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cubby911T's Avatar
 
Join Date: Nov 2004
Location: South Bend, IN
Posts: 488
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Question on Compression testing

Hi guys. I conducted a compression test on my 2.7 engine last night, but ran out of time before completing #6 cylinder (and what a PITA that #6 is by the way). If I go back to complete that last cylinder, can I leave all the other spark plugs in place while I test #6? Or do they all need to come out again? I wasn't sure if it mattered.

Also....after reconnecting everything last night and restarting the car, it seemed to be stumbling a lot and I could smell gas. Does this sound like I just didn't get a good connection on one of the plug wires?

thanks!

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Matt M. -- Go Irish! 1990 964 C2 Targa
"Cheap tools and no experience has taken its toll" - J.W.

Ghosts of the Past: '77 911S Targa 3.2 Conversion, '89 Carrera Coupe, '99 Boxster, '70 911T Coupe ,'80 911SC Targa, '77.5 924
Old 06-18-2008, 05:11 AM
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Join Date: Oct 2000
Location: Lincoln, NE
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Yes you can just do the one cylinder without removing the other spark plugs, just make sure you take measures to insure the engine doesn't start!

I would recheck to make sure you re-installed the plug wires in the correct order and that you got good connections on all of them.
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Kurt V
No more Porsches, but a revolving number of motorcycles.
Old 06-18-2008, 05:37 AM
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Yep, I'll make sure to unplug the CD and also the fuel pump relay....

thanks Kurt!!

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Matt M. -- Go Irish! 1990 964 C2 Targa
"Cheap tools and no experience has taken its toll" - J.W.

Ghosts of the Past: '77 911S Targa 3.2 Conversion, '89 Carrera Coupe, '99 Boxster, '70 911T Coupe ,'80 911SC Targa, '77.5 924
Old 06-18-2008, 05:49 AM
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