Initial starting issue
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Road Warrior
Joined: Aug 2009
Posts: 1,287
Likes: 592
From: USA
Initial starting issue
So on my ultra classic when the engine is cold I hit the starter and it turns and turns. Usually takes 3-4 attempts before it starts. Runs fine after it starts and usually starts right up after its warm. Occasionally it will just turn when hot and back fire extremely loud. It used to just start right up. Any ideas what's going on?
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Road Warrior
Joined: Aug 2009
Posts: 1,287
Likes: 592
From: USA
I do let the fuel pump prime before hitting it. That was one of my first thoughts too so I made a concious effort to pay attention to that first. The battery is original so 3 years old. It does seem a bit weak if it's on the compression stroke but other wise seems to turn really good.
Grand HDF Member
Joined: Jan 2012
Posts: 4,458
Likes: 2,875
From: Oklahoma
Things you are keeping secret: 500 miles or 50,000? Miles and recency of spark plugs and fuel filter. Any recent engine work? Stored outside (in the rain) or inside? A recent garden hose wash job or long ride in the rain? How long have you had the SE tune and did this begin when you got it or not? Have you ever disconnected the fuel line from the gas tank? Any recent change of handle bars or grips?
What we KNOW. Your bike doesn't start as easily as it used to. You want to know why and what to check.
What we KNOW. Your bike doesn't start as easily as it used to. You want to know why and what to check.
Ultimate HDF Member
Joined: Feb 2009
Posts: 5,132
Likes: 228
From: Garland, TX
I do let the fuel pump prime before hitting it. That was one of my first thoughts too so I made a concious effort to pay attention to that first. The battery is original so 3 years old. It does seem a bit weak if it's on the compression stroke but other wise seems to turn really good.
Elite HDF Member
Joined: Dec 2007
Posts: 4,271
Likes: 29
From: Green Country,Oklahoma
A simple volt test after your bike has been sitting all night will tell you if your battery is good. Should be at least 12.8 volts
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Thread Starter
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Road Warrior
Joined: Aug 2009
Posts: 1,287
Likes: 592
From: USA
Things you are keeping secret: 500 miles or 50,000? Miles and recency of spark plugs and fuel filter. Any recent engine work? Stored outside (in the rain) or inside? A recent garden hose wash job or long ride in the rain? How long have you had the SE tune and did this begin when you got it or not? Have you ever disconnected the fuel line from the gas tank? Any recent change of handle bars or grips?
What we KNOW. Your bike doesn't start as easily as it used to. You want to know why and what to check.
What we KNOW. Your bike doesn't start as easily as it used to. You want to know why and what to check.
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Seasoned HDF Member
Joined: Mar 2010
Posts: 38,535
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From: Honah Lee
da tuner but what ever you do, when you hit the start, keep cranking for at least 20-30 seconds. Cranking, stopping and start cranking makes a FI start problem worst even if there is no start problem.. Just don't overheat starter if it's that bad. That hot and back fire extremely loud is a sign of fuel that happens to spray into cylinder with a little valve overlap and gets dumped into exhaust doing a back fire. Depends on were the motor stops, can happen to them all. Mine does it couple three times out of 10 starts.
Things get pretty complicated for your brief description or user ability. How many miles since a plug change?
Complicated..could be your combination MAP/Temperature sensor on the very simple throttle body that is throttle by wire controlled (not cable). 32319-07 $90 part
Things get pretty complicated for your brief description or user ability. How many miles since a plug change?
Complicated..could be your combination MAP/Temperature sensor on the very simple throttle body that is throttle by wire controlled (not cable). 32319-07 $90 part
Last edited by Jackie Paper; Aug 21, 2016 at 04:39 PM.