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GL1500 starts hard after a long rest.

3106 Views 19 Replies 16 Participants Last post by  kcid
I have a hard time starting my '98 wing after it sits for a long time (a couple of weeks). I have a trender on it and the engine spins over really good but it doesn't seem to get gas to fire up. Does anybody have any solutions for me.
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Search for gl1500 hard starting and you will find many ideas. Most seem to be from a low charged battery issue.
I have a hard time starting my '98 wing after it sits for a long time (a couple of weeks). I have a trender on it and the engine spins over really good but it doesn't seem to get gas to fire up. Does anybody have any solutions for me.
The float bowls are probably empty, due to evaporation or leakage.

If it's Leakage, then you'd have to install new carb seals, or maybe just tighten the drain screws.

Another thing to try is to only crank for perhaps 2-revolutions, then get Off the starter button... Many have discovered that the engine will start right up at that point, due to suddenly getting enough charge to fire the plugs (where-as they sometimes won't fire while engine is cranking). Try that and report back.
After a two week layup I'd think the only problem he has is that the gas has evaporated from the float bowls and it takes a few seconds for the fuel pump to re-fill them.
Or the obious solution. Ride it more!
I'd love to ride it more but I have 6foot snow banks beside my driveway.
Our bike will do the same thing, give the throttle a quick twist bout half way before you first turn it over with choke about 2/3 on, like mentioned earlier only hit the starter button in bout 3 sec intervals, it should fire right up for you....
Our bike will do the same thing, give the throttle a quick twist bout half way before you first turn it over with choke about 2/3 on, like mentioned earlier only hit the starter button in bout 3 sec intervals, it should fire right up for you....

Typical 1500 phenomomen, after two weeks the float bowls evaporate.
The following only really works good IF you keep a battery tender on the battery.

Otherwise, I have had to jump the battery with a car battery to do the following (car engine OFF)

Suggested 'right method' is to put the 'choke' Full On
1: twist throttle fully open, wait 2 seconds
2: crank engine 3-5 seconds and release starter button.

Repeat 1 and 2 while allowing 5-10 seconds rest between efforts.

Typically the scenario you describe requires my '98SE to make 3 or 4 tries and sometimes 5 tries to get it started.

Starting it up every 3 days will reduce that problem, but is poor practice because of water build up.

There is a way to jury rig a 1500 to make it a first time every time start-up:

You bypass the vacuum operated fuel shut off valve, then apply 12V directly to the fuel pump itself. This requires removing the seat though and is a PITA.

A very few have made a mod to resolve this start-up problem:
1: replace the vacuum operated fuel shut off valve with an electric one.
2: use a spring loaded, single pole, double throw switch to turn on the fuel pump. Switch the pump on for a minute to fill the carb bowls and release.

Hit the starter switch and it starts the first time.
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What works best for me is to pump the throttle several times with the choke on full. Then give it a couple of second "burst" with the starter. If it won't go repeat, then repeat etc. Just cranking for long periods of time and it might start but this saves on starter issues.
yeah thats really normal for any carburated bike, their is an accelerator pump, so just twist the throttle a few times to work the accelerator pump, and open the choke all the way might have to crank and pump the throttle a few times, the fuel evaporates from the carb bowles over time, might be due to the 10% ethanol and water thats in the gas these days.
For what it's worth if the float bowls are empty you can twist the throttle till the cows come home to no effect as there' no fuel there to pump.
I don't think it's a matter of the float bowls being empty that is the issue. At least not in that short time period. After only a few weeks the aromatic parts of gasoline can begin to evaporate making the fuel less volatile. To make up for that loss the engine can require more fuel to fire properly. The evaporation is common to both the fuel bowls and tank but because of the smaller volume in the bowls it looses volatility quicker. Most if not all vehicles of today have sealed fuel systems to help the issue with the tank etc. The carbs are always vented to atmosphere directly or through a charcoal canister.
Au contraire mon frer. Twisting the throttle allows fuel droplets to be fed from the two brass tubes at the carb throats. Just enough gas to start, and hopefully pull fuel to the bowls to keep running.
When mine was doing that, after only several days, I could smell gas in the garage from when I parked it and for about 3 days. This was a matter of a seal on the float bowl allowing the gas to leak out. The tell tale sign was the smell of gas for an extended period of time after shutting it down.
It took me a while to find the right combination to make my 95 start. I had the same problem, I have a 95 and a 99, I ride the 99 most of the time so the 95 sits. I do have a battery tender on it. I need to twist the throtle to full open and return then about a one second push of the start button. Once in a while it takes a second push of the start button.
When mine was doing that, after only several days, I could smell gas in the garage from when I parked it and for about 3 days. This was a matter of a seal on the float bowl allowing the gas to leak out. The tell tale sign was the smell of gas for an extended period of time after shutting it down.
Oldwing is there away to look or inspect the float bowls without pulling carbs?
Did you replace the float seals yourself?
I'm sure there is a way to inspect it but no, I had a mechanic do the work. Others on the forum will have the experience and might address that.
I like the idea of priming the carbs by running electricity to the pump. My 84 will go a month with no problems. Longer then that (winter) I spray either into air filter. Wonder why honda didnt wire pump to come on with ignition like new cars are
had same issue with my 1500, just turn throttle a few times with full choke on then a couple of short bursts on the starter and it cured it !
I'd love to ride it more but I have 6foot snow banks beside my driveway.
I moved the snow from mine, but now the battery is dead....:wtf::hoppingmad::leprechaun:
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