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On 9 Mar 2001, at 13:04, Barry Viss wrote: > It dosen't affect the timing it at idle, but apperently it does at high > rpms, I took the air cleaner off just to see if maybe there was too much > friction somewhere before the throttle, but the vacuum still made a > difference. don't you think the fact that the engine is racing and the air > is moving fast would be enough? even if there is no load? whats that called > again, the venturi effect or something. This all depends on where the drilling comes out in the venturi; mostly the relationship of the port opening to the butterfly valve. I was willing to swear that this was placed in our cars such that there was no possible effect in the driveway, but now I'm starting to doubt my memory. > > If this is just one cylinder not firing right away after a cold start, > > then it may really not amount to much of anything. I've had > > problems like that that I THINK were related to too rich a starting > > mixture which often left one cylinder flooded. In my case, if I would > > go ahead and pull out of the drive way, pick up speed and then > > take my foot off the gas and let the engine brake me down to the > > stop sign 3 blocks away, this would clear out the engine and > > everything would be fine when I pulled away from the stop. > > > > Is this what you have? > > You could describe it this way... it is usually smoothed out by the time I > get to the end of our street, but I think that's just because the engine is > warmed up enough to stop it by then. The problem seems to be too regular to > be flooding, i.e. It always does it, and the same severity. If it stops that quickly, then I suspect we are talking about the same thing. A couple of blocks is too short to significantly warm up the engine, but it's plenty of time to clear out a wet cylinder. It's possible that you still have one of the A brains in your 68, and you MIGHT benefit from an upgrade to a B. No other changes are necessary. It's also possible that the opposite of flooding is happening. If there is air in one of the injectors or its hose, then it would take a couple of minutes to just get everything filled with gas. At any rate, I would just drive off and let this recover each time. Don't worry about it. - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- Unsubscribe? mailto:type3-request@vwtype3.org, Subject: unsubscribe