How to turn the idle down?
Spark, gasoline, compression. verify for spark with an previous spark plug inserted into between the plug wires and the metallic area of the plug touching a metallic floor on the engine, see in case you may discover a spark while the engine is cranked. verify for gasoline, in case you haven't any longer have been given a gauge you may depress the schrader valve on the gasoline rail, it in lots of circumstances has a plastic cap over it and it feels like the valve stem on a tire. be careful as gasoline will spray out at 40PSI so conceal it with a rag. to ascertain for compression without a compression guage, crank the engine over it would sound even, as each and each cylinder comes up on its compression stroke the starter will decelerate somewhat. If a variety of of cylinders have low compression the sound would be choppy. If not one of the cylinders have compression, the sound would be secure without pulses. the eu is remarkable. once you turn the main to on does the verify engine mild come on? if no longer then the workstation won't be getting ability. different issues to ascertain are cam or crank sensors those administration ignition and injector timing.
fuse panels: 2 one under the dash above the driver's side kick panel and there's another under the hood, between the battery and the windshield. neither will let you adjust idle nor are there any fuses inside that will affect the idle. How to turn the idle down? Now that depends on why the idle is high. BUT, there is a screw on the throttle you can turn which is the ONLY official way of adjusting the idle. The idle adjustment screw ON THESE TRUCKS is known for having the o-ring harden which then allows engine vibrations to cause the screw to vibrate and back out which in turn will cause the idle to increase. Pull the screw out, install new o-ring, then adjust your idle back where it should be. Now wasn't that easier than the 2 page reply above me?
