nazzurro19 Posted July 25, 2010 Share Posted July 25, 2010 after todays rolling road i got told my spark plug gap may be the problem why i cant boost properly ive got a feeler gauge so i will measuer the distance but problem is after searching on here i cant find the answer - how far should the gap be ? Quote Link to post Share on other sites
Lukew360 Posted July 26, 2010 Share Posted July 26, 2010 I did mine a few weeks ago, I'm pretty sure it was 0.8 or 0.9. Quote Link to post Share on other sites
Taggy Posted May 12, 2011 Share Posted May 12, 2011 I know this is an old post but i have the same problem, my car is now misfiring badly since i have cranked the boost up from 0.6bar to 1bar on the TD04. It only misfires on boost.Did you manage to fix this, was it the spark plug gap?I did mine a few weeks ago, I'm pretty sure it was 0.8 or 0.9. Quote Link to post Share on other sites
lukEp Posted May 12, 2011 Share Posted May 12, 2011 Air as it is is an insulator so the more you have in your cylinders the more resistance it creates, it could be the gap but more likely the leads ahave started to break down or dizzy and rota cap needs replacing, check king lead for rubbing on intercooler pipe. Quote Link to post Share on other sites
GTnomez Posted May 12, 2011 Share Posted May 12, 2011 Boost blows out the spark.I run .6 of a gap on mine, always have done especially after i had this problem. Quote Link to post Share on other sites
nazzurro19 Posted May 12, 2011 Author Share Posted May 12, 2011 yeah taggy i got it sorted i just brought new plugs and leads and worked a treat lol Quote Link to post Share on other sites
BenV Posted May 12, 2011 Share Posted May 12, 2011 ^ i agree with nomez, i run 0.6 on all my cars and the customers car and dont have any problem with the spark getting blown out Quote Link to post Share on other sites
Taggy Posted May 12, 2011 Share Posted May 12, 2011 Just gapped the plugs to the toyota specs of 0.8mm and it now works a treat , they were more like 1.2mm! which i think is the standard spec out of the factory Problem solved!^ i agree with nomez, i run 0.6 on all my cars and the customers car and dont have any problem with the spark getting blown out Quote Link to post Share on other sites
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