Congratulations to vtecmec for winning May/June's Lude Of The Month, with his DIY Turbo BB1 build.

>>> Click Here For Profile <<<

Image

Compression testing

As much of the Lude knowledge we have in one handy place
Post Reply
User avatar
JayJay
Posts: 2190
Joined: Thu Jul 01, 2010 9:21 pm
My Generation: 4G
Location: Isle of Man

Compression testing

Post by JayJay » Fri Dec 17, 2010 2:44 pm

http://www.xlr8.co.im/forum/viewtopic.php?f=40&t=3077

Useful info (images don't work though :() specifically:
Generally a difference of more than two Bars between cylinders can indicate a possible fault.
The first test compression was higher than the following recordings. This could indicate a carbon build up on the piston or another possible fault.

The quicker the compression builds the healthier the engine.

If the tester shows a slow rise in pressure or jolts up progressively on each compression stroke (you may need a helper to observe the reading) this may indicate cylinder bore/ring damage or leaky valves.
Jay
Shiny wrote:I sniff dirty pants.

Post Reply

Return to “Guides / How to's / Tech Section”