Save This Page ] [ Follow Ups ] [ Post Followup ] [ Lawn Tractor / Garden Tractors Discussion Forum ]
| | SSB Farm Tractor Parts, Manuals & Antique Tractors | | Aftermarket Farm Tractor Parts | | Service & Repair Farm Tractor Manuals | |
| | Tractor Implements | | Tractor Seats | | Trailer Parts | | Tractor Loaders | | PTO Generators | | Small Engines | | Rear View Backup Camera | |
| | Pedal Toy Tractors | | Tractor Books | | Tractor Data / Info / Specs | | Tractor Blog | | Antique Tractors History | | Related Sites | | Rustic Home | |
 SEARCH MANUALS  | FIND PARTS |
In Reply to: Re: briggs 40h777/0241-e1 posted by kevin on Wednesday, July 13, 2011:
If you suspect coils may be weak/breaking down from heat,take both off & take to local mower shop & have them check in a coil tester,weak/damaged flywheel magnets,incorrect coil/flywheel air gap can also cause a problem or worn bearings allowing air gap to change under compression load.Many times a mech problem on eng appears to be an ign problem-valve train problem or valves that need an adj,worn valve guides,problem in carb/fuel system,air leak in intake manifold due to loose manifold,bad gaskets or a crack in manifold,leaking head gasket(s),worn rings/cyl that leak when eng gets hot,all of the above can lead you to believe you have an ign problem,if you don't have a service/repair manual for eng it would be to your advantage to get & give eng a through going over & possibly doing a leakdown test on eng also.One other thing to try on ign system before pulling coils,disconnect Y lead at each ign coil that connects to kill lead from ign sw,these leads have a diode in lead to each coil to isolate coils from each other,you may have a diode thats breaking down from heat,usually but not always if either diode goes bad(shorted internally)it will take out both coils & you'll have no spark.
Save This Page ] [ Follow Ups ] [ Post Followup ] [ Lawn Tractor / Garden Tractors Discussion Forum ]Post a Followup
