Number 5 cyl problem in my E28 520i...

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- Zoidberg
  
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posted
18 years ago

Thu, Aug 4, 2005 4:38 AM

I have a 1984 e28 520i with 220.000 kms and I have problem with the number five cyl. When I take out the the spark, this it is covered with oil. The CO2 reading of the car is 1,4 % and the HC is 450 ppm. The compression of the cyl. is 150 psi and the others cyls. is betwen

175 and 180 psi.

Any of you have a similar problem? what happen? Is the rings? What can I do without overhaul? A ring change?

I only use a Liqui Moly oil and change it each 5000 kms.

Regards, and sorry for my English, I live in Chile...

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- sylvain,sylvie
  
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posted
18 years ago

Fri, Aug 5, 2005 12:28 AM

9 out of 10 it's the head gasket, but in the same time check carefully the cylinder head...

good luck

"Zoidberg" a écrit dans le message de news:

1_641843 snipped-for-privacy@autoforumz.com...

- D
- Don Corleone
  
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posted
18 years ago

Fri, Aug 5, 2005 1:36 AM

1.- Revisa regulación de válvulas. Sería el ideal que perdieras compresión solo por eso. 2.- Antes de medir la compresión echa una gota de aceite en el cilindro que está con problemas. Si sube, son los anillos. 3.- Podrían ser también los retenes de válvula pero lo dudo.

Suerte y cuenta cómo te fue.