Dysard Member 12 Member For: 19y 2m 24d Posted 10/04/10 11:54 AM Share Posted 10/04/10 11:54 AM I have a stock BA I XR6T with 75k on the clock and very recently the car was misfiring badly when it reached 2500rpm... I changed plugs and gapped them to 0.8. This fixed the misfire at 2500rpm but then started missing slightly on idle. It's irregular and doesn't happen all the time, just a slight miss every so often when waiting at the lights.I changed all 6 coil packs thinking that it's a dodgy coil(had a Ford tech show me that cyl 2 had the misfire on it initially when diagnosing the miss at 2500rpm), but replacing the coils seemed to have done nothingI have cleaned the throttle body and it's idling smoother but still missing. Anyone got any ideas? Cheers Link to comment https://www.fordxr6turbo.com/forum/topic/67479-slight-irregular-misfire-when-idling/ Share on other sites More sharing options...
BensXR6T Member 478 Member For: 16y 3m 19d Gender: Male Location: Burpengary QLD Posted 10/04/10 11:58 AM Share Posted 10/04/10 11:58 AM Gapping the plugs to 0.8 causes popping and slight misfires at idle. Stock car should be happy to run at 1.0mm gap Link to comment https://www.fordxr6turbo.com/forum/topic/67479-slight-irregular-misfire-when-idling/#findComment-999383 Share on other sites More sharing options...
Dysard Member 12 Member For: 19y 2m 24d Posted 10/04/10 12:16 PM Author Share Posted 10/04/10 12:16 PM I'm gonna regap them to 1 and give that a go. Cheers. Link to comment https://www.fordxr6turbo.com/forum/topic/67479-slight-irregular-misfire-when-idling/#findComment-999390 Share on other sites More sharing options...
ratter Member 6,793 Member For: 18y 10m 29d Gender: Male Location: @ my laptop Posted 11/04/10 12:27 AM Share Posted 11/04/10 12:27 AM as mentioned, if standard use the standard plug gap. Link to comment https://www.fordxr6turbo.com/forum/topic/67479-slight-irregular-misfire-when-idling/#findComment-999450 Share on other sites More sharing options...
Dysard Member 12 Member For: 19y 2m 24d Posted 11/04/10 02:47 AM Author Share Posted 11/04/10 02:47 AM Regapped to 1mm and misfire is gone. Cheers for the help Link to comment https://www.fordxr6turbo.com/forum/topic/67479-slight-irregular-misfire-when-idling/#findComment-999479 Share on other sites More sharing options...
ratter Member 6,793 Member For: 18y 10m 29d Gender: Male Location: @ my laptop Posted 11/04/10 06:40 AM Share Posted 11/04/10 06:40 AM regapping iridium or platinum plugs will cause the plug life to be shortened Link to comment https://www.fordxr6turbo.com/forum/topic/67479-slight-irregular-misfire-when-idling/#findComment-999549 Share on other sites More sharing options...
BFHOON Donating Members 1,932 Member For: 19y 1m 1d Gender: Male Location: nsw Posted 11/04/10 07:18 AM Share Posted 11/04/10 07:18 AM I have found the 0.8 gap and a slightly higher idle eliminates the miss. Link to comment https://www.fordxr6turbo.com/forum/topic/67479-slight-irregular-misfire-when-idling/#findComment-999565 Share on other sites More sharing options...
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