SoopermanLuva
ArboristSite Member
Good afternoon, gentlemen!
Last week I just finished fixing a 036. Plenty of new parts including a spark plug straight from the Stihl dealer. Went to test the saw and it starts up fine, but after a minute or so, the idle is all over the place until the engine shuts off completely, like someone flicked the switch. Still had the old igniton coil in there, so I thought, that would be the problem. Popped a new one in yesterday and... no workee. When you ground the plug to the cylinder, it does spark. Almost everything else is brand new, so I was confused. Had an old plug from a friend's MS180 laying around, which didn't work well in his saw, but I thought I'd pop it in, see what happens and she fired right up.
Apparently, the spark the dealer sold me was no good for the saw, but it actually at least fired up with the old coil. Now here's the question: could the spark plug be at fault for the saw cutting out when getting hot and not the coil? Does it make sense to investigate that or would you say the coil will probably be done in the near future anyway and I should keep the new one in there if it's working?
I won't be in the shop to test it further and I'd love to hear some opinions.
Update: Got a new Bosch spark plug, put the old coil in, adjusted gap and she's running fine. So even new stuff can be no good and can get you really confused after a rebuild.
Last week I just finished fixing a 036. Plenty of new parts including a spark plug straight from the Stihl dealer. Went to test the saw and it starts up fine, but after a minute or so, the idle is all over the place until the engine shuts off completely, like someone flicked the switch. Still had the old igniton coil in there, so I thought, that would be the problem. Popped a new one in yesterday and... no workee. When you ground the plug to the cylinder, it does spark. Almost everything else is brand new, so I was confused. Had an old plug from a friend's MS180 laying around, which didn't work well in his saw, but I thought I'd pop it in, see what happens and she fired right up.
Apparently, the spark the dealer sold me was no good for the saw, but it actually at least fired up with the old coil. Now here's the question: could the spark plug be at fault for the saw cutting out when getting hot and not the coil? Does it make sense to investigate that or would you say the coil will probably be done in the near future anyway and I should keep the new one in there if it's working?
I won't be in the shop to test it further and I'd love to hear some opinions.
Update: Got a new Bosch spark plug, put the old coil in, adjusted gap and she's running fine. So even new stuff can be no good and can get you really confused after a rebuild.
