Hawk won't run with out the choke..
07-18-2010, 11:05 PM
#1
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Superstock
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Join Date: May 2009
Location: West Coast, SoCal Inland
Posts: 265
Hawk won't run with out the choke..Any ideas?
Hello every one, long time no forum.
I will get right to it..
Ok so my 98 hawk will only run with the choke on, even after it warms up. if i turn off the choke the bike dies.
also while riding it i reach down and turn the choke off.. once i do this when i let off the gas the bike begins to back fire. also downshifting will cause a back fire. coming to a stop sign or red light with the choke off instantly kills the bike.
Any thoughts.
5150.
I will get right to it..
Ok so my 98 hawk will only run with the choke on, even after it warms up. if i turn off the choke the bike dies.
also while riding it i reach down and turn the choke off.. once i do this when i let off the gas the bike begins to back fire. also downshifting will cause a back fire. coming to a stop sign or red light with the choke off instantly kills the bike.
Any thoughts.
5150.
Last edited by 5150; 07-18-2010 at 11:49 PM.
07-19-2010, 01:11 AM
#3
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Join Date: May 2005
Location: Seattle, WA
Posts: 216
Running with normal power? Mine acted like this, was also weak, it was a gummed up carb so I was running on one cylinder. Sounds mega-lean down low, so what inderocker said, carbs may need some attention.
07-19-2010, 10:41 AM
#5
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Yeah, still runs with normal power once i take off and the choke is off. crazy torque still nice acceleration, just wont run at the low rpms with the choke off. only stays running if i am feathering the gas.
07-19-2010, 10:52 AM
#7
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07-19-2010, 02:08 PM
#10
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Superstock
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https://www.superhawkforum.com/forum...47&postcount=4
Worked for me on a bike sitting with fuel in the carbs for years.
Yeah. If I hadn't tried it, I probably wouldn't believe it either.
Worked for me on a bike sitting with fuel in the carbs for years.
Yeah. If I hadn't tried it, I probably wouldn't believe it either.
I read the post. i like the idea of not taking everything out and off.
I have a question though. i have never taken off the gas tank and i am under the impression from what i have read that my 98 has no fuel petcock that is manually able to be turned to the off position. It appears from what i have read that it is vacum operated? is this correct?
If that is correct, can i take the fuel lines off the carbs and not have them leak fuel all over? or do i need to pinch off the lines some how before taking them off the carbs?
5150
07-19-2010, 02:12 PM
#11
I don't need any Meds
Superstock
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Join Date: May 2009
Location: West Coast, SoCal Inland
Posts: 265
i am a bit low on the mechanical side of things. would i need to remove the entire carb set up, all the pairs and air cleaners and stuff to get at the pilot jets? or can you cheat a little bit?
I just repaired my rear master cyclinder and the book said i had to put the bike ina stand and remove the swing arm.. pshhhh screw that. i cheat and pulled the cotter pin off the arm pushed out the master as far as i could and then jimmyed the locking nut off. saved me a ton of time. went back together just as easy as the take off.
thanks for any suggestions.
5150
07-19-2010, 02:18 PM
#12
Out of my mind, back in 5
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Location: Skurup, Sweden
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I read the post. i like the idea of not taking everything out and off.
I have a question though. i have never taken off the gas tank and i am under the impression from what i have read that my 98 has no fuel petcock that is manually able to be turned to the off position. It appears from what i have read that it is vacum operated? is this correct?
If that is correct, can i take the fuel lines off the carbs and not have them leak fuel all over? or do i need to pinch off the lines some how before taking them off the carbs?
5150
I have a question though. i have never taken off the gas tank and i am under the impression from what i have read that my 98 has no fuel petcock that is manually able to be turned to the off position. It appears from what i have read that it is vacum operated? is this correct?
If that is correct, can i take the fuel lines off the carbs and not have them leak fuel all over? or do i need to pinch off the lines some how before taking them off the carbs?
5150
07-19-2010, 05:50 PM
#16
Out of my mind, back in 5
MotoGP
Join Date: Nov 2006
Location: Skurup, Sweden
Posts: 6,109
It's such a small effort to turn the **** I never bothered trying without doing it... I did however forget to re-set it once... That gave me a good time having the tank lifted at the roadside to get at it......
07-20-2010, 03:00 PM
#17
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Superstock
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OK it is more or less semi fixed and working it self out.
i had a long detailed post of how it came about but i took to long to hit post and it auto logged me and i lost it all.
Long story short. sea foam went in. I flooded the bike. let it sit all day. Came back later to ride. took it out. turned off choke after warm and she stopped dying at stand stills.
90 miles later she is getting better and better. still some hesitation and jerky ness around 3k rpms to 4k but it seems to come and go as whatever is clogging the carb up is being eaten away.
If after a couple more tanks of gas and sea foam it levels off and is still not smooth i will next try the Yamaha cleaner, carb in bike trick, Thanks Rk1.
after that i will pull them out and rebuild them.
Thanks for the help everyone.
5150.
Ps thanks Inde for getting me on the right track to get this fixed. I had my first ride last night of the season after a year off, and it was one of the best nights of this year. also was my first night time ride. Nothing else like riding along the over look and seeing the city lights down below.
i had a long detailed post of how it came about but i took to long to hit post and it auto logged me and i lost it all.
Long story short. sea foam went in. I flooded the bike. let it sit all day. Came back later to ride. took it out. turned off choke after warm and she stopped dying at stand stills.
90 miles later she is getting better and better. still some hesitation and jerky ness around 3k rpms to 4k but it seems to come and go as whatever is clogging the carb up is being eaten away.
If after a couple more tanks of gas and sea foam it levels off and is still not smooth i will next try the Yamaha cleaner, carb in bike trick, Thanks Rk1.
after that i will pull them out and rebuild them.
Thanks for the help everyone.
5150.
Ps thanks Inde for getting me on the right track to get this fixed. I had my first ride last night of the season after a year off, and it was one of the best nights of this year. also was my first night time ride. Nothing else like riding along the over look and seeing the city lights down below.
Last edited by 5150; 07-20-2010 at 03:03 PM.
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