Engine Not Firing!!!

1. chunkyblader Regular Poster Joined: Jul 2010 Braintree Posts: 374 Mk1 97 Saxo VTR

   #1 12th January 2011, 15:30

   Basicly the alternator belt snapped, so i have replaced that but the engine will not fire... everything is going (THE ENGINE IS TURNING!)...
   
   also the cam belt/ timing belt is fine...
   
   any ideas why it mite not fire???
   
   thankyou
2. chunkyblader Regular Poster Joined: Jul 2010 Braintree Posts: 374 Mk1 97 Saxo VTR

   #2 12th January 2011, 15:42

   bump!!!
3. user_20080 Saxperience Hardcore! Joined: Dec 2007 smurfland. Posts: 17346 Ex saxo owner.

   #3 12th January 2011, 15:42

   Crank sensor faulty or loose?
   
   Steve.

   1 user thanked this post: Krys_23
4. chunkyblader Regular Poster Joined: Jul 2010 Braintree Posts: 374 Mk1 97 Saxo VTR

   #4 12th January 2011, 15:48

   the alternator belt is going round... and i spose thats powerd by the crank... so i spose that its ok
5. user_36198 Saxperience Post Whore Joined: Aug 2009 ilkeston derbyshire Posts: 9823 C2 VTR stripped, 406hdi, clio 172

   #5 12th January 2011, 16:40

   have you tried pressing the red fuel cut off switch, theres a chance you may have caught it
6. chunkyblader Regular Poster Joined: Jul 2010 Braintree Posts: 374 Mk1 97 Saxo VTR

   #6 12th January 2011, 17:47

   where is this cut off switch???
7. user_36198 Saxperience Post Whore Joined: Aug 2009 ilkeston derbyshire Posts: 9823 C2 VTR stripped, 406hdi, clio 172

   #7 12th January 2011, 17:50

   up by the brake master cylinder
8. chunkyblader Regular Poster Joined: Jul 2010 Braintree Posts: 374 Mk1 97 Saxo VTR

   #8 12th January 2011, 18:04

   kk.. i'll take a look tomo morn
9. chunkyblader Regular Poster Joined: Jul 2010 Braintree Posts: 374 Mk1 97 Saxo VTR

   #9 16th January 2011, 15:59

   now there is no compression in the valves.... is there any reason for this apart from bent valves???
10. Tyanu888 Infrequent Poster Joined: May 2009 Malta Posts: 144 Citroen Saxo VTS (hill climb racer), Citroen AX Gt

    #10 16th January 2011, 19:48

    sounds more like a crank sensor! Did you check the coil though? Is fuel getting to the head?
11. chunkyblader Regular Poster Joined: Jul 2010 Braintree Posts: 374 Mk1 97 Saxo VTR

    #11 16th January 2011, 23:07

    yh there is defo fuel gettin there... we checked the fuel pump and tested it with an old battery.... what do u mean by the coil tho?
12. Saxguy Frequent Poster Joined: Feb 2010 taunton,somerset Posts: 506 Posi blue saxo vtr Gold vtr

    #12 16th January 2011, 23:16

    Quote:

    Originally Posted by chunkyblader yh there is defo fuel gettin there... we checked the fuel pump and tested it with an old battery.... what do u mean by the coil tho?

    think he means coil pack mate.
13. ryanmt Established Member Joined: Oct 2004 Warrington Posts: 1987 AX VTS 57 3.0 TDI A5

    #13 16th January 2011, 23:16

    if you have no compression then that will be the issue. Maybe the cambelt is damaged have you looked at it?
    
    
    simple test is if the fuel pump runs when the engine is turning over - if so it means your crank sensor is sending out at least some kind of signal.
    
    Take the plugs out, are they wet with petrol?
14. chunkyblader Regular Poster Joined: Jul 2010 Braintree Posts: 374 Mk1 97 Saxo VTR

    #14 16th January 2011, 23:41

    the cam belt is fine.... it sufferd abit of damage from the alternator belt snapping but i changed that today... jus looked up crank sensors but am confused about what they actually sense.... and don;t only diesels have a coil pack to help them start in the cold?
15. ryanmt Established Member Joined: Oct 2004 Warrington Posts: 1987 AX VTS 57 3.0 TDI A5

    #15 16th January 2011, 23:55

    crank sensor picks up the engines position.
    
    You are thinking glow plugs, coilpack creates the spark
16. chunkyblader Regular Poster Joined: Jul 2010 Braintree Posts: 374 Mk1 97 Saxo VTR

    #16 17th January 2011, 00:40

    okey... there is defo a spark as i took the spark plug out and it was making a spark
17. user_36198 Saxperience Post Whore Joined: Aug 2009 ilkeston derbyshire Posts: 9823 C2 VTR stripped, 406hdi, clio 172

    #17 17th January 2011, 08:37

    have you deff checked cam timing? alternator belts have a nasty habit of getting under cam belts and causing them to jump a few teeth which would explain your lack of compression
18. chunkyblader Regular Poster Joined: Jul 2010 Braintree Posts: 374 Mk1 97 Saxo VTR

    #18 17th January 2011, 18:36

    Quote:

    Originally Posted by mandyslover70 have you deff checked cam timing? alternator belts have a nasty habit of getting under cam belts and causing them to jump a few teeth which would explain your lack of compression

    thats what happend the alternator belt got into the bottom cam belt sprocket... we changed the cam belt (even tho it was fine) while cleaning the alternator belt off the sprocket... then re-timed it...
19. user_4681 Saxperience Post Whore Joined: Dec 2004 Grimsby United Kingdom (England) Posts: 5489 SUPERCHARGED saxo vts

    #19 1st February 2011, 18:31

    so with the timing checked whats the outcome? damage?