97 gas issues, stalling, hard starting


Information and questions on GL1500 Goldwings (1988-2000)
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RBGERSON
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had every year from 75 to 83

97 gas issues, stalling, hard starting

Postby RBGERSON » Mon Nov 19, 2012 8:59 am



I don't have a good definitive scenario but here goes. First my gas mileage has never be good high 30's at best usually low 30's generally around town driving stop and go..with some 50-60 mph steady trips thrown in...10 to 15 miles at a time. Since it has gotten colder 50's in the A.M. I have to use the choke to starter her(temps in the 80's a.m. NO choke needed) and keep her running at idle..moves idle up to 1,000-1,500 for a few minutes. I put some sea foam in and have run her about 100 miles on that..no change. Yesterday for the first time after it was totally warmed up 30 minute ride..as I was idling around a parking lot it stalled..now it could have been me, not enough gas and too much clutch release but that would be a first for me.

Anyway low gas mileage..shouldn't I be getting closer to 40 MPH and hard starting/stalling on morning start ups or am I just expecting too much???

Almost forgot when I use the choke and push it more than halfway down the bike surges the rpm's jumps up and down sitting at idle between 1000 and 1500+ very noticeable...without the choke being engaged no surging.


HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

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wiredgeorge
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Re: 97 gas issues, stalling, hard starting

Postby wiredgeorge » Mon Nov 19, 2012 10:58 am

First, you don't have a choke on your Keihin carb assembly... you have enrichener circuits on each carb body. The lever on the handlebar says CHOKE but a true choke is a butterfly plate in the venturi that limits airflow to enrichen the mixture while the enrichener system is a different animal. It consists of a plunger that is pulled out when you actuate the "choke" and extra gas flows from the bowl through this circuit and that gas is mixed with the gas from the pilot circuit. The extra gas is required as a richer than normal mixture is needed to allow the bike to start. These systems don't like your hand on the throttle while they are working as this takes away the vacuum needed to provide the extra gas. In other words, better to allow the bike to start and warm a bit and then take it off "choke" before riding. If your bike is hard to start, this is a pretty common problem these days. Before digging into your carburetors, try changing your fuel filter and if that doesn't help, try starting the bike with the gas cap cracked to ensure that the cap venting is functioning as it should. if it isn't, gas won't draw. If neither of those things helps, you may need some new pilot jets as the current mixture of gas and mazzola corn oil causes gas to pick up moisture quickly AND gum up quickly. It is possible to sometimes clean pilot (Keihin calls them slow jets) jets but if you stick anything through them you can inadvertently open up the jet size OR mess up the chamfer needed to diffuse the spray of gas into the venturi.
wiredgeorge Texas Hill Country
1997 GL1500SE Roadsmith
2002 Triumph America
1976 KZ900A4, 1977 KZ750B2, 1978 KZ1000A, 1980 KZ1000E
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RBGERSON
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had every year from 75 to 83

Re: 97 gas issues, stalling, hard starting

Postby RBGERSON » Mon Nov 19, 2012 12:11 pm

tHANKS..I knew the choke is not a "choke" but easier to use that name..my gas cap does suck air when i open it..I'll try leaving it a little loose..any comments on the mileage or surging when the choke is engaged?
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

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dingdong
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Re: 97 gas issues, stalling, hard starting

Postby dingdong » Tue Nov 20, 2012 8:04 am

From your description, I don't see a problem at all. Sounds like every other 1500 I have seen or worked with. Mileage is average for a 1500. Choke operation seems normal to me. ???
Tom

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

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RBGERSON
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had every year from 75 to 83

Re: 97 gas issues, stalling, hard starting

Postby RBGERSON » Tue Nov 20, 2012 9:30 am

I hear lots of guys talking about getting 40+ on 1500's ??? Not so???
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

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WingAdmin
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Re: 97 gas issues, stalling, hard starting

Postby WingAdmin » Tue Nov 20, 2012 9:17 pm

RBGERSON wrote:tHANKS..I knew the choke is not a "choke" but easier to use that name..my gas cap does suck air when i open it..I'll try leaving it a little loose..any comments on the mileage or surging when the choke is engaged?


Every 1500 surges when the choke is engaged, at least when it's partially engaged.

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RBGERSON
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Re: 97 gas issues, stalling, hard starting

Postby RBGERSON » Wed Nov 21, 2012 12:35 pm

OK on surging..now what about normal gas mileage on 1500's around town 30 to 45 mph..stop and go at lights only..not stuck in traffic puttering along.. is 35 mpg all I can really expect??? and less than that sometimes..
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

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virgilmobile
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Re: 97 gas issues, stalling, hard starting

Postby virgilmobile » Wed Nov 21, 2012 3:36 pm

My88 is about 35 .average in town/highway.150 mile before fill up.It's been there for 8 months and 5k miles.
I also ride 2 up and loaded with junk in my trunk.
I could probably get 40 if I cleaned it out,dropped of the wife and went real easy on the throttle...but what's the fun in that.I like to hear that squeak once in a while from the back seat. :lol:

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RBGERSON
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Joined: Tue Mar 09, 2010 7:57 am
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Motorcycle: 98 SE GL 1500
had every year from 75 to 83

Re: 97 gas issues, stalling, hard starting

Postby RBGERSON » Wed Nov 21, 2012 4:29 pm

Yep, trunks full of stuff..tools, oil, flat fix, gloves, towels, and........
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

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WingAdmin
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1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: 97 gas issues, stalling, hard starting

Postby WingAdmin » Wed Nov 21, 2012 6:03 pm

My right saddlebag is full of tools, spares, etc. My trunk is for gloves, helmet, sunglasses, etc. Left trunk I leave empty for whatever.

I get 35-40 mpg in normal commuting (mostly highway). If I do a long-distance ride, not too many hills, cruise control at around 65, I top out at around 45 mpg. Towing the trailer I get around 30-33 mpg.

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RBGERSON
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Joined: Tue Mar 09, 2010 7:57 am
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Motorcycle: 98 SE GL 1500
had every year from 75 to 83

Re: 97 gas issues, stalling, hard starting

Postby RBGERSON » Thu Nov 22, 2012 7:26 am

Thanks for the info.
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

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artgrantz
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Re: 97 gas issues, stalling, hard starting

Postby artgrantz » Fri Nov 23, 2012 9:06 am

dingdong wrote:From your description, I don't see a problem at all. Sounds like every other 1500 I have seen or worked with. Mileage is average for a 1500. Choke operation seems normal to me. ???

I agree with this.

zipperdog
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Re: 97 gas issues, stalling, hard starting

Postby zipperdog » Thu May 02, 2013 10:18 pm

40 mpg only rarely for me




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