Ignition Timing S3
Discussion
It is basically set for life and is electronic. The timing can be adjusted a bit by playing with a connector so that it will run on unleaded.
Steve
www.tvrbooks.co.uk
Steve
www.tvrbooks.co.uk
Cheers,
That is what I thought
I do have the Bible but it is at home, what made me ask was this (taken from S3 Throttle response thread)
"Yes the problem is now fixed. There is just a hint of hesitation now but it’s far better than before and perfectly acceptable. Not entirely sure what fixed it though. Here is a list of the things I did. 1. Strip and clean air flow meters, idle control valve and throttle assembly. 2. Re set Ignition Timing to 10 deg BTDC at idle. (was 14 deg) 3. Adjust base idle to 800 rpm (throttle plates just cracked open and throttle pot reading 505 Ohms) with idle control valve disconnected. (throttle stop was fully shut at idle previously 455 Ohms) 4. Air hoses checked for leaks. 5. Fit new Ford 2.9 Granada throttle cable to correct linkage mounting with clips rather than the bodged bolt and Nylock that came from the factory. Pedal travel now longer but feels better. 6. Check throttle pot on scope OK."
and if mine is 18 deg that could account for inability to idle when cold and poor throttle response
That is what I thought
I do have the Bible but it is at home, what made me ask was this (taken from S3 Throttle response thread)
"Yes the problem is now fixed. There is just a hint of hesitation now but it’s far better than before and perfectly acceptable. Not entirely sure what fixed it though. Here is a list of the things I did. 1. Strip and clean air flow meters, idle control valve and throttle assembly. 2. Re set Ignition Timing to 10 deg BTDC at idle. (was 14 deg) 3. Adjust base idle to 800 rpm (throttle plates just cracked open and throttle pot reading 505 Ohms) with idle control valve disconnected. (throttle stop was fully shut at idle previously 455 Ohms) 4. Air hoses checked for leaks. 5. Fit new Ford 2.9 Granada throttle cable to correct linkage mounting with clips rather than the bodged bolt and Nylock that came from the factory. Pedal travel now longer but feels better. 6. Check throttle pot on scope OK."
and if mine is 18 deg that could account for inability to idle when cold and poor throttle response
quote:
Hate to disagree with Steve but I believe the ignition on the 2.9 engine is adjustable. Slacken the distributor retaining plate off slightly and twist the distributor. Worked for me.
We are not really disagreeing. The ignition is originally set using a microwave device (?) and is then sealed. It is electronic and should not need any attention during its life (100,000 miles). Ford manual paraphrasing.
If the distributor is changed then it needs resetting and then the fun can start as some state it can be done with a strobe, others say it can't. Some of the timing figures are for static other for dynamic. Static operation is tricky as you are looking for a sensor pulse. Dynamic is tricky as you need to make sure the distributor bits and pieces are disconnected.
And then the ECU can overide the settings anyway !
Generally it shouldn't be touched. Doesn't mean you can't play with it but it is not as straightforward as in olden days when you could use a bulb to work everything out...
Steve
Steve's right,
when we stripped my S3's engine and had the distributer out in doing so, it was a bit of a mere to set the timing as it did seem that the ECU was trying to do it's own thing, proberly due to the battery being disconnected and the ECU trying to re-map/re-configure itself in my case anyway.
when we stripped my S3's engine and had the distributer out in doing so, it was a bit of a mere to set the timing as it did seem that the ECU was trying to do it's own thing, proberly due to the battery being disconnected and the ECU trying to re-map/re-configure itself in my case anyway.
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