SHOWDOWN BACK SLOWER THEN EVER! Member 706 Member For: 17y 10m 17d Gender: Male Location: Sydney Posted 08/08/07 01:34 PM Share Posted 08/08/07 01:34 PM Now I had the problem on fatcory tune and now again on 8psi generic.After giving it a bootful the car idles rough, car is usually warmed up...The rough idle goes away after around a minute.I have just had the Sparkies changed and ECU update was done by ford. I hope its nothing major...Ozzie Link to comment https://www.fordxr6turbo.com/forum/topic/37320-car-idles-rough-after-giving-it-a-bootful/ Share on other sites More sharing options...
our06t Mmmmm......BOOST Member 3,135 Member For: 18y 23d Gender: Male Location: central coast Posted 08/08/07 08:33 PM Share Posted 08/08/07 08:33 PM think this is syptom of weak valve springs ,but could be throttle dirty dont think ecu updates help much if your useing a flash tuner need a good custom tune maybe Link to comment https://www.fordxr6turbo.com/forum/topic/37320-car-idles-rough-after-giving-it-a-bootful/#findComment-562509 Share on other sites More sharing options...
ENVY-T CNUTOX Donating Members 3,098 Member For: 22y 4m 15d Gender: Male Location: Not sure? Posted 08/08/07 08:57 PM Share Posted 08/08/07 08:57 PM Sounds like your valve springs maybe going soft. Link to comment https://www.fordxr6turbo.com/forum/topic/37320-car-idles-rough-after-giving-it-a-bootful/#findComment-562514 Share on other sites More sharing options...
ALF05T Member 453 Member For: 18y 4m 6d Gender: Male Location: Sydney Posted 08/08/07 09:55 PM Share Posted 08/08/07 09:55 PM Try giving it a boot full and then backing off slowely, this will proove if it is the valve springs. Link to comment https://www.fordxr6turbo.com/forum/topic/37320-car-idles-rough-after-giving-it-a-bootful/#findComment-562520 Share on other sites More sharing options...
SHOWDOWN BACK SLOWER THEN EVER! Member 706 Member For: 17y 10m 17d Gender: Male Location: Sydney Posted 08/08/07 10:50 PM Author Share Posted 08/08/07 10:50 PM When I back off slowly it problem doesn't occur.It only when I run out of street and go from flat chat to brake...oh and the car is only on 45k, will the value springs really give up already? Link to comment https://www.fordxr6turbo.com/forum/topic/37320-car-idles-rough-after-giving-it-a-bootful/#findComment-562531 Share on other sites More sharing options...
our06t Mmmmm......BOOST Member 3,135 Member For: 18y 23d Gender: Male Location: central coast Posted 08/08/07 11:38 PM Share Posted 08/08/07 11:38 PM (edited) I don't think kays has much to do with it it seems to be luck of the draw with valve springs some will hold near 3oorwkw others fade at 220rwkwshould really look into a custom tune it might fix it Edited 08/08/07 11:39 PM by our06t Link to comment https://www.fordxr6turbo.com/forum/topic/37320-car-idles-rough-after-giving-it-a-bootful/#findComment-562541 Share on other sites More sharing options...
CV PERFORMANCE Senior Member Member 139 Member For: 18y 9m 10d Gender: Male Location: Caringbah 9526-5322 Posted 08/08/07 11:53 PM Share Posted 08/08/07 11:53 PM Valve springs mate,We have seen stock car get valve spring float on the dynoCV PERFORMANCE Link to comment https://www.fordxr6turbo.com/forum/topic/37320-car-idles-rough-after-giving-it-a-bootful/#findComment-562543 Share on other sites More sharing options...
markxr6t Member 476 Member For: 20y 6m 21d Location: Perth WA Posted 09/08/07 01:09 AM Share Posted 09/08/07 01:09 AM Yup - mine would do the same with the edit (238rwkw). It was a distinctive rumble when I backed off that I thought was the diff until I stopped and realised it was a different (and rough) exhaust noise. If I kept revs under 5200 it wouldn't happen.You could try a high flow cat or exhaust to reduce back pressure as a first step and if that doesn't help new valve springs are your only option. Link to comment https://www.fordxr6turbo.com/forum/topic/37320-car-idles-rough-after-giving-it-a-bootful/#findComment-562558 Share on other sites More sharing options...
Headsex Donating Members 2,528 Member For: 19y 9m 10d Gender: Male Location: Melb Posted 09/08/07 02:41 AM Share Posted 09/08/07 02:41 AM Its not always Valve spring related..It can be 1 of 2 things.. Valve springs (been mentioned already), or Spark plugs fouling up (didnt you just say you just changed them??)what spark plugs did you put in them, and what gap did they have?My cars had valve springs done, and I've still had the issue, but I've since fixed it..danny. Link to comment https://www.fordxr6turbo.com/forum/topic/37320-car-idles-rough-after-giving-it-a-bootful/#findComment-562586 Share on other sites More sharing options...
PSYCHO XRT THE PSYCHO XRT Donating Members 1,275 Member For: 19y 5m 12d Gender: Not Telling Location: At the lights! Posted 09/08/07 03:18 AM Share Posted 09/08/07 03:18 AM Hi Ozzie,I have the same issue with my car and its definately the WEAK Valve Springs.Im getting mine done by Nizpro and im more than sure this will solve thisproblem I currently have. Link to comment https://www.fordxr6turbo.com/forum/topic/37320-car-idles-rough-after-giving-it-a-bootful/#findComment-562593 Share on other sites More sharing options...
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