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Author engine pinking... igniton timing
cammack
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Registered: 22nd Jun 07
Location: Thame, Oxfordshire
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20th Nov 07 at 19:28   View User's Profile U2U Member Reply With Quote

im pinking! alot more than id like! anyone know how to solve this???

guess ignition timing is one way to do it? but how do you do that?

on a corsa b sri

Richardhhha
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Registered: 29th Sep 07
Location: Croydon, Greater London
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20th Nov 07 at 19:30   View User's Profile U2U Member Reply With Quote

corsa b sri thats got the x14xe engine right?

shouldnt be able to change the ignition timing (if you can would like to know how)

try using 97oct fuel and see what it does
cammack
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Registered: 22nd Jun 07
Location: Thame, Oxfordshire
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20th Nov 07 at 19:34   View User's Profile U2U Member Reply With Quote

no its the other sri, as in older 1.4 8v c14se i think! well i know actually

i have air flow modded, amd 421 manifold with stright through, just wondering how i can stop it pinking? anyone?
Vaux Lad
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Registered: 15th Dec 04
Location: Stoke-on-Trent
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20th Nov 07 at 19:42   View User's Profile U2U Member Reply With Quote

Whats the ron plug set to?

How do you know its pinking?

[Edited on 20-11-2007 by Vaux Lad]
cammack
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Registered: 22nd Jun 07
Location: Thame, Oxfordshire
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20th Nov 07 at 19:46   View User's Profile U2U Member Reply With Quote

i can hear it, lol! wel ive tried both ways round, and doesnt seem to make alot of difference to be honest.
cammack
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Registered: 22nd Jun 07
Location: Thame, Oxfordshire
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20th Nov 07 at 19:57   View User's Profile U2U Member Reply With Quote

any ideas anyone???
Dave A
USER UNDER INVESTIGATION - DO NOT TRADE

Registered: 10th Dec 03
Location: County Durham
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20th Nov 07 at 20:03   View User's Profile U2U Member Reply With Quote

how do you know its pinking? is it just pinking under load or throughout the revs and at idle?

pinking can be caused by lots of things, ignition timing wont make it stop pinking as pinking isnt related to the timing of the spark in any way.
cammack
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Registered: 22nd Jun 07
Location: Thame, Oxfordshire
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20th Nov 07 at 20:07   View User's Profile U2U Member Reply With Quote

mm i see, its pinking under load....

have also been told my my mate who builds rally cars, and he knows his stuff, just not an engine expert.

[Edited on 20-11-2007 by cammack]
Richardhhha
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Registered: 29th Sep 07
Location: Croydon, Greater London
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20th Nov 07 at 20:09   View User's Profile U2U Member Reply With Quote

does it do it at about 3,000 rpm?
cammack
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Registered: 22nd Jun 07
Location: Thame, Oxfordshire
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20th Nov 07 at 20:10   View User's Profile U2U Member Reply With Quote

roughly that ish i guess yeah, its ok in high revs but under heavy load say driving at 30, foot down in 4th it'l pink for example.....
Dave A
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Registered: 10th Dec 03
Location: County Durham
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20th Nov 07 at 20:24   View User's Profile U2U Member Reply With Quote

pinking is basicly this:

the compressed air/fuel mixture is being pre-ignited by a heat/ignition scource other than the spark plug.


detonation is very different:

the compressed air/fuel mixture is being pre-ignited by the spark plug, meaning ignition timing is too far advanced.


both can have the same effect:

sparking and igniting the air/fuel too early in the pistons stroke meaning the piston is being forced up by the crank but is being forced down at the same time by the expansion of the burning air/fuel mixture. it causes a knocking sound because the piston is 'shocked' by this and it is forced to shake inside the cylinder and cause a shockwave through the engine block. If pinking/det is loud enough to hear clearly from inside the car then it must either be really really bad or its not pinking/det.

I have seen both of the above occurances destroy engines within seconds.
cammack
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Registered: 22nd Jun 07
Location: Thame, Oxfordshire
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20th Nov 07 at 20:28   View User's Profile U2U Member Reply With Quote

well ive been told its pinking. so pretty sure it is..... how can it be solved?
Dave A
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Registered: 10th Dec 03
Location: County Durham
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20th Nov 07 at 20:29   View User's Profile U2U Member Reply With Quote

if its pinking then its being caused by something inside the cylinder igniting the air/fuel mix.


what does it sound like?
csweatherston
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Registered: 16th Jan 06
Location: Devon
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20th Nov 07 at 20:32   View User's Profile U2U Member Reply With Quote

knock sensor.
cammack
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Registered: 22nd Jun 07
Location: Thame, Oxfordshire
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20th Nov 07 at 20:34   View User's Profile U2U Member Reply With Quote

doesnt have a knock sensor does it? ermm..... well when under load it kinda pings, like little tings, lol!
Richardhhha
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Registered: 29th Sep 07
Location: Croydon, Greater London
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21st Nov 07 at 18:03   View User's Profile U2U Member Reply With Quote

does your car have a standared center section? as my cr started to well it sounds like someones got a very small hammer and is tapping really bloody fast on a metal table ths only happens at 3k onward and only under load if i rev gently the engine wont make this sound.
cammack
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Registered: 22nd Jun 07
Location: Thame, Oxfordshire
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21st Nov 07 at 21:20   View User's Profile U2U Member Reply With Quote

no its not standard, but its pinking. not sure really but i know its not good.
sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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22nd Nov 07 at 12:15   View User's Profile U2U Member Reply With Quote

what plugs are fitted they might have too a high heat range
csweatherston
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Registered: 16th Jan 06
Location: Devon
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22nd Nov 07 at 13:37   View User's Profile U2U Member Reply With Quote

are you sure its a c14se?...

as if its a x14nz it has a knock sensor....
..it sounds like knock sensor to me, have you had it fault coded yet?
cammack
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Registered: 22nd Jun 07
Location: Thame, Oxfordshire
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22nd Nov 07 at 17:40   View User's Profile U2U Member Reply With Quote

there is no fault code, and its defo a c14se. apparently these engines cant actually be ajusted if its timing, its just a pre set on ecu..... correct me if im wrong!

may it be air fuel mixture causing pinking?
csweatherston
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Registered: 16th Jan 06
Location: Devon
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22nd Nov 07 at 20:34   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Dave A
pinking is basicly this:
the compressed air/fuel mixture is being pre-ignited by a heat/ignition scource other than the spark plug.


detonation is very different:
the compressed air/fuel mixture is being pre-ignited by the spark plug, meaning ignition timing is too far advanced.


fail.

Pinking is almost the same as detonation.....the second description..

the first description is pre-ignition.

quote:
Originally posted by cammack
there is no fault code, and its defo a c14se. apparently these engines cant actually be ajusted if its timing, its just a pre set on ecu..... correct me if im wrong!

may it be air fuel mixture causing pinking?



could be the ignition timing too far advanced... there must be a way of retarding your ignition, weather it be mechanical or electrical.
Richardhhha
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Registered: 29th Sep 07
Location: Croydon, Greater London
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22nd Nov 07 at 20:52   View User's Profile U2U Member Reply With Quote

would be electrical by the sounds of it. looks like a remap is on its way to stop the noise.
choochoo82
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Registered: 24th Dec 06
Location: tenbury wells
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22nd Nov 07 at 23:56   View User's Profile U2U Member Reply With Quote

i have the same problem with mine ,its a 1.4 8v mpi sri , i think its down to the K&N beacuse i had a K&N on my tomcat at that did the same , i been meaning to put my airbox back on and see if im right but i can never be bothered to get it out the shed
chunky_nb
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Registered: 19th Jan 07
Location: Bridgend S.Wales
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23rd Nov 07 at 00:02   View User's Profile U2U Member Reply With Quote

love the fact that you appeal for help in the HELP section yet you wont take any answer on board and you already KNOW what the problem is!
Dave A
USER UNDER INVESTIGATION - DO NOT TRADE

Registered: 10th Dec 03
Location: County Durham
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23rd Nov 07 at 10:30   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by csweatherston

pinking is basicly this:
the compressed air/fuel mixture is being pre-ignited by a heat/ignition scource other than the spark plug.


detonation is very different:
the compressed air/fuel mixture is being pre-ignited by the spark plug, meaning ignition timing is too far advanced.


fail.

Pinking is almost the same as detonation.....the second description..

the first description is pre-ignition.






'pinking' is a term used to describe 'PRE IGNITION' and 'DET' or 'KNOCK' are terms used to describe detonation. Come back when you are a qualified EFI technician and try and fail me

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