 Compression tester VS Leak down tester, Which one to buy? |
 Mar 24, 2012 - 9:39 PM
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Enthusiast  Joined Sep 30, '11 From Sydney Currently Offline Reputation: 0 (0%)  |
Hey guys,
Looking at expanding my tool collection with either one of these two. The leak down test provides more comprehensive results as to where leaks are and exact percentages of cylinder leakage. But the compression test results seem to be what everyone uses in terms of a PSI number. My question is if i use the theoretical value of compression provided by the BGB which is 178 PSI (5s-fe engine) and i use the leak down tester and get a cylinder leakage of 10% can i just deduct 10% from that 178 PSI and get 160.2 PSI compression? If that way works i guess ill get the leak down test if not i need some opinions on what to get. Thanks, Reece |
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Replies
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Mar 26, 2012 - 9:24 AM
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Enthusiast Joined Dec 8, '03 From Lancaster CA Currently Offline Reputation: 6 (100%) |
the leakdown will tell you if its in your rings or valves where you are losing compression. I suggest just getting a compression tester. if you have bad compression, the engine is gonna need to be removed anyways.
-------------------- 2001 Celica GT-S Turbo
1997 Supra TT 6speed 1997 Celica 3MZ/1MZ swap 1990 Celica All-Trac |
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Mar 28, 2012 - 3:42 PM
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 Enthusiast Joined Jul 30, '04 From colorado Currently Offline Reputation: 1 (100%) |
QUOTE (Smaay @ Mar 26, 2012 - 3:24 PM)  the leakdown will tell you if its in your rings or valves where you are losing compression. I suggest just getting a compression tester. if you have bad compression, the engine is gonna need to be removed anyways. i agree with this. plus you can use a couple drops of oil to determine valves or rings. |
Posts in this topic
UVZ164 Compression tester VS Leak down tester Mar 24, 2012 - 9:39 PM
Syaoran Compression testers are cheaper than Leakdown test... Mar 25, 2012 - 3:57 PM UVZ164 Ok, well if the actual number doesnt really matter... Mar 25, 2012 - 5:17 PM Spider77 Compression testers are just overall engine health... Mar 25, 2012 - 6:03 PM
Syaoran QUOTE (Spider77 @ Mar 25, 2012 - 7:0... Mar 25, 2012 - 9:51 PM UVZ164 Ok means i wont need to borrow a compressor when i... Mar 28, 2012 - 3:47 PM |
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