Muskieman Posted June 4, 2007 Report Share Posted June 4, 2007 My 1998 Rude 30 tiller is acting up. when i reach full throttle is seems to misfire until it warms up..then i'm ok. this morning i went out and it did the same it ran fine for 10 minutes full throttle and then cut to one cylinder. after a while of investigation i determined that the lower ignition coil was'nt firing. i trolled home to the dock with my electric. i decided to try it out at the dock and it ran fine on 2 cylinders. and after a 2 minute ride the coil cut out again. now in my driveway with the muccf on it ran fine full out for 2 minutes and did it again. #1 ; i'll try switching my coils around, sounds like the lower one gets hot and cuts out, cools off and runs fine. #2 C.D.I i do not want to buy a new one!!! too $$ strange.. it just started to run on one again and i give it a shot of gas and #2 kicks in. plugs are new, checked all my wiring for cracks corrosion and ect . everything is tight. gel behind C.D.I is clean and does'nt seem to have heated up dry as a bone. i've heard of smaller Rudes havin coil problems but are these the right symptoms. cause i know that on a car a coil either works or it does'nt. Fishin for tips. thanks for all the help in advance. Muskieman Link to comment Share on other sites More sharing options...
Gerritt Posted June 4, 2007 Report Share Posted June 4, 2007 Odd. I am also looking at replacing a Coil..... one thing to try try a different set of plugs. I know you stated they are new but I have seen more then one plug act up new from the box, Make sure it is also properly gapped. Try a Decent plug NGK's are probably the best out there. worth a shot brother. Also check the wire from the coil to the plug for a short. Good luck! Gerritt. Link to comment Share on other sites More sharing options...
Zib Posted June 4, 2007 Report Share Posted June 4, 2007 I have the same problem with my 1990 35HP Force tiller (biggest POS ever made). A new coil would cost me $190 US & that POS motor isn't worth that much. Good luck in fixing your problem. Link to comment Share on other sites More sharing options...
Muskieman Posted June 4, 2007 Author Report Share Posted June 4, 2007 I just got off the phone with BRP's tech line and it sounds like a coil to them. Randy Link to comment Share on other sites More sharing options...
Fisherman Posted June 4, 2007 Report Share Posted June 4, 2007 Are you most definitely sure it's a coil and not a bad plug. I had the same symptoms on an old chainsaw, ran for 1-2 minutes then died, let it cool, then it would go like a bat outa hades for another 2 minutes. Tried an old plug, problem solved. Link to comment Share on other sites More sharing options...
bigbuck Posted June 4, 2007 Report Share Posted June 4, 2007 Try getting new plugs first, it could be a bad plug, you never know. 15 bucks is better than a couple of hundred. If it isn't the plugs, well, you will have a spare set in the boat (which you should anyways). Good luck and good fishing. Link to comment Share on other sites More sharing options...
Muskieman Posted June 4, 2007 Author Report Share Posted June 4, 2007 i just put 2 plugs i for good measure and it ran fine for 10 minutes full tilt and is doing the same. i swapped the coils from top to bottom and guess what now it's the top cylinder that gets no spark. now i'm 99.9% sure it's a coil. time to call the dealer . Link to comment Share on other sites More sharing options...
boatman Posted June 4, 2007 Report Share Posted June 4, 2007 (edited) Cutting out when hot is a classic coil problem. Best to take it to the dealer unless you are comfortable doing it yourself. Edited June 4, 2007 by boatman Link to comment Share on other sites More sharing options...
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