Important! : If you own a brake servo valve please read:

1. Graphotism Newbie Joined: Jan 2011 Posts: 6

   #1 2nd April 2011, 11:31

   Little red adjustable valve was installed in the brake servo pipe when I purchased my saxo.
   Never paid any attention to it but have fiddled with it...
   
   If you know how they work please please inform me as I have a pretty bad problem with my engine (fault P0300) and can't find the problem but have a feeling the problem could be caused by this little valve....
   
   
   
   Any help welcomed!
2. tom_lloyd_4 Regular Poster Joined: Nov 2010 alton hampshire Posts: 348 97 mk1 vtr 85 LR 90

   #2 2nd April 2011, 11:51

   take it out and get a joiner they are crap
3. danny-vts Saxperience Post Whore Joined: Dec 2010 Chesterfield/Nottingham Posts: 7147 dead vts. twisted 106 gti. '03' vtrrrr

   #3 2nd April 2011, 11:53

   is your engine management light lit up on the dash?
4. danny-vts Saxperience Post Whore Joined: Dec 2010 Chesterfield/Nottingham Posts: 7147 dead vts. twisted 106 gti. '03' vtrrrr

   #4 2nd April 2011, 11:55

   Quote:

   Originally Posted by tom_lloyd_4 take it out and get a joiner they are crap

   very helpful!!
5. Barry123 Saxperience Hardcore! Joined: Oct 2005 Aycliffe Posts: 32205 Saxo VTS

   #5 2nd April 2011, 11:55

   Which pipe is this installed on to exactly...?
   
   The fault code is an engine code... so like air leaks, misfires, injector faults etc.
   
   EDIT: just did a search... Multiple misfire fault.
   
   Could be coilpack?
6. danny-vts Saxperience Post Whore Joined: Dec 2010 Chesterfield/Nottingham Posts: 7147 dead vts. twisted 106 gti. '03' vtrrrr

   #6 2nd April 2011, 12:03

   as adsayer has said already, code means random/multiple misfire.
   
   just pulled these off internet of what it could be...
   •Faulty spark plugs or wires
   •Faulty coil (pack)
   •Faulty oxygen sensor(s)
   •Faulty fuel injector(s)
   •Burned exhaust valve
   •Faulty catalytic converter(s)
   •Stuck/blocked EGR valve / passages
   •Faulty camshaft position sensor
7. tom_lloyd_4 Regular Poster Joined: Nov 2010 alton hampshire Posts: 348 97 mk1 vtr 85 LR 90

   #7 2nd April 2011, 12:35

   Quote:

   Originally Posted by danny-vts very helpful!!

   why is it not helpfull and was guesing he meens one of thees
   http://cgi.ebay.co.uk/Eco-Power-Boos...item20b7c13d42
8. danny-vts Saxperience Post Whore Joined: Dec 2010 Chesterfield/Nottingham Posts: 7147 dead vts. twisted 106 gti. '03' vtrrrr

   #8 2nd April 2011, 14:55

   my bad
9. Bedford126 Saxperience Post Whore Joined: Jul 2010 Morley, Leeds Posts: 8469 Civic ep3 type r powered by TDI NORTH

   #9 2nd April 2011, 15:04

   The link that he posted up has something to do with the brakes it splices into the vacuum hose for the servo for assisted braking.
   
   As he said take the valve out and get a joiner.
   
   The missfire you have is because the valve is letting too much air into the intake causing your air/fuel ratio to be lean and giving you the miss fire.
   
   So eitha replace the full hose or get a joiner to replace the valve with 2 cable ties around the hose to stop it coming loose.
10. tom_lloyd_4 Regular Poster Joined: Nov 2010 alton hampshire Posts: 348 97 mk1 vtr 85 LR 90

    #10 2nd April 2011, 15:45

    thats wot i was geting at just trying to keep it short as on my phone
11. Graphotism Newbie Joined: Jan 2011 Posts: 6

    #11 4th April 2011, 12:45

    My engine light is on yes, but not flashing. And Yeah it is a random multiple misfire, plugs, coils changed but still problem persists. Is there a chance it could be something to do with the servo valve?