Hard starting


Information and questions on GL1500 Goldwings (1988-2000)
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Maddogg
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Location: Fresno, ca.
Motorcycle: 1990 GL1500
1994 Suzuki 800 Intruder

Hard starting

Postby Maddogg » Mon Dec 23, 2013 7:05 pm



I am having a hard time starting my 1990 GL 1500 if I let it set for more than a 3 to 4 days. I usually run the battery down and have to put it on the charger again. Is it possible that the gas is evaporating from the carbs or leaking out so that the engine doesn't have fuel to start until I turn it over again after charging? That's the only thing I can think of. The engine starts right away after I put it on a 1/2 hour charge again, so I'm thinking that when I am trying to start it originally it is filling up the carbs but runs out of juice. Thanks for any help.

Bill



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ct1500
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Location: Glastonbury,CT
Motorcycle: 1988 GL1500
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Re: Hard starting

Postby ct1500 » Mon Dec 23, 2013 9:14 pm

Gas evaporating, no. Leaking gas out is possible but your garage would be smelling like a service station on a July day, does it? It is not uncommon for a float bowl gasket to leak on the 15 but both sides highly doubt it. Even if one side were totally out of gas the other would still want to fire up the engine.

There is a condition called release start on the 15. It will crank and crank but not actually start until starter button released. Next time you go to start, push button for 3 seconds only, repeat as necessary.
This is what I do
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virgilmobile
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Motorcycle: 1988 GL1500 I
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78 GL1000
81 GL1100
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84 GL 1200 I

Re: Hard starting

Postby virgilmobile » Mon Dec 23, 2013 10:25 pm

Or do like many others do.keep a battery tender on it when its gonna set for more than a day or so.
The 1500 REALLY likes a great battery.
When cranking with a slightly weak battery the ECM module supply drop below 10 volts and the spark gets really iffy.Thus the good spark as soon as you release the starter.

Another option is replacing the battery with a AGM type.

I'm cheap...I had rigged up the equivalent of a automatic booster for the ignition system and kept the old style battery.

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MikeB
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Re: Hard starting

Postby MikeB » Tue Dec 24, 2013 11:27 am

As Virgil says, keep a tender on the battery or replace it.
If you don't have a voltmeter that shows voltage all the time, it would be a great idea to install one.
MikeB
Tacoma, WA, USA

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virgilmobile
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Re: Hard starting

Postby virgilmobile » Tue Dec 24, 2013 4:10 pm

I'm thinking about that.I have a digital one on the bike now.One day when it was hard to start,even tho it cranked OK,the volt meter showed just 9.8 volts.No spark.

I'm formulating a add on to be wings left cluster that has not only a couple of switches but a mini volt meter too.

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Maddogg
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Location: Fresno, ca.
Motorcycle: 1990 GL1500
1994 Suzuki 800 Intruder

Re: Hard starting

Postby Maddogg » Wed Dec 25, 2013 12:12 am

It stays on a Battery tender junior when ever I am not running it. So it could be the battery, but sounds more like a fuel problem than battery. Remember, it starts right away after back on the charge. Almost like the bowls are empty and by cranking it fills the bowels with fuel. No garage does not have a gas smell.

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ct1500
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Re: Hard starting

Postby ct1500 » Wed Dec 25, 2013 1:26 am

A very simple test for an out of fuel situation.

Will require air box top removal. Twist throttle a couple times and if you have a pump squirt bowls are not empty.

You need to begin from ground zero with your start problem with proven diagnostics and not invent imaginary what if's.
This is what I do
Local and need repair help with your 1500, Valkyrie or ST please PM

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ct1500
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Re: Hard starting

Postby ct1500 » Wed Dec 25, 2013 1:33 am

Maddogg wrote:It stays on a Battery tender junior when ever I am not running it. So it could be the battery, but sounds more like a fuel problem than battery.


Have you tested your battery tender Jr. to make sure it is OK. Have you had the battery professionally load tested? Have you checked voltage of battery after a few days unattended?
This is what I do
Local and need repair help with your 1500, Valkyrie or ST please PM

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ct1500
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Re: Hard starting

Postby ct1500 » Wed Dec 25, 2013 1:51 am

Most motorcycle batteries I come across are sub par, yes they will work from point A to B when running but do they start right up after a couple days sitting, NO :cry:

They lose voltage. Which is a bad battery.
This is what I do
Local and need repair help with your 1500, Valkyrie or ST please PM

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virgilmobile
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78 GL1000
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83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Hard starting

Postby virgilmobile » Wed Dec 25, 2013 11:14 am

You could verify where the problem is by using a DVM attached to the battery while cranking.
It needs to stay above 10.4 volts.
If it's OK,there might be a problem with the vacuum fuel shut off valve.
Either a leaking vacuum line that feeds it or a pinhole in the vacuum unit.
It can be tested or bypassed for verification

STBear
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Re: Hard starting

Postby STBear » Fri Dec 27, 2013 3:48 am

I had the exact problem on my '88 1500. If it sat for a few days, it wouldn't start. I rebuilt the vacuum petcock and the problem went away.
Any landing you can walk away from is a good landing.
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landisr
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Motorcycle: 1976 GL1000
1994 GL1500A

Re: Hard starting

Postby landisr » Mon Dec 30, 2013 3:29 pm

I realize that many folks here shy away from jumping the battery, but next time you're in the crank but not start situation, jump it using a known good battery. Just make sure you have solid connections. If the bike starts right up, it's time for a new battery. This symptom is typical with a borderline battery.. Let us know how things go.

Ron in AZ


Beam me up, Scotty. There's no intelligent life down here.


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