hi folks my mercedes r107 1978 v8 3.5ltr k jetronic wont tick over and is a bad starter now.
last week it was blowing smoke out of the back also felt under power having no kick down. I fiddled under the bonnet one night only to find the next day the smoke had stopped and it was back to full power, kick down was fine. After a lenthy journey i attempted to start it with great difficulty. It needed full throttle and the smoke has appeared again . Although once reving it certainly has full power.it just wants to die and does on tick over and its terrible to start with smoke of course. Can anyone help me please .
Reply
Old May 26, 2023 | 03:16 AM
  #2  
ygmn's Avatar
MBWorld Fanatic!
5 Year Member
Photogenic
Liked
Loved
 
Joined: Sep 2018
Posts: 3,243
Likes: 932
From: New Orleans Area
2015 E400 Sedan
what does TICK OVER mean?
Reply
Old May 26, 2023 | 03:21 AM
  #3  
Macyboy's Avatar
Thread Starter
Newbie
 
Joined: May 2023
Posts: 4
Likes: 0
Sl r107 350 v8 1978
Originally Posted by ygmn
what does TICK OVER mean?
hi i mean at idle no throttle. It was driving perfecr. After a long drive i got back in it and it was hard to start and just wanted to die. I had to keep the revs high to get home. I noticed it was also smoking . Ive checked the oil and its orange in colour and hasnt burnt i drop. I think its fuel smoke ?
Reply
Old May 27, 2023 | 02:51 AM
  #4  
ygmn's Avatar
MBWorld Fanatic!
5 Year Member
Photogenic
Liked
Loved
 
Joined: Sep 2018
Posts: 3,243
Likes: 932
From: New Orleans Area
2015 E400 Sedan
Orange oil?
What color is Antifreeze?

Might have anti-freeze in oil and that is bad as ruins bearings.
Might have head gasket problem.
IS oil level over full?
Do a compression check but make sure oil is good.
Reply
Old May 27, 2023 | 03:58 AM
  #5  
Macyboy's Avatar
Thread Starter
Newbie
 
Joined: May 2023
Posts: 4
Likes: 0
Sl r107 350 v8 1978
Originally Posted by ygmn
Orange oil?
What color is Antifreeze?

Might have anti-freeze in oil and that is bad as ruins bearings.
Might have head gasket problem.
IS oil level over full?
Do a compression check but make sure oil is good.
Hi. The Anti freeze is blue so the oil and compression is good. Ive tested the compression.
Ive now replaced all the components at the tank, pump, accumalator, filter. Ive smoke tested it for vacuum leaks whilst holding the air fliw meter open to allow smoke to pass.
ive now noticed someone has bodged the mixture screw as its been replaced with silicon. However It did run ok before like this. Ive got new injectors, seals and seats coming. Plus rotar cap and arm even tho mine look fine. It did fire up yesterday from cold but doesnt liken idling and its smoking ?
Reply
Old May 28, 2023 | 04:13 AM
  #6  
ygmn's Avatar
MBWorld Fanatic!
5 Year Member
Photogenic
Liked
Loved
 
Joined: Sep 2018
Posts: 3,243
Likes: 932
From: New Orleans Area
2015 E400 Sedan
what color smoke?
Reply
Old Sep 1, 2023 | 06:31 PM
  #7  
avensis22's Avatar
Newbie
 
Joined: Sep 2023
Posts: 14
Likes: 1
bmw
Hi, did you manage to resolve the problem?

Last edited by avensis22; Sep 14, 2023 at 06:31 PM.
Reply
Old Sep 2, 2023 | 03:14 PM
  #8  
Macyboy's Avatar
Thread Starter
Newbie
 
Joined: May 2023
Posts: 4
Likes: 0
Sl r107 350 v8 1978
Originally Posted by avensis22
Hi, did you manage to resolve the problem?
yes it was the mixture screw and valve stem oil seals . Slight tapping was hydrolic tappets and followers only on the drivers side (uk)
Thanks all
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-1

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-2

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-3

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-4

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-5

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-6

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-7

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-8

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
story-9

10 Most Reliable Mercedes-Benz Models You Can Buy Used

 Verdad Gallardo

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 01:50 PM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE