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Case35 02-19-2013 07:10:34 97.83.47.24 Report to Moderator	I recently aqquired a Case RC, and everything checked out okay, I changed fluids, and all that. I took the Bosch Mag off and it was very clean, I cleaned the points, and had good hot spark for a few turns, but I put it back on the tractor, and I only have spark on #1 & #4. Could anyone tell me what could be wrong? I dont really know a whole lot about these mags. Any help would be greatly appreciated! Thanks! [Reply]   [No Email]
Christopher Mikesell 02-20-2013 08:20:48 76.226.208.72 Report to Moderator	Re: Bosch Mag on 1936 RC in reply to Case35, 02-19-2013 07:10:34   I just went through an american bosch mag similar to the one that came on the RC cases. The only things that I can think of in order of likleyhood are, worn carbon brushes, way too small of a points gap (breaking on one lobe and not the other, a rusty spot on the cam eating away at the points rubbing block will cause this). How did you test for spark? Was the mag installed on the tractor? Your ground to the engine may be poor. Also, resistor plug wires can make a spark poorer. [Reply]  [No Email]
dc in illinois 02-19-2013 10:13:53 208.176.42.254 Report to Moderator	Re: Bosch Mag on 1936 RC in reply to Case35, 02-19-2013 07:10:34   I dont know about bosch but in the case #41 mag some times the springs and carbon points inside the cap get worn and weak.and this could case somthing like whats happing to you if it is the same on a bosch mag.and check the plug wires where they sit in the cap as these piont can be touchy. Bob [Reply]  [No Email]
Case35 02-19-2013 08:20:58 97.83.47.24 Report to Moderator	Re: Bosch Mag on 1936 RC in reply to Case35, 02-19-2013 07:10:34   Yes it does. [Reply]  [No Email]
DKase 02-19-2013 11:04:54 75.102.180.184 Report to Moderator	Re: Bosch Mag on 1936 RC in reply to Case35, 02-19-2013 08:20:58   My first guess would still be the impulse. If it does not catch good enough it will not wind the spring tight enough to get a good spark while turning by hand. if it was mine I would belt it to another tractor, check out the oil pressure, clutch, compression,etc, and then turn the gas on to get it running. My guess is it will run fine once fast enough so the impulse is not needed. [Reply]  [No Email]
1031D 02-19-2013 07:29:17 107.8.250.69 Report to Moderator	Re: Bosch Mag on 1936 RC in reply to Case35, 02-19-2013 07:10:34   Does the impulse trip on all cylinders? [Reply]  [No Email]