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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17th December 2012, 18:57
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#1
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Regular Poster
Join Date: Jan 2010
Location: Bournemouth
Posts: 254
Car(s): Peugeot 106 GTi, Peugeot 106 1.5D, Ford Focus TD
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1000-2000 RPM Engine Knock
Hey everyone,
For the past few months my engine has begun making a slight knocking sound. Sometimes its worse than others but has steadily been getting louder recently. Most people wouldn't notice it but I do since I drive the car everyday and know how it used to sound. The car has never really run smoothly on idle and kindof misses everso slightly and when held at certain revs such as 3000 you can hear a light popping noise from the exhaust as if the engine is very slightly miss firing. The car has no loss of power however never seems to run quite right.
This knocking noise appears to be irregular and does it most between 1000-2000 RPM. Heard best at around 1700rpm. I can't hear it very much from the engine bay but can hear it better inside the car. It seemed to start after I did an oil/filters/plugs change about 2 months ago and has steadily got worse. Strange thing is it doesn't make any noise when cold and runs fine, but give it about 2 minutes and it will start a quiet knocking.
Any ideas?? Thanks
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17th December 2012, 19:09
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#2
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Newbie
Join Date: Nov 2012
Posts: 3
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bottom end, its fucked, might get away with changing the shells but you'll be better off getting a new engine
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17th December 2012, 21:03
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#3
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Frequent Poster
Join Date: Jan 2004
Location: Denny United Kingdom (Scotland)
Posts: 665
Car(s): Ford focus 2.0
Saxo VTS
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does sound like death rattle, no point changing the shells, journals will be scored will fuck the new shells in no time. rather easy to check just whip of the sump and undo the rod caps.
but as yassa said probably easier getting another engine
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17th December 2012, 22:01
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#4
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Regular Poster
Join Date: Jan 2010
Location: Bournemouth
Posts: 254
Car(s): Peugeot 106 GTi, Peugeot 106 1.5D, Ford Focus TD
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AHh great!!
Off to the crusher then. Ploughed wayy too much money into it! Piece of shit.
Last edited by djt992; 17th December 2012 at 22:10.
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18th December 2012, 02:51
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#5
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Saxperience Post Whore
Join Date: Nov 2010
Location: Kent
Posts: 8,439
Car(s): Gen 7 Celica 190.
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Sounds like its not firing on all 4 smoothly try change the coilpack..
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18th December 2012, 08:01
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#6
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Established Member
Join Date: Apr 2008
Location: Dudley
Posts: 1,634
Car(s): 106 GTI
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have you checked all the plugs are tight and gapped correctly?
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Detailing Master
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18th December 2012, 08:36
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#7
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Saxperience Post Whore
Join Date: Aug 2008
Location: The wrong carpark
Posts: 5,152
Car(s): Xantia 1.9TD
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Try coilpack and check plugs first. My vtr used to have a miss at 3k revs, really bad on motorways as you would feel it. Coilpack eventually shat itself
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18th December 2012, 09:29
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#8
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Frequent Poster
Join Date: Aug 2008
Location: ESSEX
Posts: 727
Car(s): 106 GTi Turbo
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take it to a local garage and have a mechanic inspect it/listen to it first.
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18th December 2012, 20:33
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#9
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Regular Poster
Join Date: Jan 2010
Location: Bournemouth
Posts: 254
Car(s): Peugeot 106 GTi, Peugeot 106 1.5D, Ford Focus TD
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Thanks for all the replies. Probably best I get a garage to look so I'm taking it to Ktech tomorrow to see what they make of it. I'll get back with an update soon.
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18th December 2012, 20:57
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#10
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Newbie
Join Date: Dec 2012
Posts: 10
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make sure the plugs are tight my vtr and my vts have a habbit of spiting plugs now and then after a good thrashing on the track
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22nd December 2012, 20:02
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#11
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Regular Poster
Join Date: Jan 2010
Location: Bournemouth
Posts: 254
Car(s): Peugeot 106 GTi, Peugeot 106 1.5D, Ford Focus TD
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Quick update:
Have since taken my car to k-tech for them to have a listen and they couldn't identify what the noise was since it was so quiet. They said I have a missfire going on though and can hear it running badly from the exhaust sound.
I have since tried changing the spark plugs and coil pack with no change :/
I also mentioned to them that when I had my MOT a while back, my emissions were REALLY high (3 times higher than they should be). They reckoned that its to do with fueling and that it runs smooth when cold because of the rich mixture and then starts running rough as it gets warm. They were confident it wasn't anything from the lower end.
Any ideas where to go from here? Would a faulty lambda sensor maybe cause this missfire/knocking? Or maybe a new cat?
Thanks.
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22nd December 2012, 20:18
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#12
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Saxperience Post Whore
Join Date: May 2009
Location: ringwood
Posts: 6,305
Car(s): suzuki swift 1.2 sz3
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Fucked cat and a vacuum leak. Fix them.
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22nd December 2012, 22:55
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#13
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Established Member
Join Date: Apr 2008
Location: Dudley
Posts: 1,634
Car(s): 106 GTI
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It sounds like coolant temp sensor on the thermostat housing as this comes in as the car gets warm
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Detailing Master
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22nd December 2012, 23:18
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#14
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Saxperience Forum Bum
Join Date: Sep 2011
Location: Doncaster
Posts: 2,627
Car(s): Fabia VRS, mk1 fiesta + some others
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needs B8s
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14th May 2021, 18:19
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#15
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Newbie
Join Date: Mar 2021
Posts: 1
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Quote:
Originally Posted by djt992
Quick update:
Have since taken my car to k-tech for them to have a listen and they couldn't identify what the noise was since it was so quiet. They said I have a missfire going on though and can hear it running badly from the exhaust sound.
I have since tried changing the spark plugs and coil pack with no change :/
I also mentioned to them that when I had my MOT a while back, my emissions were REALLY high (3 times higher than they should be). They reckoned that its to do with fueling and that it runs smooth when cold because of the rich mixture and then starts running rough as it gets warm. They were confident it wasn't anything from the lower end.
Any ideas where to go from here? Would a faulty lambda sensor maybe cause this missfire/knocking? Or maybe a new cat?
Thanks.
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What was the problem? The problem has been solved? If yes, can u tell me the solution?
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22nd August 2021, 23:05
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#16
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Newbie
Join Date: Aug 2021
Posts: 4
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I know this is a really old post but I would love to hear what it was too.
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24th August 2021, 16:21
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#17
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Saxperience Post Whore
Join Date: Dec 2002
Location: United Kingdom
Posts: 8,390
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this was a problem on later L4 emissions alloy blocks, cured by plastigauging and fitting slightly "oversized" upper shells.
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26th August 2021, 23:55
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#18
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Frequent Poster
Join Date: Nov 2009
Posts: 576
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Could also have been a loose spark plug, I've had that enough times with customer's cars.
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28th August 2021, 07:41
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#19
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Saxperience Forum Bum
Join Date: Jan 2003
Location: Scotland
Posts: 3,380
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Quote:
Originally Posted by Gabbastard
this was a problem on later L4 emissions alloy blocks, cured by plastigauging and fitting slightly "oversized" upper shells.
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also happenedwith some of the 1.6 cast iron engines ---same cue
to be honest it never caused a problem with engine ,just and unwanted rubble at some rpms
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28th August 2021, 09:21
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#20
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Newbie
Join Date: Aug 2021
Posts: 4
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Quote:
Originally Posted by Gabbastard
this was a problem on later L4 emissions alloy blocks, cured by plastigauging and fitting slightly "oversized" upper shells.
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I have been told this by a Citroen Master Tech. Unfortunately after I had my bearings replaced (standard size) the noise was still there as before. You seem to know your stuff, do I need to pay to have this repair redone as you described?
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