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  #1  
Old 11-16-2001, 06:09 PM
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190E firing order question

hello,

I have a 1986 190E 2.3 that I am working on, but I don't know if it's a 16V or not. I bought a distributor cap and rotor for it assuming it was a 16V. When I removed the old distributor cap the fastener was different. The old cap had a hook type hold down. The cap I bought had actual screws to ahod it down. I figure that this engine I am working on is not a 16V.

The car sounded like it was missing at idle so I decided to replace the plugs (bosch super H8DC) and to check the cap and rotor. I also checked the wires and they all tested around 1.1K ohms. I did notice as I was pulling the wires and testing them that they were in the wrong order. The plastic tunnel that the wires go thru indicate the firing order is 1-3-4-2 (2 being the front of the car closest to the radiator fan.) When I tested the wires, 1 and 4 were interchanged. I figured that was the cause of the misfire/stumbling at idle. I have the service manual for the engine and it indicates that the firing order is 1-3-4-2 with 1 being closest to the radiator fan.

Now the car won't start. I tried both ways. What is the correct sequence to this? Engine number is 102985-12-027203

any help would be appreciated. Thank in advance

Nolan
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  #2  
Old 11-16-2001, 06:31 PM
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The engine you are working on is a 8V motor. & the correct cap should be MB 000-158-43-02.
The firing order is 1-3-4-2 & the cap should be marked. 1 is closest to the front of the engine.
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Last edited by mbdoc; 11-17-2001 at 09:38 AM.
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  #3  
Old 11-16-2001, 08:52 PM
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-- Comment irrelevant after previous post was edited --

Sixto
91 300SE
81 300SD

Last edited by sixto; 11-19-2001 at 01:01 PM.
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  #4  
Old 11-17-2001, 01:24 AM
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1-4-3-2 didn't work

MB Doc,

1-4-3-2 didn't work....I got nasty popping sounds when cranking. I didn't manage to get the corrent cap and rotor yet ( have to exchange the ones I bought).

I tried the 1-3-4-2 as per the book and it started up but ran rough for about 5 min then cleared up. I think it could run a little smoother after the cap and rotor are replaced.

Thanks for the replies.

Nolan
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  #5  
Old 11-17-2001, 09:38 AM
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OOPS 1-3-4-2 is correct! Brain Fade.
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  #6  
Old 11-18-2001, 01:24 PM
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M.B.DOC

No reason to apologize. Didn't you say 1-3-4-2 in your first post?
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  #7  
Old 11-18-2001, 08:28 PM
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I believe mb doc edited his original reply to reflect the correct firing order.
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  #8  
Old 11-18-2001, 09:47 PM
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Didn't know that could be done. Wish I could take back some things that I have said and change them!
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'05 E320 CDI - 86,000 miles
'86 300SDL - 360,000 miles
'85 300SD - 150,000 miles (sold)
'89 190D - 120,000 miles (sold)
'85 300SD - 317,000 miles (sold)
'98 ML320 - 270,000 miles (sold)
'75 300D - 170,000 miles (sold)
'83 Harley Davidson FLTC (Broken again) :-(
'61 Plymouth Valiant - 60k mikes
2004 Papillon (Oliver)
2005 Tzitzu (Griffon)
2009 Welsh Corgi (Buba)

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