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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20th February 2009, 13:07
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#1
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L-plater
Join Date: Feb 2008
Posts: 36
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How can I tell if my car is misfiring?
I posted here a couple of months ago that my car judders back and forth when driving...this happens randomly, sometimes not at all if I drive and it can happen when I drive later during the day.
Some users here suggested it may be an engine mount, the garages don't seem to notice anything wrong. So is it possible it may be misfiring or something along those lines?
Here are the symptoms of my car:
- Judders back and forth when driving and stationary
- Opening bonnet I can see the rocker cover box vibrates now and again which causes the car to judder
- Opening the gas value under the bonnet...the engine moved towards me then back to its normal position once I put back the gas valve.
- The rev meter works fine.
- When the car is stationary I can feel the car vibrating very slighhtly.
- When driving at high speed the seems to be little or no judder, the car judders more at lower speeds.
Any other things I should check would be helpful, thanks. So is this a misfire, mount or something else?
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20th February 2009, 20:24
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#2
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Frequent Poster
Join Date: Jan 2009
Location: Whitehaven
Posts: 581
Car(s): Saxo Vts Turbo Audi A3 Peugeot 106 gti
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checked the coil pack and plugs are clean and tight?
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20th February 2009, 20:46
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#3
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Regular Poster
Join Date: Sep 2008
Location: Basingstoke
Posts: 302
Car(s): 1) 106 1.1 2) SAXO Westcoast
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If it misfires, you really will notice it. If your driving along in gear, the whole car will shake. When my car miss fired it was becuase the coilpack had water in it.....
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20th February 2009, 22:15
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#4
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L-plater
Join Date: Feb 2008
Posts: 36
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Quote:
Originally Posted by bigcalturbo
checked the coil pack and plugs are clean and tight?
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Nope, I have no idea where to find those unfortunately.
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20th February 2009, 22:17
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#5
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Frequent Poster
Join Date: Jan 2009
Location: Angus
Posts: 668
Car(s): 02 Saxo Vts
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Quote:
Originally Posted by -ED-
If it misfires, you really will notice it. If your driving along in gear, the whole car will shake. When my car miss fired it was becuase the coilpack had water in it.....
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............
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20th February 2009, 22:23
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#6
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Frequent Poster
Join Date: Jan 2009
Location: Angus
Posts: 668
Car(s): 02 Saxo Vts
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how bad is this judder and where u feeling it from? e.g just the steering wheel?
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20th February 2009, 22:27
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#7
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Frequent Poster
Join Date: Jan 2009
Location: Whitehaven
Posts: 581
Car(s): Saxo Vts Turbo Audi A3 Peugeot 106 gti
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what car is it? what engine is it?
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20th February 2009, 23:10
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#8
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Infrequent Poster
Join Date: Mar 2007
Location: blackpool
Posts: 134
Car(s): 106 gti 1.6 16v
106 quiksilver 1.4 8v
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shoot it and if you miss your misfiring.....
bit more grown up checked the spark plugs, coil pack??
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21st February 2009, 00:42
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#9
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L-plater
Join Date: Feb 2008
Posts: 36
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Quote:
Originally Posted by GoGs_MacAulay
how bad is this judder and where u feeling it from? e.g just the steering wheel?
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No...I can feel it when I sit in my driving seat.
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21st February 2009, 00:42
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#10
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L-plater
Join Date: Feb 2008
Posts: 36
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Quote:
Originally Posted by bigcalturbo
what car is it? what engine is it?
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VTR 1.6, 2001 (Y reg)
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21st February 2009, 01:13
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#11
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Established Member
Join Date: Aug 2008
Location: Derby
Posts: 2,376
Car(s): Saxo VTw ?
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mine does this randomly sometimes too.. usually when i am de-celerating...
good service should fix or what?
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Spec : Lowered 60mm - Scorpion 4" Backbox - Supersprint Race Section - Devil 4 2 1 Manifold - PiperCross X Induction -
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21st February 2009, 01:31
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#12
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Established Member
Join Date: Nov 2006
Location: ower ere
Posts: 1,282
Car(s): shitroen spaxo vts
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very difficult to diagnose without seeing the car but from the way you describe the fault it sounds like it could be the engine mount on the drivers side under the ecu. (usually the bolt that goes into it from the bottom snaps).
a diagnostic check should show a misfire up.
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21st February 2009, 01:58
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#13
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Frequent Poster
Join Date: Jan 2009
Location: Whitehaven
Posts: 581
Car(s): Saxo Vts Turbo Audi A3 Peugeot 106 gti
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you can normally tell on idle if you slowly press the accelerator you can norally tell the change in tone
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21st February 2009, 07:14
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#14
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Infrequent Poster
Join Date: Feb 2009
Posts: 111
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It does sound like a misfire to me. Main culprits are likely to be sparkplugs, HT leads or coil packs.
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22nd February 2009, 14:46
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#15
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Newbie
Join Date: Feb 2009
Location: Cork, Ireland
Posts: 10
Car(s): Ha ha well my first car the good ol peugeot 205, t
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check the coil pack i had same problem even ticking over the engine shaking well the whole car no power and if you are reving it give the pedal quick bursts u will notice it wont rev properly
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17th December 2009, 20:03
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#16
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Newbie
Join Date: Nov 2009
Location: halesowen
Posts: 2
Car(s): citroen saxo furio 1.4
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i have the same problem with me 1.4i saxo, iv changed the 4 spark plugs and changed the coil pack for a vtr one and still have the same problem bit confused on what to do my car sound like a f**kin hellicopter LOL any ideas???
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17th December 2009, 20:56
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#17
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Frequent Poster
Join Date: Nov 2009
Location: Hull
Posts: 983
Car(s): 01' Ph1 VTS
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Check coil pack, HT leads, plug caps if all fails turn to timing! but i highly doubt timing if its still running imo
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17th December 2009, 21:21
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#18
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Established Member
Join Date: Dec 2009
Location: Essex
Posts: 1,006
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Check your plug gaps.
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17th December 2009, 23:24
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#19
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Regular Poster
Join Date: May 2008
Location: Stoke on Trent
Posts: 421
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sounds like one of the sensors in the t.b to me. give everythign a clean ad replace your sparkplugs just to be sure see if that helps at all.
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