wilkorangerover Posted April 2, 2008 Share Posted April 2, 2008 hi, my supra bpu auto runs fine, but when under load it misses took plugs out and they were black, any ideas please Quote Link to comment Share on other sites More sharing options...
matt k Posted April 2, 2008 Share Posted April 2, 2008 Change plugs and see if it still misses. Quote Link to comment Share on other sites More sharing options...
Guest coldflame Posted April 2, 2008 Share Posted April 2, 2008 sounds like coil packs to me Quote Link to comment Share on other sites More sharing options...
wilkorangerover Posted April 2, 2008 Author Share Posted April 2, 2008 i did have iridium plugs but had to change them as they werent the right ones for bpu, (plus it was missing underload), so i put copper ones in , it cured it for a little while , i think these copper ones have done about 1500 miles Quote Link to comment Share on other sites More sharing options...
wilkorangerover Posted April 2, 2008 Author Share Posted April 2, 2008 how do you test coil packs? Quote Link to comment Share on other sites More sharing options...
Guest coldflame Posted April 2, 2008 Share Posted April 2, 2008 that 1 i dont no all i did was take a block out at at a time stick the plug in the end and see what the spark was like and one of them was weak so i tryed a differant plug still the same so i changed the pack job done Quote Link to comment Share on other sites More sharing options...
wilkorangerover Posted April 2, 2008 Author Share Posted April 2, 2008 aha i see are they big spark? Quote Link to comment Share on other sites More sharing options...
Guest coldflame Posted April 2, 2008 Share Posted April 2, 2008 not realy but i could tell the differace in the pack that was buggered Quote Link to comment Share on other sites More sharing options...
matt k Posted April 2, 2008 Share Posted April 2, 2008 When you say BPU do you have anything controlling the fuelling as the car could be massively overfuelling, hence killing plugs so quickly. Quote Link to comment Share on other sites More sharing options...
Wez Posted April 2, 2008 Share Posted April 2, 2008 What boost are you hitting? Quote Link to comment Share on other sites More sharing options...
wilkorangerover Posted April 2, 2008 Author Share Posted April 2, 2008 hks fcd, walbro fuel pump, just been out tonight and it was sweet, so it must be intermittent Quote Link to comment Share on other sites More sharing options...
matt k Posted April 2, 2008 Share Posted April 2, 2008 hks fcd, walbro fuel pump, just been out tonight and it was sweet, so it must be intermittent I would invest in an AFR gauge just to see if ther is a fuelling problem. Quote Link to comment Share on other sites More sharing options...
wilkorangerover Posted April 2, 2008 Author Share Posted April 2, 2008 just been out tonight booting it and no problem, i cant understand it Quote Link to comment Share on other sites More sharing options...
Sheefa Posted April 3, 2008 Share Posted April 3, 2008 I would invest in an AFR gauge just to see if ther is a fuelling problem. Wise idea. Personally, I think all BPU Supes and of course singles should have one. Innovative or AEM. Quote Link to comment Share on other sites More sharing options...
Homer Posted April 3, 2008 Share Posted April 3, 2008 As Wez says, what boost are you seeing? What did you gap the plugs to? Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted April 3, 2008 Share Posted April 3, 2008 As the guys have suggested it could be a number of problems, the heat range which hasn't been mentioned yet could also be worth checkin now you have gone BPU as well as electrical problems as not firing correctly can have the same effect? do you know the part number of the plug? and also when you say the tip are black....do you mean fouled, are they dry and sooty, or wet/sticky and matt colour Quote Link to comment Share on other sites More sharing options...
wilkorangerover Posted April 3, 2008 Author Share Posted April 3, 2008 1.2 bar iam ordering these plugs BKR8EIX are these ok???? Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted April 3, 2008 Share Posted April 3, 2008 1.2 bar iam ordering these plugs BKR8EIX are these ok???? I would get BKR7ES, these are fine and gapping is 0.9mm Also the BK8R are irridium and not sure if they will be sufficient Quote Link to comment Share on other sites More sharing options...
wilkorangerover Posted April 3, 2008 Author Share Posted April 3, 2008 my local supplier cant get them, is there anything else?? Quote Link to comment Share on other sites More sharing options...
wilkorangerover Posted April 3, 2008 Author Share Posted April 3, 2008 NGK - BCPR7ES (3330) - gap 0.7mm they have these Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted April 3, 2008 Share Posted April 3, 2008 NGK - BCPR7ES (3330) - gap 0.7mm they have these They are fine mate...might need to adjust the gap slightly, change them every service, there cheap enough gap tp 0.9mm Quote Link to comment Share on other sites More sharing options...
wilkorangerover Posted April 3, 2008 Author Share Posted April 3, 2008 should nt the gap be 0.7??? Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted April 3, 2008 Share Posted April 3, 2008 should nt the gap be 0.7??? how comes?? thats the factory preset gap, you want then gapped to 0.9mm really here http://www.mkivsupra.net/vbb/showthread.php?t=41927 Quote Link to comment Share on other sites More sharing options...
wilkorangerover Posted April 3, 2008 Author Share Posted April 3, 2008 it says 0.7 , for upto 1.3 bar i am 1.2 0.9 for upto 1 bar Quote Link to comment Share on other sites More sharing options...
wilkorangerover Posted April 5, 2008 Author Share Posted April 5, 2008 the new plugs have sorted it!! looks like they dont last long then Quote Link to comment Share on other sites More sharing options...
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