I was one of those who mentioned of the innova choking problems over at the biodiesel rulez thread here. I did mention that in my biodiesel fuel economy results thread but in kotse.com site.

At the cold start, the car wont maintain its idling, namamatay, you have to rev it high for a while or else mamatay ang makina. When its warm, wala ang problema. I've been using 1% estrol for almost 2,000km when it happened. I thought it had something to do with my findings with contaminated biodiesel. But before I was able to bring it in to the casa, I had the fuel filter checked by my inhouse motorpool, kasi takot ako na pagmaymakita sa casa related to biodiesel, baka ma void ang warranty. When my chief mechanic inspected the filter, he noticed it was loose, and may have allowed air into the system. He continued to check the filter and found it clean. Inspected the fuel that passes through the filter and found it clear. Reinstalled the primary spin on fuel filter and tightened it, and nawala ang problema.

When I mentioned it at the biodiesel thread, may nagcomment di kaya dahil nalinis ang filter kaya nawala ang palyado, rather than the loose filter? Kasi nag comment din ako din naman ginalaw ang filter, bakit lumuwag? So just this week, I had my innova undergo the 5,000 pms. I specifically asked the service advisor to clean out my fuel tank and inspect it. At this time, no symptoms at all of the palyado, but I did mention it to the service advisor na matagal ko na kilala, since my ae92 corolla days. When he released my innova, he reported the liquid diesel to be clear, and the bottom of the tank to be clean. In effect, he gave a clean bill of health on my unit. He also knows of my use of biodiesel and he gave me the go signal before I used it.

One of the reason why I was concerned was due to my experience on contaminated biodiesel, which caused me to replace my fuel filter priming pump on my kia sedona. And this has affected several of my trucks. Now, I know how to distinguish the contaminated biodiesel and we now inspect before we mix it into our diesel.