Check this link out:
formatting link
I posted before, but now I found some info re intake manifold gasket
> problem especially in venture and montana's. Could this be the
> saurce of my problems?
> There is a law suite in the work.
>
> I asked the mechanic again what exactly did the scanner read. He > said the
> left bank reading was lean on my venture van 2000. He also
> mentioned that
> cylinder 6 is miss firing (I assume that the left bank is cylinder > 2,4, and
> 6). I replaced the 6th cylinder spark plug which was really worn > (I
> should replace 2nd cylinder spark plug it was also worn, 4th was ok).
> And at first it seamed that starting the van was a lot easier. But > next
> day engine light was back on and it takes about 5 tries before the > ignition
> starts. Durring a hot day starts fine, but the engin still sounds > like it
> is miss firing. On occasion there is a strong spell of gasoline > towards the
> back of the van, but most of the time I don't smell any thing.
>
> Question can ignition problems have anything to with this lean
> reading.
> Can it be related to the miss firing problem? If so, If so
> difficulty
> starting especially in the mornings, does that give you a clue if it > could
> have something to do with a bad sensor as opposed to miss firing > problem?
> I would like to address the mostly likely problem first or the easiest
> solution first. Also, if you think it is the sensor's fault, > which one
> would I have to replace?
>
> btw: I year ago I had sugar in the gas tank, so I had the tank > replaced.
> And added some fuel injection cleaner in the gasoline. Then had no > engine
> light go on for 4 months. Then engine light disappeared again. > And now
> that it is warm again, engine light is on again.