[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [New Search]
Something to watch out for: intermittent high idle when the engine is warm. This little problem was making me crazy. I couldn't find the cause, but I knew it was the left carb, so I rebuilt a spare. I got the rebuilt one in, synced the pair up nicely at idle, put on the linkage, revved up, sounded great, backed off to idle just fine, revved again, backed off and it was in runaway mode again. With enough light on the situation I was able to see that the left idle stop had positively stopped about a sixteenth off the screw. I checked the cable for tension (had the pedal hung up on the new rug?), I loosened up all for linkage arms and reset them, nothing worked. Finally in a fit of inspiration I pulled off the choke cover and hit pay dirt. Even though my chokes are disabled, the fast-idle cam in the left one was sagging down just enough to sometimes catch the tip of the finger. The fine spring meant to keep the cam in line was in place, but with almost no tension, and I suspect that as the engine warmed it was expanding just enough to let the cam slip just enough. Rather than pull the whole thing off again after my nice sync job, I chose a Q&D solution. I couldn't pull the spring around to tighten it, so I just bent it so it hooks around the cam itself rather than its pin. This adds enough tension to keep the dang thing out of the way. Since I had the same problem with two different choke mechanisms I'm wondering whether this problem might be due to simple aging of these springs. Anyway, all you dual carb folks, keep an eye on it. Steven Ayres, Prescott AZ '66 343 ------------------------------------------------------------------- Too much? Digest! mailto:type3-d-request@vwtype3.org Subj=subscribe