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Stock EVO hard to start when hot

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Old Aug 13, 2021 | 07:23 PM
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Default Stock EVO hard to start when hot
I have a 1999 Fatboy with 14xxx miles on the dash. Stage 1 intake and drag pipes with lollipop baffles. Runs great. I’ve rebuilt carb and replaced ALL the intake and exhaust seals and tested for leaks. Good to go. My question is, after riding for a while and I **** the motor off for a few minutes then try to restart it seems hesitant to start. Fuel vaporizing? It will start just not as crisp and hard as when she’s cold. Also I notice it’s worse if I idled for a min or two before shutting off. Running CV carb. 45 slow jet. new choke cable and plunger. Fuel screw about 2- 2 1/4 out.
 
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Old Aug 13, 2021 | 08:44 PM
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Do a compression test and post up your numbers, remember to hold the throttle wide open pull the power off of the coil and 7 full revolutions on the cranking...
 
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Old Aug 13, 2021 | 11:00 PM
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Originally Posted by 98hotrodfatboy
Do a compression test and post up your numbers, remember to hold the throttle wide open pull the power off of the coil and 7 full revolutions on the cranking...
This. Make sure its at operating temp when testing.
 
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Old Aug 14, 2021 | 04:05 AM
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When you say "hesitant to start"...do you mean turning over slow with hesitation, then "catching", or turning over strong but not firing off right away..??
 
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Old Aug 14, 2021 | 05:12 AM
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Originally Posted by Firedude2
This. Make sure its at operating temp when testing.
No, you want to do this test cold....
 
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Old Aug 14, 2021 | 05:17 AM
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Originally Posted by guido4198
When you say "hesitant to start"...do you mean turning over slow with hesitation, then "catching", or turning over strong but not firing off right away..??
”

”turning over” fine but not firing off right a way. It’s like a “lazy “ start best I can say.
 
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Old Aug 14, 2021 | 05:20 AM
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Originally Posted by Fblo1690
”

”turning over” fine but not firing off right a way. It’s like a “lazy “ start best I can say.
I miss understood your previous post. The best I could make of your description was that when hot it was hard starting as in turning over hard....
 
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Old Aug 14, 2021 | 09:19 AM
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Originally Posted by 98hotrodfatboy
No, you want to do this test cold....
i would do it hot as that was when he was having the problem. Then compare to cold.
 
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Old Aug 14, 2021 | 10:09 AM
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Originally Posted by Fblo1690
”

”turning over” fine but not firing off right a way. It’s like a “lazy “ start best I can say.

Ok extended crank time sound right?
Can you smell gas fumes as in a rich condition at the exhaust ?

WP
 
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Old Aug 14, 2021 | 10:19 AM
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Originally Posted by WP50
Ok extended crank time sound right?
Can you smell gas fumes as in a rich condition at the exhaust ?

WP

yes. Correct
 
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