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Compression and leakdown test needed
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#1
06-02-2015, 11:55 AM
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Compression and leakdown test needed
Advise needed,
I wanted to see if someone would like to give me a hand on a leak down and compression test. I know I have a cylinder head leak I just want to see if I need to rebuild now or how bad it is. I am new to this but am very handy and do not mind getting my hands dirty. I do not have a compression tester or a leak down tool. So these would be needed If anyone has done this and knows what to look for please help me out. I do not want to damage the motor . Specs: 3.2 euro motor 1985 911 AC delete heater back date SSI's Thank You Len 
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#3
06-03-2015, 09:42 AM
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Do you think the leak is due to a broken head stud? I could help you out this coming Sunday, Monday or Tuesday afternoon. Where in Baltimore are you?
__________________
Chris Robel Current: 1987 Carrera Targa 3.4 993SS cams, Smokey Silver Semi-Daily Driver 2006 Cayman S, Guards Red, #11 part time track addict (sometimes #12 or #22) X-Terra, Blue Sold: 1970 911 T coupe, Bali Blue 1982 911 SC Targa, Guards Red 1974 914 2.0, Champagne Gold 1982 BMW 528e, White and rusty.. Deceased but not forgotten: 1968 911 sunroof coupe, Black 1972 VW Super Beetle, White
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#4
06-03-2015, 09:51 AM
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Len, it is pretty easy to do this...I would start with the compression test (don't need an air compressor)...then decide on doing the leakdown if needed...based on the results of your compression...follow the steps in this article...have done it a few times and works just fine...
http://www.pelicanparts.com/techarti..._rebuild-2.htm
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Tito 82 911 SC with 3.2 73 RSR project 97 328is 99 328is 97 Lexus SC300 Manual 86 TL (gone) 993 (gone) 75 911S (gone)
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#5
06-03-2015, 10:30 AM
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Quote:
Because it turns out they're all really nice in person  
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Martin 2011 Cayman S (Gone) - Hardtop Blechster 2006 Cayman S (DD) 2016 Mazda CX-5 (Her DD) 2002 Boxster S (Gone) - Ragtop Blechster - Pura Patina! Dorkiphus: I buy it for the articles
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#6
06-03-2015, 10:35 AM
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Intubator, I'm in Bowley's Quarters , Essex, Middle River Area.. I am just past Bengies Drive In, And Martin State Airport
I have an air compressor if needed, Also I will have to check with my father in-law about a compression tester. I will be home later Sunday my son has a lacrosse game at 1:00 in Westminster. Should be home after 4-5 As for a broken head stud I have not removed the valve cover I wasn't sure if I could reuse the gasket. I would appreciate your helping hand, Call me and let me know when would be best for you, Do you have a leak down tester? Thank You Len 410-294-2513
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#7
06-03-2015, 10:59 AM
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Hey Len, I have a compression tester only. I think we can do it in about an hour, and Sunday at 5pm is fine for me. If there is a low cylinder then you can look further into it regarding the causes. My 87 had a broken #3 exhaust side head stud at one point that was only apparent under moderate to full throttle. Sounded like an exhaust stud/port leak, only it was leaking between the head and cylinder. Have you been under the car to see if your exhaust studs are firm and intact??.. Hopefully its that simple..
__________________
Chris Robel Current: 1987 Carrera Targa 3.4 993SS cams, Smokey Silver Semi-Daily Driver 2006 Cayman S, Guards Red, #11 part time track addict (sometimes #12 or #22) X-Terra, Blue Sold: 1970 911 T coupe, Bali Blue 1982 911 SC Targa, Guards Red 1974 914 2.0, Champagne Gold 1982 BMW 528e, White and rusty.. Deceased but not forgotten: 1968 911 sunroof coupe, Black 1972 VW Super Beetle, White
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#8
06-03-2015, 11:13 AM
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I might be inclined to skip the compression test if I know I have a leak. The compression test will recheck a checked box. The leak down will tell what, where and how much.
__________________
http://vimeo.com/29896988 “Those that can make you believe in absurdities can make you commit atrocities.” Voltaire. "There is grandeur in this view of life...." Darwin. The mountains are calling and I must go. “The earth has music for those who listen” Shakespeare. You Matter. (Until you multiply yourself times the speed of light squared. Then you Energy) “We’ve got lots of theories, we just don’t have the evidence’.
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#9
06-03-2015, 11:21 AM
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Quote:
__________________
Chris Robel Current: 1987 Carrera Targa 3.4 993SS cams, Smokey Silver Semi-Daily Driver 2006 Cayman S, Guards Red, #11 part time track addict (sometimes #12 or #22) X-Terra, Blue Sold: 1970 911 T coupe, Bali Blue 1982 911 SC Targa, Guards Red 1974 914 2.0, Champagne Gold 1982 BMW 528e, White and rusty.. Deceased but not forgotten: 1968 911 sunroof coupe, Black 1972 VW Super Beetle, White
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#10
06-03-2015, 11:47 AM
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When I removed the fan housing I noticed there was some oil build up where the cylinder and heads meet. I can hear a leak when I am driving down the road against a concrete barrier wall. I can hear it bouncing off the wall... I forgot I have a leak tester here at work for gear boxes but will need to get an adapter to screw into the sparkplug hole. Right now it has quick disconnects on each end..
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