by mxbrad57 » Wed Jul 29, 2020 7:19 am
No, this isn't your typical lean bog post. Yes I have read a million posts on this.
I have a 2007 Honda CRF450R. The bike idles fine, runs fine, goes through all the RPMs fine. But I just started having the dreaded lean bog.
I have had this issue with my old 2004 250x, the solve was the usual.. Tie the AP mod and change the leak jet. I did that on this carb. I went from a 55 to a 45 leak jet, cleaned all the jets, cleaned the brass squirt nozzle with Honda carb cleaner. I stretched the spring out 15mm longer and let everything soak in carb cleaner.
I have what seems to be a powerful stream of fuel when I whack the throttle. It does not hit the slide, and it seems to last about a second like it should(maybe just short of a second? That's a hard thing to tell). The bike was working perfectly fine.. So something changed.
Any other ideas?? Am I left to buy an AP rebuild kit and a JD jetting kit? It seems like the AP works perfectly fine but yet I still have the lean bog!
Question as well: is the hot start cable suppose to be 'free' moving at the carb fitting? I already replaced that cable a year ago with a motion pro one that doesn't have a plastic fitting, but it's very 'loose' feeling all of the sudden(at the carb fitting) and I'm wondering if thats taking in some air and leaning me out?? As far as I can tell there is no leaks on any seals at the carb.
I'm out of ideas(and I'm suppose to leave in a week for riding(which I will still do, just have to remember about the bog lol)) .. So I'm looking for other ideas!
TIA.
In dirt, we trust. - mxbrad57