Luckily I own two Insights and recently one played up badly with the herky jerky lean burn at low speeds. I tried the EGR cleaning techniques discussed here, soaking in wd40 and operating valve etc. But sadly this made no difference. I swapped the valve with the one from the other Insight and problem resolved. Now just need to order a new one from local UK Honda dealer, and for info the price here is £190.00! Just have to bite the bullet and pay up. I will open up the old one and post a few photos. I doubt it can be repaired. Regards and thanks for all the info on this site.