MB 6 cyl. ignition order?!? Help! :)

[jaques2k]

Hi! First of all - this is a great forum I think! Now to my problem: I have a MB 380 SE with a 6 cyl. engine (I know it´s a V8 originally). It´s a standard 6 cyl. gasoline engine with carburator, and now I wanted to know if someone has the information of what the ignition (fire) order is, e.g. wich cylinder should fire first, then second and so on...

If someone has a 6 cyl engine, it can be found from there, wich cable from the distributor goes to wich cylinder... I really would apprechiate this help, because the engine and the car is in very good condition otherwise, but it has terrible exhaust values, and runs very badly on both idle and higher rpm:s. Does anyone by the way know what this could depend on?

I right now has it at a workshop, and they´ve measured the exhaust values, and they say that some exhaust value is up to 8000. The highest limit here in Finland is 800, and if you got that high, it´s firing is very bad. The repairman said that if you have a 4 cyl. engine and cut off one cylinder, you still have no more exhaust than 2000, so this is VERY bad...

Thanks for any help out on this one!

 

[Andy]

153624

Regards

Andy @ www.mercedesservicing.com

 

[jaques2k]

Thanks!

Thanks a lot, Andy!!

 

[jaques2k]

Reparation...

Just visited my workshop. The guy there said that he will have to make a throughout restoration of my straight 6 cyl. motor. At least three cylinders didn´t have any compression at all (80% leak, compared to normal 10%), and some piston rings was broken. This is a result of poor storage from the previous owner who had storaged the car for a few years without proper preparations, and then one day got the crazy idea of go out driving... Lucky for me I got this car almost for free, so I can throw some money in it and get a new (restored to new) motor... About two weeks wait now and quite a lot of money is going to go there... :wink:

 

[Phil642]

Something wrong with my ignition

Dear MB forum Specialists,

I'm very glad to find this site and to read about this marvelous car.

Newbee on this forum I want first to apologise my poor English , I'm Belgian, French is my usual language.

I've a w126 280s (1981) car and I've just changed the spare plugs, the ignition wires, the rotor and distributor cap.

Without hanbook I made a diagram of the wires and replaced averything as it was before.

But now the engine is turning but I feel holes in the ignition before looking further I would like to show you a diagram an please tell me if you see something wrong in it :

Rear engine - Cylinder order
1
2
3
4
5
6

Distributor cap - firing order
Rotation clockwise ==> :?:

--5---3---6--
x-----R-----x
--1---4---2--
Front car

x = screws
R = rotor

I hope this is clear enough.

Thank you in advance.

 

[piestore]

fire order

Hi

Phil 642

I think your problem is you are numbering the cylinders from the back

try from the front

rear engine cylinder order

6
5
4
3
2
1

hope this helps

 

[Phil642]

Hi Piestore,

Thank you for your prompt reply.

If I'm wrong with the numbers of my cylinders I'm also wrong concerning the distributor cap :cry: , in this matter it will not change something. :?

By the way thank you again for your cooperation.

Regards,


Phil

 

[Nick Gilbert]

W123 Ignition

Hi guys

Just joined the forum. Think its excellent.

I have a 6cyl W123, have just replaced the plugs & leads and the things now running rough.

I dont have a book, getting one soon!, so did it the old fashioned way and i think i may have got the order wrong on the dizzy cap.

Could someone clarify what the dist cap order should be?

Many thanks

Nick

 

[Nick Gilbert]

W123 Ignition

Hi guys

Just joined the forum. Think its excellent.

I have a 6cyl W123, have just replaced the plugs & leads and the things now running rough.

I dont have a book, getting one soon!, so did it the old fashioned way and i think i may have got the order wrong on the dizzy cap.

Could someone clarify what the dist cap order should be?

Many thanks

Nick

 

[teky]

1-5-3-6-2-4 rotation clockwise distrib cap setup, engine setup front to rear on the straight 6 cylinder is 1-2-3-4-5-6

 

[Nick Gilbert]

Thanks mate. Turned out to be the cold start relay and valve not working properly. Have nt replacements yet though.