Help! engine dies after 6000 rpm
09-01-2005, 01:01 AM
#1
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Help! engine dies after 6000 rpm
rode my bike 200 miles to prescott this week to visit my friend and get some much needed work on the hawk done. changed all the fluids, checked valve clearence and checked carb sync.... spot on... and also did a baffelectomy to get me by until i can afford pipes. also cleaned out the carbs a bit. put her all back together and wow....up until 6000 she pulls much harder than she did before but after 6000 it 's like the fuel gets cut of. she will go all the way to redline but it stutters the whole way up. i tried to richen it up a bit by raising the needles a notch, but that made it worse. now i have it leaned out but it's too late in the evening to test that out. i'm also gonna recheck the gas tank vent lines again to make sure i didn't pinch those. amy other ideas would be greatly appreciated as i have been stuck in prescott for a couple extra days and i need to get me and the bike back down to tucson so i can get back to work.
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09-02-2005, 06:52 PM
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well.. i made the 200+ mile trip home today..... really suprised it made it. funny thing is... on the way up to prescott i was getting 35 mpg... on the way back home it was at 25 mpg between prescott and phoenix and went down to less tha 20 mpg from phoenix to tucson. the elevation change seemed to help a little....still unsure of whats going on... a diagnosis at my local dealership is $70..... ugh!
09-08-2005, 07:00 PM
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okie dokie... here was the problem..... extra rich jetting. i did a drastic measure and returned the main jets back to stock specs. i say drastic because it had a 198 and 200 in the carbs, and ran perfectly fine with that until the bafflectomy. still don't understand how the bafflectomy made it run rich.. but, ohh well. pulls all the way to the top better than ever. however i think i might have to jet it just a tad richer than stock because when i bought the bike i was told it had aftermarket cams and pistons. so my question now is, how do i know when it's too lean?
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09-08-2005, 08:09 PM
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my e-penis is huge!!
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Re: Help! engine dies after 6000 rpm
There are a couple of ways to test that. 1 take it to a shop that has an exhaust gas analizer. 2 have the bike dynoed. the graph will show when and where it is running rich or lean. 3 the cheapest and easiest way is to pull a sparkplug and read it. The end of the plug should be a light coffee color. If it is black and sooty, it's too rich. If it still looks new or whitish, Its too lean. The jets you stated you put back in it are not stock jets. If I remember correctly, when I rejetted my hawk, stock jets were 175/178. Hope this helps.
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