I recommend when one has a high-idle situation that the first thing done is a smoke test. Usually the high idle (up to 1,500-2,000 RPM) situation is caused these days most commonly by a vacuum leak, due to old rubber in the intake system.
Not a bad idea at all although only really badly worn throttle shafts or like you mentioned, intake rubber parts will cause idle that is difficult to control.
Hey, Ralph! Another great video, as always. 👌🏻 I sometimes have the opposite - low, lumpy idle. What’s your take on that? 🤷🏻♂️ (1991 W201 M103, 140K mi, new plugs, wires, dizzy cap & rotor, etc. Overall, in excellent mechanical condition otherwise.)
@@straybenzes The adjustment through the top of the air filter housing? I’ve adjusted that myself in the past and, to be honest, it didn’t go so well. 😔 I guess my “adjustments” were a little too aggressive?
@@ronsuriano The symptoms described go with adjusting the screw too far to the right and left. You will need to make smaller adjustments and take a drive to see if it gets better. A CO2 exhaust analyzer would of course make that simpler and more accurate, but that tool is usually not in reach of a DYIer.
I recommend when one has a high-idle situation that the first thing done is a smoke test. Usually the high idle (up to 1,500-2,000 RPM) situation is caused these days most commonly by a vacuum leak, due to old rubber in the intake system.
Not a bad idea at all although only really badly worn throttle shafts or like you mentioned, intake rubber parts will cause idle that is difficult to control.
Thank you Ralphy!
Glad you liked it
Great, Ralph
Thanks!
Great info !
Glad it was helpful!
👍🏻👍🏻👍🏻
Thx!
Hey, Ralph! Another great video, as always. 👌🏻 I sometimes have the opposite - low, lumpy idle. What’s your take on that? 🤷🏻♂️
(1991 W201 M103, 140K mi, new plugs, wires, dizzy cap & rotor, etc. Overall, in excellent mechanical condition otherwise.)
That may be a messed up idle fuel/air mix. Did you try adjust that yet?
@@straybenzes The adjustment through the top of the air filter housing? I’ve adjusted that myself in the past and, to be honest, it didn’t go so well. 😔 I guess my “adjustments” were a little too aggressive?
@@ronsuriano The symptoms described go with adjusting the screw too far to the right and left. You will need to make smaller adjustments and take a drive to see if it gets better. A CO2 exhaust analyzer would of course make that simpler and more accurate, but that tool is usually not in reach of a DYIer.