no compression

1. 1-1dicky Frequent Poster Joined: Nov 2009 maidstone Posts: 702 saxo vtr

   #1 15th August 2010, 13:51

   its not a saxo but still french, iv got a 309 goodwood gti and one of my cylinders has no compression! omeone said it could be head gasket, if a headgasket has gone would it really result in no compression?
   
   thanks
2. user_16747 Banned Joined: Jul 2007 Posts: 4328

   #2 15th August 2010, 14:00

   yes it will as it pressure will just blow past and in to the next cylinder
   
   any other symptoms??
   
   have you tried doing the compression test with a spot of oil down the bores?
3. 1-1dicky Frequent Poster Joined: Nov 2009 maidstone Posts: 702 saxo vtr

   #3 15th August 2010, 15:38

   there are a lotof things, smoke pours out from where you put oil in it. and spits oil out the dip stick and smoke comes from there too, leaks oil from somewhere but dont know where no compression on one of the cylinders.
4. user_36198 Saxperience Post Whore Joined: Aug 2009 ilkeston derbyshire Posts: 9823 C2 VTR stripped, 406hdi, clio 172

   #4 15th August 2010, 15:55

   don't waste time compression testing, get the head off lol. either head gasket or rings have gone allowing compression gases to escape into the crankcase, pressurizing it and blowing the oil out.
5. jware92 Frequent Poster Joined: Feb 2009 Colwyn Bay/Southend Posts: 608 Mk2 vts VXR engined astra

   #5 15th August 2010, 16:40

   bent valve could cause no compresion?
6. devilsadvocate Saxperience Post Whore Joined: Dec 2006 Maidstone Posts: 8210 Golf TDI

   #6 15th August 2010, 17:59

   As above, head needs to come off to see what the issue is.
   
   Best case scenario is the head gasket to be honest
7. user_36198 Saxperience Post Whore Joined: Aug 2009 ilkeston derbyshire Posts: 9823 C2 VTR stripped, 406hdi, clio 172

   #7 15th August 2010, 18:21

   Quote:

   Originally Posted by jware92 bent valve could cause no compresion?

   wouldn't cause crankcase pressure though
8. shannon6460 Regular Poster Joined: Apr 2009 Swansea Posts: 426 Too many to list but all the Paxo related one's ar

   #8 15th August 2010, 21:10

   sounds like the rings get the head off would be the best option
9. DansexysaxoVTS Regular Poster Joined: Oct 2009 Ipswich Suffolk Posts: 355 saxo vts

   #9 15th August 2010, 21:32

   i would say pistion rings have gone take the head off
10. Quick Saxperience Post Whore Joined: Mar 2003 United Kingdom (England) Posts: 7064

    #10 15th August 2010, 23:37

    Mi-16, Gti-6, or 206 Gti 180 time!