question on hot start (or rather, the lack thereof)
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question on hot start (or rather, the lack thereof)
Hi,
I have a '73 Ironhead Sporty that starts on the first or second kick when it's been sitting, but I cannot seem to figure out how to get it going again if it's been running and I shut it off.
I don't know if it'll help, but the sequence that works to start it cold is: ignition off, fuel on. two pumps with the throttle and a kick. two more pumps with the throttle and another kick. turn ignition on. no throttle, and kick and the bike starts up.
When it has been running and I try to restart it, I can't get it going again without letting it sit for 5-10 minutes with the fuel off. Any advice?
thanks,
Chris
I have a '73 Ironhead Sporty that starts on the first or second kick when it's been sitting, but I cannot seem to figure out how to get it going again if it's been running and I shut it off.
I don't know if it'll help, but the sequence that works to start it cold is: ignition off, fuel on. two pumps with the throttle and a kick. two more pumps with the throttle and another kick. turn ignition on. no throttle, and kick and the bike starts up.
When it has been running and I try to restart it, I can't get it going again without letting it sit for 5-10 minutes with the fuel off. Any advice?
thanks,
Chris
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RE: question on hot start (or rather, the lack thereof)
ORIGINAL: AcidRayn
what do the plugs look like? black and fluffy? running too rich
or stuck choke?
what do the plugs look like? black and fluffy? running too rich
or stuck choke?
thanks for the help,
Chris
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Joined: Feb 2006
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From: Houston Texas
RE: question on hot start (or rather, the lack thereof)
ChrisB.........First of all, what kind of carb do you have? Is it a Bendix, Tillotson or some other?
It sounds to me like you are flooding it when you attempt to start it after it is warmed up. The sooty plugs verify that as well.
I suggest that on a warm start you DO NOT PUMP the throttle and do not choke it. Simply crack the throttle barely open and kick it off. Is the machine an electric start or a kick start model? I am assuming here that you are using the kick start from your description of your start procedure..................pg
It sounds to me like you are flooding it when you attempt to start it after it is warmed up. The sooty plugs verify that as well.
I suggest that on a warm start you DO NOT PUMP the throttle and do not choke it. Simply crack the throttle barely open and kick it off. Is the machine an electric start or a kick start model? I am assuming here that you are using the kick start from your description of your start procedure..................pg
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RE: question on hot start (or rather, the lack thereof)
ORIGINAL: piniongear
ChrisB.........First of all, what kind of carb do you have? Is it a Bendix, Tillotson or some other?
It sounds to me like you are flooding it when you attempt to start it after it is warmed up. The sooty plugs verify that as well.
I suggest that on a warm start you DO NOT PUMP the throttle and do not choke it. Simply crack the throttle barely open and kick it off. Is the machine an electric start or a kick start model? I am assuming here that you are using the kick start from your description of your start procedure..................pg
ChrisB.........First of all, what kind of carb do you have? Is it a Bendix, Tillotson or some other?
It sounds to me like you are flooding it when you attempt to start it after it is warmed up. The sooty plugs verify that as well.
I suggest that on a warm start you DO NOT PUMP the throttle and do not choke it. Simply crack the throttle barely open and kick it off. Is the machine an electric start or a kick start model? I am assuming here that you are using the kick start from your description of your start procedure..................pg
The carb is an S&S Super. On the warm start attempts I don't open the throttle at all. I'll have to make sure that the choke is completely closed as I think that it probably has not been (bike won't quite idle without a little choke).
The bike is a kick start.
thanks,
Chris
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From: Houston Texas
RE: question on hot start (or rather, the lack thereof)
ChrisB......First, let me say I have no experience with an S&S carb, so I can offer nothing specific there. It sounds like the bike is flooding after it is warmed up and you attempt a restart.
The bike should idle smooth without any choke being on. If your setup requires some choke be applied, I suggest that you lean out the low speed needle until you get the smooth idle with the choke fully off.
That might solve the flooding problem on the warm restart. Try this and let us know what the result is..........pg
The bike should idle smooth without any choke being on. If your setup requires some choke be applied, I suggest that you lean out the low speed needle until you get the smooth idle with the choke fully off.
That might solve the flooding problem on the warm restart. Try this and let us know what the result is..........pg
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From: Toms River, NJ
RE: question on hot start (or rather, the lack thereof)
hey chris, let me ask you this.
what is the history of this bike?
how long have you had it?
did it sit for a long time before you got it, or has it sat a long time since you got it. a long time is a year or more.
has the carb ever been properly taken down and cleaned, rebuilt?
you may have a minor problem.
see, when a bike, or anything that uses motorfuel sits for extended periods, the gas will go bad.
does the inside of the tank smell like "varnish"? or the exhaust?
if your needing a "bit" of choke, and leaning out the idle screw does not do it, this may be your problem.
its been some time since i worked on a harley carb of any sorts, but they are all basically the same.
let us know so we can move you along
what is the history of this bike?
how long have you had it?
did it sit for a long time before you got it, or has it sat a long time since you got it. a long time is a year or more.
has the carb ever been properly taken down and cleaned, rebuilt?
you may have a minor problem.
see, when a bike, or anything that uses motorfuel sits for extended periods, the gas will go bad.
does the inside of the tank smell like "varnish"? or the exhaust?
if your needing a "bit" of choke, and leaning out the idle screw does not do it, this may be your problem.
its been some time since i worked on a harley carb of any sorts, but they are all basically the same.
let us know so we can move you along
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RE: question on hot start (or rather, the lack thereof)
ORIGINAL: piniongear
ChrisB......First, let me say I have no experience with an S&S carb, so I can offer nothing specific there. It sounds like the bike is flooding after it is warmed up and you attempt a restart.
The bike should idle smooth without any choke being on. If your setup requires some choke be applied, I suggest that you lean out the low speed needle until you get the smooth idle with the choke fully off.
That might solve the flooding problem on the warm restart. Try this and let us know what the result is..........pg
ChrisB......First, let me say I have no experience with an S&S carb, so I can offer nothing specific there. It sounds like the bike is flooding after it is warmed up and you attempt a restart.
The bike should idle smooth without any choke being on. If your setup requires some choke be applied, I suggest that you lean out the low speed needle until you get the smooth idle with the choke fully off.
That might solve the flooding problem on the warm restart. Try this and let us know what the result is..........pg
Chris
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RE: question on hot start (or rather, the lack thereof)
ORIGINAL: AcidRayn
hey chris, let me ask you this.
what is the history of this bike?
how long have you had it?
did it sit for a long time before you got it, or has it sat a long time since you got it. a long time is a year or more.
has the carb ever been properly taken down and cleaned, rebuilt?
you may have a minor problem.
see, when a bike, or anything that uses motorfuel sits for extended periods, the gas will go bad.
does the inside of the tank smell like "varnish"? or the exhaust?
if your needing a "bit" of choke, and leaning out the idle screw does not do it, this may be your problem.
its been some time since i worked on a harley carb of any sorts, but they are all basically the same.
let us know so we can move you along
hey chris, let me ask you this.
what is the history of this bike?
how long have you had it?
did it sit for a long time before you got it, or has it sat a long time since you got it. a long time is a year or more.
has the carb ever been properly taken down and cleaned, rebuilt?
you may have a minor problem.
see, when a bike, or anything that uses motorfuel sits for extended periods, the gas will go bad.
does the inside of the tank smell like "varnish"? or the exhaust?
if your needing a "bit" of choke, and leaning out the idle screw does not do it, this may be your problem.
its been some time since i worked on a harley carb of any sorts, but they are all basically the same.
let us know so we can move you along
I don't know how long the S&S carb has been on there or if it has ever been rebuilt. Ken (former owner) did tell me that prior to the S&S carb he had been having some trouble with the plugs getting fouled. The addition of the S&S seemed to cure that.
If I can figure out where the lean out screw is, I'll try adjusting that and see if it helps.
thanks,
Chris
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RE: question on hot start (or rather, the lack thereof)
I figured out which screw was which on the carb and adjusted the idle mixture screw so that the bike would idle without any choke. After I got it there, I shut the bike off and tried to restart it. It fired up on the first kick. When it cools down a bit I'll take it for a ride and see how it is under load, but for now the problem appears to be solved (fingers crossed).
thanks,
Chris
thanks,
Chris