Compression Test.
#6
Supporting Vendor
iTrader: (33)
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,659
Total Cats: 134
:gay: car battery
only problem is you'll get a cold test, not a hot test. so the numbers will all be a little low. what you want to see though is all the numbers about the same. IE 165 155 160 155 appears low, but it's consistent so probably fine.
If you get something like 100 150 160 155 you have a problem.
only problem is you'll get a cold test, not a hot test. so the numbers will all be a little low. what you want to see though is all the numbers about the same. IE 165 155 160 155 appears low, but it's consistent so probably fine.
If you get something like 100 150 160 155 you have a problem.
#8
Boost Czar
iTrader: (62)
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,688
Total Cats: 4,113
did the spark plugs have oil all over them? i thought you did a test?
and you blew oil everywhere...you have bad rings...possibly melted pistons/broken ringlands.
since it's out, just take the head off (10-20mins) and look at the pistons up close. the cylinder walls should have cross hatching throughout, if you see vretical scoring, there's a problem there. or if you see a warped/melted/distorted piston you'll just be able to see it.
see the pics i took and you can see what im talking about in my engine build thread. in the BS section.
but if you are going to test again....plug the oil feed line....it may spray.
and you blew oil everywhere...you have bad rings...possibly melted pistons/broken ringlands.
since it's out, just take the head off (10-20mins) and look at the pistons up close. the cylinder walls should have cross hatching throughout, if you see vretical scoring, there's a problem there. or if you see a warped/melted/distorted piston you'll just be able to see it.
see the pics i took and you can see what im talking about in my engine build thread. in the BS section.
but if you are going to test again....plug the oil feed line....it may spray.
Thread
Thread Starter
Forum
Replies
Last Post
graexodus
Miata parts for sale/trade
9
10-25-2015 03:34 PM