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Registered
Join Date: Mar 2002
Posts: 3,563
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Compression testers?
In the process of troubleshooting my low idle/stalling condition, I decided to do a compression test on the engine to verify the internals are OK.
Is there a special, solid extension I need for these engines? The hose on the tester I bought is slightly bent, so I'm having difficulty actually getting it in at the right angle to screw into the plug hole  Very frustrating indeed  How do u guys do it? Is there a special "PORSCHE" tool 
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Merv '89 911 Turbo Cab Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition 
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12-02-2005, 05:52 PM
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Registered
Join Date: Jul 2001
Location: mt. vernon Wa. USA
Posts: 8,718
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I bought a compression tester from Sears, for $25 or so, that has a 12" long flexible hose. Works great.
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[B]Current projects: 69-911.5, Previous:73 911X (off to SanFrancisco/racing in Germany).77 911S (NY), 71E (France/Corsica), 66-912 ( France), 1970 914X (Wisconsin) 76 911S roller..off to Florida/Germany RGruppe #669 http://www.x-faktory.com/ |
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12-02-2005, 06:09 PM
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Join Date: Jan 2003
Location: Langley,B.C.
Posts: 12,009
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The flexible hose just takes a little patience, but it is the right thing to use..
Cheers
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Turn3 Autosport- Full Service and Race Prep www.turn3autosport.com 997 S 4.0, Cayman S 3.8, Cayenne Turbo, Macan Turbo, 69 911, Mini R53 JCW , RADICAL SR3 |
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12-02-2005, 06:13 PM
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Join Date: Jun 2004
Location: Rio Rancho, New Mexico
Posts: 1,325
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This is what I did to my comp gauge hose to help fit into the sparkplug hole.
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DOUG '76 911S 2.7, webers, solex cams, JE pistons, '74 exhaust, 23 & 28 torsion bars, 930 calipers & rotors, Hoosiers on 8's & 9's. '85 911 Carrera, stock, just painted, Orient Red |
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12-02-2005, 06:27 PM
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Join Date: Mar 2002
Posts: 3,563
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Finally got the hose into # 6 cylinder after much friggin around. I just hope it's not going to be so bad for the rest of them. I like what you've done above Doug. Very ingenious
 Questions: - Do I NEED to disable my fuel pumps? - Must compression tests be done on a warm engine? - How do I do a leakdown test? What type of tool/instrument is required for that? Excuse the first-time newbie questions 
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Merv '89 911 Turbo Cab Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition
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12-02-2005, 09:42 PM
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