Saxo Engine/Performance If you're interested in tuning Saxo engines, or if you need to know something which is engine related... this is the place for you. |
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30th November 2011, 21:30
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#1
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Newbie
Join Date: Nov 2011
Posts: 13
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No Compression (all cylinders)
First of all I just want to say thank you to all that have helped me already with the searches I have already done on this site.
Car is a W reg (2000) 1.6 vtr with no engine mods at all.
The car will not start and when turned over sounds strange and few people with some knowledge said it sounded like there was no compression.
Anyway, me and dad have checked the timing (with help from this site) and all seems well there, also adjusted the tappets to correct clearances. We then carried out a compression test and got zero on all cylinders...
What could this mean?
Any help will be appreciated (apologies if i've missed anything, first post and all that).
Thanks.
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30th November 2011, 21:31
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#2
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Saxperience Hardcore!
Join Date: Oct 2008
Location: Birtley
Posts: 22,253
Car(s): VTR Turbo, 106 xsi track slag, Transit recovery, B
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is this after a rebuild?
your building a turbo arent you?
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Quote:
Originally Posted by Stissy
EDIT: i give up on you.
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Quote:
Originally Posted by Giraffe
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30th November 2011, 21:33
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#3
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Saxperience Post Whore
Join Date: Aug 2005
Location: Porthcawl
Posts: 5,726
Car(s): FQ Volvo V70R
Peugeot Partner
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How has this happened? Did it occur when driving or have after replacing/rebuilding etc..
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30th November 2011, 21:35
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#4
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Newbie
Join Date: Nov 2011
Posts: 13
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No, no turbo and no rebuild.
It went into a garage for a clutch change and came out dead... Obviously no relation to clutch and this issue, so cant point fingers at the garage... Unless you guys can tell me otherwise?
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30th November 2011, 21:36
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#5
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Saxperience Post Whore
Join Date: Aug 2009
Location: ilkeston derbyshire
Posts: 9,823
Car(s): C2 VTR stripped, 406hdi, clio 172
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sounds like cam belt has slipped or snapped
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30th November 2011, 21:40
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#6
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Newbie
Join Date: Nov 2011
Posts: 13
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Cam belt was first thought, but the timing seems to all in the right place (bolt through cam into head and allen key through head into flywheel)?
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30th November 2011, 21:41
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#7
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Saxperience Forum Bum
Join Date: Jan 2009
Location: Surrey
Posts: 2,608
Car(s): 200sx s14a
mark 1 vts
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You sure you carried out the compression test properly? seems very strange. So when you turn it over the cam and crank move as they should?
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30th November 2011, 21:42
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#8
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Saxperience Hardcore!
Join Date: Oct 2008
Location: Birtley
Posts: 22,253
Car(s): VTR Turbo, 106 xsi track slag, Transit recovery, B
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would it not start after the clutch was replaced?
are you sure the compression tester isnt fucked or not been done properly.. and its just a damaged crank sensor or earth from replacing the clutch causing it not to start?
__________________
Quote:
Originally Posted by Stissy
EDIT: i give up on you.
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Quote:
Originally Posted by Giraffe
FUCK YES. I won on the internet.
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30th November 2011, 21:42
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#9
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Newbie
Join Date: Nov 2011
Posts: 13
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block to flywheel i meant. This is stretching my basic knowledge btw, I'm not going to pretend I'm a mechanic
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30th November 2011, 21:45
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#10
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Newbie
Join Date: Nov 2011
Posts: 13
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Yes, crank and cam move as they should.
Nope, hasnt started since clutch change. Apparently crank sensor was changed in a bid to get it started, but no joy (the plastic surround around the sensor looks new, so I believe this to be true).
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30th November 2011, 21:50
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#11
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Saxperience Post Whore
Join Date: Dec 2002
Location: United Kingdom
Posts: 8,390
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Id say test the compression tester on a known good engine before progressing.
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30th November 2011, 21:52
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#12
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Saxperience Post Whore
Join Date: Aug 2005
Location: Porthcawl
Posts: 5,726
Car(s): FQ Volvo V70R
Peugeot Partner
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Ive had loss of compression twice. The first was when id bent 8 valve's and the second time was when i snapped the timing belt which also bent the valves. To my knowledge, If you lose compression it's usually a bit fucked.
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30th November 2011, 21:57
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#13
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Saxperience Hardcore!
Join Date: Oct 2008
Location: Birtley
Posts: 22,253
Car(s): VTR Turbo, 106 xsi track slag, Transit recovery, B
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tbh it sounds like the garage has done/not done something
as said test the compression tester first then report back
__________________
Quote:
Originally Posted by Stissy
EDIT: i give up on you.
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Quote:
Originally Posted by Giraffe
FUCK YES. I won on the internet.
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30th November 2011, 21:59
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#14
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Newbie
Join Date: Nov 2011
Posts: 13
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Ok, dont flame me if this was a stupid idea, but to test that the compression tester wasnt totally dead, we stuck a bicycle pump with an adapter in the hose and we got a reading. I assume a (working) engine would give more pressure than a bike pump. It didnt even flicker on the engine. Its the screw in the s plug hole type btw.
K17NEY - What caused 8 bent valves the 1st time round for you?
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30th November 2011, 22:48
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#15
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Saxperience Post Whore
Join Date: Aug 2005
Location: Porthcawl
Posts: 5,726
Car(s): FQ Volvo V70R
Peugeot Partner
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Quote:
Originally Posted by Venomvtr
Ok, dont flame me if this was a stupid idea, but to test that the compression tester wasnt totally dead, we stuck a bicycle pump with an adapter in the hose and we got a reading. I assume a (working) engine would give more pressure than a bike pump. It didnt even flicker on the engine. Its the screw in the s plug hole type btw.
K17NEY - What caused 8 bent valves the 1st time round for you?
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Doing 125mph in 4th and putting it back in 3rd.
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30th November 2011, 23:09
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#16
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Newbie
Join Date: Nov 2011
Posts: 13
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Ouch...
I'll have a further look this weekend and let you all know what I find.
If anyone has anymore ideas, please post here.
Thanks for your help so far.
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30th November 2011, 23:25
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#17
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Infrequent Poster
Join Date: Feb 2008
Posts: 212
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sounds like the garage has done something mate,replacing a clutch + non start + no compression on all x4 cylinder's = a big coincidence.
If i was you i would check the tensioner visually and time the engine up correctly checking both the cam and crank are in correct position's.
Where are you based mate? if it hasd no compression it turn's over very quickly.
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1st December 2011, 01:54
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#18
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Saxperience Post Whore
Join Date: Apr 2011
Posts: 9,100
Car(s): Amazon green VTR 16v, Inferno RS clio 182
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When you turn it over by hand, can you feel the compression? or does it just turn easily over and over with no resistance
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1st December 2011, 09:51
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#19
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Super Moderator
Join Date: Nov 2009
Location: Cambridge(ish), UK.
Posts: 10,581
Car(s): BMW 5x M50d.
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compression is just everything sealing - rings at the bottom end, valves at the top. With no compression on any cylinder, it's highly unlikely to be the rings on all cylinders, which should point you to the valves. For them all to fail at the same time, I'd be looking at the cam holding the valves open when it shouldn't be, or the valves being warped to the point where they can't seal. That can really only be cambelt or timing.
Playing devils advocate, is it possible the garage did a road test after fitting the clutch, and it died on the road test? How did they explain they were giving the car back as a non-runner??
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1st December 2011, 21:37
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#20
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Newbie
Join Date: Dec 2011
Posts: 1
Car(s): 2000 Citroen Saxo 1.1L
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hey, the thing that came to me after reading all the above, is some kind of 'gasket' or seal that may have worn and has began to leak oil, coolant (water/antifreeze) or even fuel into the combustion chamber flooding it and you cant compress liquids. check your coolant bottle is it oily ? head off ...
has it got any maintenance history ? how many miles it done ?
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