

| Subject: | Re: Rough running till warmed up |
| From: | dylan friedman |
| Date: | Tue, 21 Aug 2007 10:47:28 -0700 |
yes, mine are 2.1s. i don't have any experience with the 1.9s and have been fazing all wbxs out with subarus. just trying to help. df David Kao <dtkao0205@yahoo.com> wrote: Dylan, thanks for sharing your experience in setting idle for your Vanagons. I have two Vanagons, a 83.5 and a 84. I think they have an older injection system than yours. If I set mine to 900 for idle they would perform poorly. I don't mean very poor but they will do better clearly if I set them to around 950 - 1000. I believe it is dangerous to set idle too slowly. The engine may overheat, especially if AC is on, in stop and go traffic jam situations. David --- dylan friedman wrote: > I set idle by ear now. > I agree with the range, but find each van to be a little bit different. > My Carat would idle just below 900 and was smooth as silk. > My 91 Syncros idle above that closer to 1000+, both just as smooth, just higher revs. > I tried getting them all to the same rpm while they were sitting next to each other, but > something would not be right in each case. > Go with what works and the numbers are just a baseline to start from. > > dylan > > > David Kao wrote: I guess the way I stated it is misleading. But if you > have a strong > engine you will experience it yourself. > > Vanagon's idle can be set to within 900 - 1000 RPM or even faster. > People tend to set it a little slower toward 900 rather than toward > 1000, including myself. Whenever I did that the engine would perform > poorly. I had to go back and turn the idle adjustment screw CCW half > a turn. It would be like give a kick to the engine and you would feel > a significant jump in acceleration. > > So you are right, it is not because turning up the adjustment screw > gives it more power. It is only to set it to what it should be. Idle > setting has an implication to engine gas mileage. But engine performance > will suffer if the idle was set to too low. I made the mistake all the time. > Had to force myself to turn that screw back up a bit. > > David > > > > > > > --- Mike S wrote: > > > At 01:15 AM 8/21/2007, David Kao wrote... > > >Try to turn the idle adjustment screw CCW half a turn to one or two > > >turns. This should make some improvement for the idle. If the idle > > >becomes > > >too fast then turn it back half a turn. Usually this will improve > > >horse power quite a bit. > > > > I've seen this claim a few times. Why would that be the case? > > > > Isn't the idle screw simply an air bypass in the throttle body? How > > does changing the small amount of air which is allowed to bypass a > > closed throttle plate have any significant effect on the amount of air > > which flows when the throttle is fully open? > > > > > > > ____________________________________________________________________________________ > Building a website is a piece of cake. Yahoo! Small Business gives you all the tools to get > online. > http://smallbusiness.yahoo.com/webhosting > ____________________________________________________________________________________Ready for the edge of your seat? Check out tonight's top picks on Yahoo! TV. http://tv.yahoo.com/
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