ignition timing

Chiangstar · Post by **Chiangstar** » Mon Aug 30, 2004 10:48 am

hey all
does anyone know how to alter ignition timing... since there's coilpacks and no distributor to turn, i cant figure it out... can the ignition timing be changed without playing with the computer?

cheers

simon

Post by **smorison** » Mon Aug 30, 2004 10:54 am

Chiangstar wrote:hey all
does anyone know how to alter ignition timing... since there's coilpacks and no distributor to turn, i cant figure it out... can the ignition timing be changed without playing with the computer?

cheers

simon

not safely....

the ECU is constantly monitoring the engine and changing the ignition timing to meet load / fuel quality / air density / etc...

Chiangstar · Post by **Chiangstar** » Mon Aug 30, 2004 11:00 am

so what do you do if you check ignition timing and its not on 10 btdc at idle?

perhaps there might be something wrong with the crank angle sensor?

simon

MADFTO · Post by **MADFTO** » Mon Aug 30, 2004 6:11 pm

As simon said, ECU will always modify the timing depending on a lot of variables.

Must remember, if the stated timing point is 10 BTDC, this is with 100 RON fuel . . .

That factor alone is enough to change the ignition.

Chiangstar · Post by **Chiangstar** » Mon Aug 30, 2004 6:48 pm

ok i understand that... so my problem is, my timing used to be right on 10 btdc on 98 RON and then i played around with the car a bit and now its not on 10 btdc anymore ... its slightly off and idle is a little lumpy...

the ECU can only adjust the ignition timing within certain limits... so im thinking either my crank sprocket is off a notch, theres something wrong with my crank angle sensor, or theres something wrong with my spark plugs...

any ideas?

cheers

simon

MADFTO · Post by **MADFTO** » Mon Aug 30, 2004 10:36 pm

What have you touched since =)

Has it been advanced or retarded???
I'm guessing retarded but you never know =)

Engine might be running in safe mode for some reason, have you tried an ECU reset???

If it is running in safe mode, it might be fueling related.

Probably should do the whole ground out the MUT-II plug and check if there are any engine codes floating in the system.

Honestly, without knowing if anything has changed, etc, etc it could be anything. =)

Post by **smorison** » Tue Aug 31, 2004 8:37 am

MADFTO wrote:What have you touched since =)

haha

have you changed you timing belt by any chance?????
or better yet

change spark plug leads to ones that are a different length?

Chiangstar · Post by **Chiangstar** » Tue Aug 31, 2004 10:16 am

heheh
yeah i did play with the timing belt...looks like i mustve misaligned the timing marks...

that could probly cause the ignition timing to be out couldnt it ... i was just in denial

cos i didnt wanna have to take it all apart again heheh ah well

cheers

simon

Post by **smorison** » Tue Aug 31, 2004 10:45 am

its got potentially worse problems than that... you need to look at this as a matter of urgency

Chiangstar · Post by **Chiangstar** » Tue Aug 31, 2004 1:41 pm

well its actually been like this for a while... ill do a compression test on the weekend and see if ive got bent valves or something.... not really bothering me too much at this stage... it hasnt appeared to have lost much noticable power at all... but ill sort it out soon

cheers

simon

FTO AUSTRALIA

ignition timing

ignition timing

Re: ignition timing