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displaying posts 1 to 21 of 21
| Author | Subject: Engine knock when hot? |
 djb
Newbie  Location: Brisbane Registered: 07 Mar 2015 Posts: 22 Status: Offline |
Post #1
Hello all,I'm getting a small amount of engine ping when my engine has reached its hottest temperatures between 90-97 degrees. As is typical with engine ping, it only occurs at low rpm, normally when I'm starting on a hill. Fuel octane I'm using is between 95-98 octane. What could be causing it? Hotspots? I'm assuming the knock sensor is working because I have no codes for it. |
 Posted 6th Apr 2016 at 02:44
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aaron6
Seasoned Pro  Location: On the sofa in maidstone Registered: 16 May 2006 Posts: 5,840 Status: Offline |
Post #2
I would say that's pretty normal. They all pink a little under load on a hill from what I've seen.________________________________________ See the sheer power and might of the lesser known burrowing owl. |
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Posted 6th Apr 2016 at 06:16
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djb
Newbie Location: Brisbane Registered: 07 Mar 2015 Posts: 22 Status: Offline |
Post #3
Cheers Aaron, yes I've been reading about it just now and there are a lot of people saying it's affecting their cars so it must be pretty standard. Especially here in Aus where it's hot as hell atm.I wonder if you can swap out the stock radiator for something that's actually decent. |
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Posted 6th Apr 2016 at 07:51
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aaron6
Seasoned Pro Location: On the sofa in maidstone Registered: 16 May 2006 Posts: 5,840 Status: Offline |
Post #4
Rig your fans to run from the air con button too unless the air con actually works that is. You could check that the plugs are okay too.________________________________________ See the sheer power and might of the lesser known burrowing owl. |
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Posted 6th Apr 2016 at 11:50
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welshpug!
Capt Pedantic  Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,839 Status: Offline |
Post #5
never had knocking from mine?!________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 6th Apr 2016 at 12:04
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aaron6
Seasoned Pro Location: On the sofa in maidstone Registered: 16 May 2006 Posts: 5,840 Status: Offline |
Post #6
Pinking. Not ever? ________________________________________ See the sheer power and might of the lesser known burrowing owl. |
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Posted 6th Apr 2016 at 13:16
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cully
Seasoned Pro  Location: Cullompton Registered: 12 Jun 2013 Posts: 1,093 Status: Offline |
Post #7
mine dont pink or knock! |
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Posted 6th Apr 2016 at 14:03
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Ben_W
Formerly gpm  Location: Lutterworth Registered: 01 Sep 2007 Posts: 2,941 Status: Offline |
Post #8
They shouldn't pink or knock. I thought they had anti knock sensors to.prevent this?________________________________________ Cherry Red Rallye .... On going OEM spec restoChina Blue GTi6 .... Weekend toy Black 208 GTi .... Wife's car now Silver BMW 550i.... The executive missile |
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Posted 6th Apr 2016 at 15:23
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,768 Status: Offline |
Post #9
Yep, if it's knocking/pinking something isn't right.________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone  |
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Posted 6th Apr 2016 at 15:31
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mocinim
Seasoned Pro  Location: The Darkside of bedford :) Registered: 09 Jan 2015 Posts: 2,307 Status: Offline |
Post #10
Try some different oils see if it stops ________________________________________ BLACK RALLYE - phoenixWHITE RALLYE - valliant http://public.servicebox.peugeot.com/ https://www.gov.uk/check-mot-history |
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Posted 6th Apr 2016 at 15:33
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,839 Status: Offline |
Post #11
oil will not stop it.________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 6th Apr 2016 at 15:38
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mocinim
Seasoned Pro Location: The Darkside of bedford :) Registered: 09 Jan 2015 Posts: 2,307 Status: Offline |
Post #12
welshpug! wrote: oil will not stop it. Whats likely to cause it Mei ________________________________________ BLACK RALLYE - phoenixWHITE RALLYE - valliant http://public.servicebox.peugeot.com/ https://www.gov.uk/check-mot-history |
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Posted 6th Apr 2016 at 15:59
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cully
Seasoned Pro Location: Cullompton Registered: 12 Jun 2013 Posts: 1,093 Status: Offline |
Post #13
heat, fueling, timing, carbon build up |
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Posted 6th Apr 2016 at 20:00
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adam b
Seasoned Pro  Location: The Nam Registered: 24 Jan 2006 Posts: 12,828 Status: Offline |
Post #14
Mine does a bit on 95 octane fuel________________________________________ Nothing to see here |
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Posted 6th Apr 2016 at 20:11
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mocinim
Seasoned Pro Location: The Darkside of bedford :) Registered: 09 Jan 2015 Posts: 2,307 Status: Offline |
Post #15
cully wrote: heat, fueling, timing, carbon build up So what in the engine is actually making the ping whats contacting what is it block expansing trapping pistons worn bearings loose shafts etc etc ??? ________________________________________ BLACK RALLYE - phoenixWHITE RALLYE - valliant http://public.servicebox.peugeot.com/ https://www.gov.uk/check-mot-history |
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Posted 6th Apr 2016 at 21:17
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prism7guy
Seasoned Pro  Location: DoncastAAAAARGH Registered: 13 Jan 2008 Posts: 4,640 Status: Offline |
Post #16
It's the fuel/air mix ignighting before it should, which is bad news.________________________________________ Goldie the track car. |
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Posted 6th Apr 2016 at 22:51
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pete_rallye
Seasoned Pro  Location: Yorkshire Registered: 12 Dec 2002 Posts: 5,253 Status: Offline |
Post #17
Never known one to pink either! If it's really hot you can try running hotter plugs (or check yours are in good nick) but I would suspect something else is amiss, check fuel pressure, compression and leak down if you have the gear. If they are all ok it could be a dodgy lambda running the engine leaner than it should be, get a garage to check your emissions and make sure its somewhere near what it should be. ________________________________________ Oulton Park in a BTCC 306 vid 1Oulton Park in a BTCC 306 vid 2 Lap of the 'ring |
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Posted 6th Apr 2016 at 23:04
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djb
Newbie Location: Brisbane Registered: 07 Mar 2015 Posts: 22 Status: Offline |
Post #18
How easy is fuel pressure to test if I have my own gauge? |
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Posted 7th Apr 2016 at 06:04
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cully
Seasoned Pro Location: Cullompton Registered: 12 Jun 2013 Posts: 1,093 Status: Offline |
Post #19
prism7guy wrote: It's the fuel/air mix ignighting before it should, which is bad news. this!  |
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Posted 7th Apr 2016 at 06:28
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djb
Newbie Location: Brisbane Registered: 07 Mar 2015 Posts: 22 Status: Offline |
Post #20
Just an update, I filled up with 98 instead of 95 and so far I haven't heard it ping yet. It must be the s**t Aussie fuels. |
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Posted 8th Apr 2016 at 09:53
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mik
Seasoned Pro  Location: Kent Registered: 17 Feb 2011 Posts: 2,100 Status: Offline |
Post #21
On a hot day pinking is more likely, and you have a few of those up in Queensland. Higher octane fuel is a good idea in that case. ________________________________________ Cherry Rallye SOLD |
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Posted 8th Apr 2016 at 14:57
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