truckfix 0 #1 Posted April 22, 2015 I have a 416 with a onan im getting yellow spark but wont run? I changed the coil same problem.any help please Share this post Link to post Share on other sites
Ed Kennell 35,817 #2 Posted April 22, 2015 Most electrical problems with the Onans can be resolved by cleaning all the connections. Download the wiring diagram for your engine, then go to the ignition schematic. Clean every terminal in the schematic. This includes every wire end and spade lug on switches, fuse blocks,etc. Share this post Link to post Share on other sites
Ed Kennell 35,817 #3 Posted April 22, 2015 Oh, , and I am assuming you have a good fuel supply to the cylinders as it sounds like you know it is a poor spark problem. Share this post Link to post Share on other sites
