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post #1 of 11 Old 12-31-2006, 2:45 AM Thread Starter
 
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Starting problem

Wondering if someone is familiar with this problem. If I ride my bike every day(2000 929), it starts perfect every morning. The problem is, when it sits for about 3 days, it will crank perfectly fine, but takes quite a while to fire and start. Not to the point of draining the battery or anything like that, but a long time. Say maybe 90-120 seconds of cranking before it fires. Once it starts for the first time, it's fine each and every time after until it sits again for a few days. I'm thinking maybe new plugs will help??? Not sure when or if they have been changed. Bike has 13000 miles on it and I bought it 2 years ago with 8000 miles. Any help would be greatly appreciated. Thanks.
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post #2 of 11 Old 12-31-2006, 4:49 AM
 
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Re: Starting problem

possibly a fuel pressure regulator problem,or the fuel pump return valve in the pump
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post #3 of 11 Old 12-31-2006, 10:19 AM
 
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Re: Starting problem

Are you *sure* its cranking fast enough? If your battery is sulfated, it will hold the charge, but won't put out 100% current. After a short time in storage, that surface charge is lost. It really makes a difference.
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post #4 of 11 Old 12-31-2006, 1:38 PM Thread Starter
 
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Re: Starting problem

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Originally Posted by dattaway View Post
Are you *sure* its cranking fast enough? If your battery is sulfated, it will hold the charge, but won't put out 100% current. After a short time in storage, that surface charge is lost. It really makes a difference.
It's cranking fine. In fact, just before putting it away for the winter, I did kill the battery a couple of times. It was the original battery and I replaced it. So I am now dealing with a new battery. It sounds normal, cranks normal....just takes so long to start after sitting for a few days.
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post #5 of 11 Old 12-31-2006, 1:41 PM Thread Starter
 
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Re: Starting problem

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Originally Posted by cwr954 View Post
possibly a fuel pressure regulator problem,or the fuel pump return valve in the pump
I have no experience with fuel problems unfortunately. But, why is it doing it only when it sits for a few days? Is that why you would indicate a fuel pressure problem? Losing pressure after sitting for so long?
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post #6 of 11 Old 12-31-2006, 4:24 PM
 
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Re: Starting problem

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Originally Posted by itsrhuf View Post
I have no experience with fuel problems unfortunately. But, why is it doing it only when it sits for a few days? Is that why you would indicate a fuel pressure problem? Losing pressure after sitting for so long?
im no bike tech but am an auto tech and 95% of the time this is the problem or a leaking injector but the leaking injector usually affects this when its hot resulting in a no start flooded condition
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post #7 of 11 Old 12-31-2006, 5:03 PM
 
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Re: Starting problem

A test you can do to see if the injectors are too lean for a quick startup, such as a fuel pump problem, is to fog the airbox with a blast of carb cleaner or starting fluid. I'm starting to think the suggestion about the fuel pump return valve or regulator may be on target.
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post #8 of 11 Old 01-01-2007, 10:12 PM Thread Starter
 
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Re: Starting problem

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Originally Posted by dattaway View Post
A test you can do to see if the injectors are too lean for a quick startup, such as a fuel pump problem, is to fog the airbox with a blast of carb cleaner or starting fluid. I'm starting to think the suggestion about the fuel pump return valve or regulator may be on target.
a friend and fellow 929er agreed with you guys about a possible injector or fuel problem. So, I guess I'll
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post #9 of 11 Old 01-01-2007, 10:13 PM Thread Starter
 
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Re: Starting problem

[quote=itsrhuf;563542]a friend and fellow 929er agreed with you guys about a possible injector or fuel problem. So, I guess I'll start there. I'm changing plugs this week no matter what, cuz I'm thinking it needs it anyway. Thanks for the advise. We will see what happens. Happy new year!
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post #10 of 11 Old 01-02-2007, 2:41 PM
 
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Re: Starting problem

check the fuel pressure on the rail after turning the key.
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post #11 of 11 Old 01-02-2007, 2:58 PM Thread Starter
 
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Re: Starting problem

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Originally Posted by C420sailor View Post
check the fuel pressure on the rail after turning the key.
Ok. Good idea. Will do. Thanks for the help.
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