Marty Posted September 16, 2007 Share Posted September 16, 2007 Noticed this the other day, it started as i was under boost (0.7bar) and only happened whilst the car was on boost, the missfire was really bad. Once i came off boost, the car drove fine. I took the plugs out, checked them, they are platinums and have only done 2k, they look fine. Had a check of all the connectors, seem ok. Anyway, have to use the car to get to work, so set off this evening, and the misfire has progressed and is happening all the time, under load. Seems ok on idle. But the car is undrivable. Im guessing the main thing it could be is a coil pack giving up, and breaking down under load? Anything else it could be? Any idea's would be much appreciated, as im stuck on my trotters until i solve the problem Link to comment Share on other sites More sharing options...
gaz1 Posted September 16, 2007 Share Posted September 16, 2007 coill pack connecters. if your going for coil packs mate as these become brittle, Link to comment Share on other sites More sharing options...
Marty Posted September 16, 2007 Author Share Posted September 16, 2007 coill pack connecters. if your going for coil packs mate as these become brittle, Ive had a quick check of these and they look ok, i'll have another look in the light tomorrow. I need to get a new set of them anyway as a few of them have broken clips, although i made sure they were still well connected. Guess i can get the new clips from mr t? Link to comment Share on other sites More sharing options...
Marty Posted September 20, 2007 Author Share Posted September 20, 2007 Thanks for all the idea's guys Fixed now anyways. My new coil packs arrived today, fitted them and yup.... IT STILL FRICKEN MISSFIRED!!!! So i have swapped my 2000mile £110 platinum plugs for a new set of £8 copper ones, and its fixed. Wont be buying any more of them plugs! They have only been seeing 0.7bar for 1200mile too, 1.1bar before that. They were gapped to 0.8mm aswel so that wasnt the prob. Link to comment Share on other sites More sharing options...
Chris Wilson Posted September 20, 2007 Share Posted September 20, 2007 If the plugs have become unusable in that mileage they are operating in a hostile environment, the mixture / timing may be wrong, or their heat range, but SOMETHING is amiss. Link to comment Share on other sites More sharing options...
Cass Posted October 10, 2007 Share Posted October 10, 2007 I have the very same drama just now When car is boosting on 2nd tubby it shudders like mad and if i ease off it boosts again. But my boost is only going to 0.6 instead of 1.2. Sometimes if i go to pull of at a junction for eg The revs just sit at idle and dont go up. My Throttle and Sub Throttle sensors are ok and Butterfly isnt sticking,so im lost on this one aswell. Link to comment Share on other sites More sharing options...
Chris Wilson Posted October 10, 2007 Share Posted October 10, 2007 Have you got Racelogic TC on it? Link to comment Share on other sites More sharing options...
Cass Posted October 10, 2007 Share Posted October 10, 2007 Nope just the Stock T/C. Ive checked all vsv's.EGCV and Actuator and vac hoses and all ok. Is this sounding the same as yours Marty? Link to comment Share on other sites More sharing options...
Marty Posted October 10, 2007 Author Share Posted October 10, 2007 I have the very same drama just now When car is boosting on 2nd tubby it shudders like mad and if i ease off it boosts again. But my boost is only going to 0.6 instead of 1.2. Sometimes if i go to pull of at a junction for eg The revs just sit at idle and dont go up. My Throttle and Sub Throttle sensors are ok and Butterfly isnt sticking,so im lost on this one aswell. Sounds different to mine im afraid Mine started just on boost, was just a missifre nothing else. I take it you've checked the gaps on your plugs etc too? Link to comment Share on other sites More sharing options...
Cass Posted October 10, 2007 Share Posted October 10, 2007 Yea mate my plugs are cool for cats (Iridiums) And Coil Pack is as if New. But im the same 0.7 bar boost and car shakes and splutter missfires. Link to comment Share on other sites More sharing options...
TurboBrett Posted November 7, 2007 Share Posted November 7, 2007 Yea mate my plugs are cool for cats (Iridiums) And Coil Pack is as if New. But im the same 0.7 bar boost and car shakes and splutter missfires. sorry to dig up another old thread but was this problem solved? Link to comment Share on other sites More sharing options...
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