Subject	Looking for feedback on low compression numbers.
Posted by	J-Mart on March 14, 2015 at 9:47 PM
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Message	I did a compression test on my new TT. Got the results below, motor was warmed up: #2 160 psi #4 155 psi #6 60 psi dry, 110 psi wet (Added 1 TBSP or so of 10W-30) #1 145 psi #3 150 psi #5 160 psi I would say the wet test basically shows I have bad compression ring on #6. Any other thoughts? My buddy has a leak down tester setup I can have access to tomorrow morning, do you guys think it is worthwhile to perform a leak down test as well? And if so, test all the cylinders or just #6? Thanks! Jared 1994 Twin Turbo
Follow Ups	Looking for feedback on low compression numbers. - J-Mart 21:47:50 03/14/15 How many times did you check the #6 cylinder? - SammybTT(TN) 22:40:57 03/14/15 Cylinder #6 was tested twice in each condition. - J-Mart 23:04:35 03/14/15 I think you next step is the leak down test - SammybTT(TN) 11:50:36 03/15/15 Either bad rings or valves leaking. Do a leak down >> - ZUL8TR 05:33:30 03/15/15 Isn't #6 the one that usually malfunctions the most often? - Zuberman 07:57:53 03/15/15 Yes at rear and cooling is restricted in stock casting (n/m) - ZUL8TR 09:18:20 03/15/15 Do you have a loud lifter tick or a big smoke cloud? - puchy 15:46:01 03/15/15 PO told me it was burning oil and suspected it had low - J-Mart 17:14:25 03/15/15 lifter tick is normal but not when it is rod knock loud, - puchy 07:24:06 03/16/15 I just don't see how adding oil could change the number for - J-Mart 11:46:11 03/16/15 On the off chance it's just a stuck ring. Can try putting - jzack 20:03:28 03/16/15 Can you elaborate some more on what a stuck ring - J-Mart 21:38:49 03/16/15 Stuck ring - this link will explain better. Often happens - jzack 19:32:59 03/17/15 PS - Concern would be a previous owner not keeping - jzack 19:38:27 03/17/15 Interesting. The car is low mileage (70k) but I know that - J-Mart 22:22:11 03/17/15 Alright, leak down test complete. - J-Mart 21:47:07 03/16/15 Re-build..... - Hiram 13:28:23 03/17/15 Green N says you have no clue :-O Needs bottom end rebuild - ZXoltan 14:58:36 03/17/15 So that "rebuild" write-up from TwinTurbo.net's Tech pages - Hiram 16:05:05 03/17/15 This one is more applicable - -Grimm- 16:56:07 03/17/15 Yes, now you are correct...newb with the lowercase "n" - ZXoltan 18:37:31 03/17/15 Re: Yes, now you are correct...newb with the lowercase "n" - Hiram 23:11:07 03/17/15 You guys make a cute couple :) (n/m) - -Grimm- 14:39:41 03/18/15 LOL - ZXoltan 17:10:02 03/18/15 Re: LOL - Hiram 02:32:43 03/19/15
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