tech question

Reply Subscribe

Thread Tools

Aug 13, 2009 | 08:25 AM

#11 (permalink)

clean teg

Thread Starter

Banned

Joined: Nov 2005

Posts: 2,607

Likes: 0

Quote:

Originally Posted by Nandosol

ouch expensive thing to pay for just for being pissed

yup

Aug 13, 2009 | 11:15 AM

#12 (permalink)

luvsracin87

turbo hhhmmmm?

Joined: Jan 2004

Posts: 702

Likes: 0

Do another compression test but this time put a cap full of oil in the number 1 cylinder. If the numbers come up signifigantly then its the rings, if it stays a 135 then most likely a valve.

__________________

Steve: (813) 810.4146 <~ call or text

Aug 13, 2009 | 01:05 PM

#13 (permalink)

clean teg

Thread Starter

Banned

Joined: Nov 2005

Posts: 2,607

Likes: 0

what will a cap of oil do????????

Aug 13, 2009 | 03:44 PM

#14 (permalink)

custom240sx

DC Crew Member #1

Joined: Mar 2006

Posts: 3,128

Likes: 0

Helps seal the rings temporarily. If the rings are bad it will boost pressure way up in the cylinder. If the valve is bent it will most likely stay the same pressure.

Aug 13, 2009 | 04:09 PM

#15 (permalink)

clean teg

Thread Starter

Banned

Joined: Nov 2005

Posts: 2,607

Likes: 0

no it changed alot it went from 135psi to 225psi why such a jump??

Aug 13, 2009 | 04:27 PM

#16 (permalink)

Nandosol

Garage Slut

Joined: Dec 2004

Posts: 760

Likes: 0

because your rings are bad

Aug 13, 2009 | 04:34 PM

#17 (permalink)

custom240sx

DC Crew Member #1

Joined: Mar 2006

Posts: 3,128

Likes: 0

You probably cracked a ring

Aug 13, 2009 | 05:09 PM

#18 (permalink)

clean teg

Thread Starter

Banned

Joined: Nov 2005

Posts: 2,607

Likes: 0

well if there is a cracked ring wouldn't it lose pressure not gain it by adding oil? shouldn't seep down the cylinder wall?

Aug 13, 2009 | 05:37 PM

#19 (permalink)

omgwtfbbq!

I race sailboats

Joined: Jan 2007

Posts: 4,216

Likes: 0

The oil seals the ring temporarily, increasing the pressure. This trick helps you identify if its a ring problem or a valve problem, because like has been said before if its the valve the pressure won't change.

__________________
Bitches don't know about the twin turbo