06-15-2013, 04:06 PM #1
First day out with issues.. Arrrggggggg
So I took my xl1200 out for the first time his year. I ran it on the hose to make sure no leaks, because I replaced/rerouted a few water lines. I noticed all the discharge was coming out the back pisser, but since it seemed like it was more pressure than normal figured it was ok. Got into the bay, and ran good until I felt a hesitation. The rubber boot that connects the stinger and exhaust was leaking. No biggie, so I tightened it, and stopped the water from leaking. So once everything was tightened up, I hit the throttle, and it wouldn't rev above 3000-3500, and top speed 15mph. So luckily, I was close to the inlet, and idled it in.
So I got it on the hose to flush it out, and see if I could see anything suspect. Started up ran fine for 5 minutes, and all pissers were working... then whaaaaaaaaaaaa, whaaaaaaaaaaa. Runaway engine. I quickly hit the throttle, and it stopped. But now every time I go to start it, I feel like it wants to rev high, but I shut it off fast.
I did swap out the powervalves last year, and the connector pin was giving me a hard time (sticking), But cycling ok. I have a new one, maybe I'll swap it out. Does anyone have any suggestion what might have caused this...besides an air leak? Like I mentioned, the only thing different than last year is the TDR waterbox, billet powervalves, and re-routed a couple water lines. Forgot to mention, got home and checked compression. 155/165/170
06-15-2013, 05:42 PM #2
This is just a shot in the dark but have you checked the carb bolts to see if they are tight.
06-15-2013, 06:54 PM #3
I had my exhaust off at the end of last season and checked everything down there including oil lines, while I had the chance. Would a bad reed/reeds cause this? I did have a few bad backfires lately.
06-15-2013, 07:24 PM #4
-a used set of 1300 reeds are a nice upgrade and a direct fit.
06-15-2013, 08:04 PM #5
Hmm, only thing was that it was running strong for a few minutes beforehand. And it felt more like running on 1.5 cylinders, if that..lol
06-16-2013, 01:49 PM #6
I didn't catch the part about the back fire in the earlier post. check your pulse lines especially if you are running the drilled out return mod on your carbs. also check for a bent (butterfly) on your carbs.
06-16-2013, 04:16 PM #7
Will check that out. I'm trying to find a starting point before pulling the exhaust again. Would the powervalves cause the low rpm? May pop the covers and see if they are all moving.
06-16-2013, 05:32 PM #8
Backfire? check the rear seal for an air leak.
06-16-2013, 07:15 PM #9
06-16-2013, 08:29 PM #10
[QUOTE=pokplalya22;2188451]I'm trying to find a starting point before pulling the exhaust again.Would the powervalves cause the low rpm?
yes but you'd see 5k RPM.
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