hi,im new to the mercedes world,and just bought a 85 190E from a local dealer its fairly clean,but it seemed slugish so after i bought it me and a buddy put a tune up on it plugs,cap & rotor
and a air cleaner,did not change wires{did not have 60 dollars at the time and they didnt looked cracked} the plugs were bosch platnums.the car ran great for two days when all of a sudden it started missing and smoking when i started it,so i took it back to where i bought it,they had it a couple of hours and said the plug on #1 was fouled but when i explained that couldnt be cause i changed the plugs well then he says it was put in wrong.FISHY!!
anyway the car ran great up till now {about 2 weeks}when yesterday my girlfreind called me saying the car wouldnt start so we went to where the car was i tried starting it but just kept turning over i heard the fuel pump working and even tried hitting it with my hand still the motor wouldnt fire then i wiggled the coil wire,so then i pulled the #1 wire off and was going to check the spark but it started right up{why!!} and ran good till i got home
when i restarted it it acted just like it did before {missing,smoking} i pulled the #1 wire off and no change {weird}im going to pull #1 plug after i write this {please help}
is this car a lemmon or am i missing some thimg easy i dont remeber any of the plugs looking real bad when i changed them
i hope its not oil on the #1 plug will post after i get done how it looks any help would be much appreaceated im already thinking about putting a new plug in # 1 and selling it for what i payed for it i dont wanto cause we like it but dont wana go broke on a lemom{please help}thanks steve

When my catilitic converter plugged up it acted similar. To test I simply opened up a joint ahead of it and it ran perfect. I have very little experience here and just saw your post trying to fix another problem. FYI

My W124 260E has the same problem with platinum plugs. I went back to regular 4 prong copper and it runs perfect now. Try switching back to regular.

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1988 260E

Yes definitely change to normal plugs

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190E's:
2.5-16v 1990 90,000m Astral Silver
2.0E 8v 1986 107,000m Black 2nd owner
http://www.maylane.demon.co.uk/190esmall.jpghttp://www.maylane.demon.co.uk/190esmall2.jpg

Champion SY6CC (i think thats the number)are the ones for the 8V 190, im a member of the UK forum, and there has been a lot of talk about plugs....the general feeling is any change from the proper brand tend to cause problems, even if changing to another quality brand such as NGK.

cheers

where's that?

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190E's:
2.5-16v 1990 90,000m Astral Silver
2.0E 8v 1986 107,000m Black 2nd owner
http://www.maylane.demon.co.uk/190esmall.jpghttp://www.maylane.demon.co.uk/190esmall2.jpg

www.mercedesclub.org.uk

its pretty good.

cheers

Pento, it will be good to have another 190 owner on there as well!!!

great, cheers!

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190E's:
2.5-16v 1990 90,000m Astral Silver
2.0E 8v 1986 107,000m Black 2nd owner
http://www.maylane.demon.co.uk/190esmall.jpghttp://www.maylane.demon.co.uk/190esmall2.jpg