Gen 1 Ford Zetec Coil Pack Settings

[Patches]

Hi I'm having an issue with my car misfiring at load recently and its made me revisit the ignition settings.

I've got an unbranded Gen 1 Ford Zetec wasted spark coil pack which im driving with a bosch 200 style ignition amplifier. Car was mapped to 184 hp at the hubs 3 months ago and has been driving fine, dyno owner did mention that my dwell time looked a bit long but I'm having a tough time finding the data.

I'm wondering if perhaps anyone had the correct settings for this coil pack? I've got the following settings

• Ignition Mode: Wasted Spark
• Spark Edge: Falling (I think this should perhaps be rising? has been set to falling for a while and works so not sure)
• Dwell Mode: ms
• Ignition Delay: 50 us
• Spark Duration: 1ms
• Max Advance: 40.0 BTDC

Current Dwell Table: 

 

[Adamw]

Your ignition settings are all ok.

Your dwell table looks abut right, maybe a little on the weak side.  As a test put 3.0 in all the cells I highlighted below to see if the misfire goes away.

Make sure the centre pin of the ignitor has a solid ground back to the engine block.

Are you sure it is an ignition problem - are there any trigger errors or anything else showing in the log?

[Patches]

Great, I'll give that a go.

No triggering errors in the logs I have, I'll make that change and take some new logs hopefully that will fix it.

I'll double check the wiring. It's a bit of an intermittent fault, happens more often in lower gears. Car starts backfiring and losing power which i assume is an ignition problem but I'm not sure so just thought I would double check I had the right ignition/dwell settings to rule that out.

[Patches]

That seems to have fixed the issue, no misfires on the drive home, this might explain the slightly lower than expected power figure I got at the dyno a few months back.

Thanks @Adamw!