| 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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19th February 2011, 11:35
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#1
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L-plater
Join Date: Sep 2010
Posts: 35
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kent cams
hi i have just fitted kent cams unsure of which ones but now my car wont start its a 1997 vts it seems as if there is to much compression or something did get it going briefly and it was tapping but now all it does is backfire anyone have an idea what it could be ? thanks 
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19th February 2011, 11:54
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#2
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L-plater
Join Date: Mar 2009
Posts: 41
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sounds like timing, did you re do the cam belt ? as if you havent it might have slipped a tooth ?
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19th February 2011, 11:59
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#3
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L-plater
Join Date: Sep 2010
Posts: 35
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yer put a new belt on and retimed it on standard timing might just take it off and do it again to make sure
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19th February 2011, 12:02
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#4
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L-plater
Join Date: Mar 2009
Posts: 41
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have u got a haynes ? if so read it from there and yes it sounds like you may have timed it wrong
also crank the engine over with a ratchet first before you try and run it from the key as you can bend all your valves and stuff
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19th February 2011, 12:07
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#5
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L-plater
Join Date: Sep 2010
Posts: 35
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not got a haynes but got printout from auto data been turning it over with rachet valves are not touching but just seems to have a lot of compression compared to before
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19th February 2011, 12:11
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#6
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L-plater
Join Date: Mar 2009
Posts: 41
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depending in wich cams you have, it will probs make the compression a bit different as they open and close the valves longer/shorter periods of time
so that probs is to be expected but it really does sound like you have done the timing wrong as backfiring is what happens if the timing is out
well check that out and try again and let me know
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The Following User Says Thank You to dombrett1 For This Useful Post:
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19th February 2011, 12:11
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#7
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Saxperience Forum Bum
Join Date: Mar 2007
Location: 127.0.0.1
Posts: 4,826
Car(s): oem+ sax
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what profile are the cams?
It must be the timing mate, was it set up correctly
Certain cams need to be adjusted to the correct timing
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19th February 2011, 12:14
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#8
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L-plater
Join Date: Sep 2010
Posts: 35
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am not to sure all i know is there kent cams i think there 50s or 51s not to clued up when it comes to cams lol was all working did the headgasket cambelt and revalved the head put it back together and it worked then put the cams in and its a no go 
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19th February 2011, 12:16
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#9
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Saxperience Forum Bum
Join Date: Mar 2007
Location: 127.0.0.1
Posts: 4,826
Car(s): oem+ sax
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pt 50s are for standard timing iirc
Just double check the timing again and again bet there is something you've missed out.
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19th February 2011, 12:17
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#10
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L-plater
Join Date: Sep 2010
Posts: 35
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Quote:
Originally Posted by baker556
Just double check the timing again and again bet there is something you've missed out.
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er i bet there is probs be something simple as well
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19th February 2011, 12:18
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#11
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L-plater
Join Date: Sep 2010
Posts: 35
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* yer
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19th February 2011, 12:18
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#12
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Saxperience Forum Bum
Join Date: Mar 2007
Location: 127.0.0.1
Posts: 4,826
Car(s): oem+ sax
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Did you lock the fly and the cams?
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19th February 2011, 12:18
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#13
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Saxperience Forum Bum
Join Date: Mar 2007
Location: 127.0.0.1
Posts: 4,826
Car(s): oem+ sax
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The Following User Says Thank You to baker556 For This Useful Post:
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19th February 2011, 12:20
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#14
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L-plater
Join Date: Sep 2010
Posts: 35
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yes but looking at the pulleys they might be slightly out
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19th February 2011, 12:32
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#15
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Established Member
Join Date: Jun 2008
Location: nuneaton
Posts: 1,796
Car(s): LY R26
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The cams are fitted the right way round arnt they?
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19th February 2011, 12:39
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#16
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L-plater
Join Date: Sep 2010
Posts: 35
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how would i know?
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19th February 2011, 15:09
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#17
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L-plater
Join Date: Mar 2009
Posts: 41
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the only way to know is that you crank the engine over as it will hit the valves
if nothing hits then they should be correct
by the sounds of it the timing is slightly out
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19th February 2011, 17:47
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#18
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Frequent Poster
Join Date: Mar 2007
Posts: 772
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Did you put plenty of oil on the cams to help them for there first time? Crank the engine over with your ratchet and take out the spark plugs this will make it easier for when you crank it over. Just hope you have not bent the valves. 
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23rd February 2011, 12:10
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#19
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L-plater
Join Date: Mar 2009
Posts: 41
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have you had any luck with this ?
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25th February 2011, 09:56
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#20
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L-plater
Join Date: Sep 2010
Posts: 35
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not yet the cams are pct 50 ?
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