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Showing results for tags 'poorstarting'.
Hello all, hope you can help and I'm hoping that this is simple, I have a 2009 DRZ400sm; I just passed 18,000 Km on her. I bought her at 12,000 Km. The 6,000 Km I put on her have been mainly commuting miles (12 miles into work/12 miles home). She has always run really well; no problems with her. I decided to do a 18,000 Km service on her. I changed the coolant. I replaced the oil filter and changed the oil. I replaced the spark plug (that was the first time I have ever replaced an spark plug). The spark plug I removed seemed fine and in good condition. I started her up and briefly ran her after the spark plug change to check I had a good connection. She ran fine. But I only ran her for a few minutes. I didn't ride her. Like a fool I threw away the old spark plug. Finally I removed, inspected, cleaned, and re-oiled the air filter (this was also the first time I have replaced an air filter). Whilst the air filter was drying I gave the bike a right good clean and a wash. I put the air filter back on and started her up and she didn't seem to be running as well. I felt like I need to keep the choke out for longer than previously and that she needed a bit of throttle to keep idling. If I left her unattended she would cut out. I also felt that the exhaust was a bit more smokey. I spoke with a friend and he suggested that I had over-oiled the air filter and was starving her. I removed the air filter and started her, but it didn't help. It also seemed like she was getting rougher. The idle was getting poorer and the she was taking more starter cranks to get her going. I flattened the battery a number of times at this point playing around with her. I removed the spark plug and checked the gap which was within tolerance. I replace the plug and there was no change. She started poorly, ran rough and would cut out. Smokey exhaust. I left here alone for the night. The next day I tried again she was worse. Hard to start. Needed full choke. She would cut out with zero choke. Smokey exhaust. There were even few flames firing out of her. This is still with air filter removed. And that is as far as I have got. I'm worried about what I have done. I don't want to ride her the 12 miles to the Mechanic's place because I'm not sure if I will make it or if I am doing her harm . I've been reading the forums, but I fell I lacking knowledge to understand the solution. My gut feeling is that the combustion is poor for some reason. Is there any other diagnostics people might recommend, anything else I can check. Could I be unlucky and have a bad spark-plug. Have I damaged something -nothing felt like it went wrong when I was replacing the spark-plug. If I could just ride it to the mechanics I would be happy. Regards, hope you can help, Fat Robert