Lack of power 85 ltd


Information and questions on GL1200 Goldwings (1984-1987)
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wingthing88
Posts: 47
Joined: Mon Apr 15, 2013 6:00 am
Location: Indianapolis, Indiana
Motorcycle: 1988 gl1500

Lack of power 85 ltd

Postby wingthing88 » Wed Aug 19, 2015 6:35 am



Hope someone can help. I have a friends 85 ltd he brought it to me last year as a nostart (bought it that way) I checked things out and found a bad pg. Someone else had been there before replaced the pg by modifying the mounting bosses. I replaced the pg and t-belt the bike started and ran ok a little sluggish but ok. Last week the fuel pump went out. I replace that and the bike runs bu is slow to accelerate. So I pulled the belt covers again to recheck my previous work and found nothing amiss. It acts like slow timing does the pg at the crank control timing also or is the timing controled by the pgs on the back of the right head. Should I try to move the pg at the crank. Bike idles smooth and runs out good just slow getting up to speed. Maybe I'm expecting too much I ride a 1500.



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Right Winger
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Location: Pittsburgh
Motorcycle: 85 ltd
84aspy

Re: Lack of power 85 ltd

Postby Right Winger » Sat Aug 29, 2015 10:41 pm

Did you check the ECM for trouble codes ?

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wingthing88
Posts: 47
Joined: Mon Apr 15, 2013 6:00 am
Location: Indianapolis, Indiana
Motorcycle: 1988 gl1500

Re: Lack of power 85 ltd

Postby wingthing88 » Sun Aug 30, 2015 4:01 am

Yes. There were no codes. I took the bike back to him and he test rode it and said it never ran better. I'm still not satisfied. It runs out great above 1500 rpm it's just getting to that point thats the problem. You have to slip th clutch alot to get going.

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virgilmobile
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Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
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83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Lack of power 85 ltd

Postby virgilmobile » Sun Aug 30, 2015 2:36 pm

Start the bike from stone cold.Idle only for 8 seconds and shut it down.Lightly tap each header pipe.Are they equally warm?

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wingthing88
Posts: 47
Joined: Mon Apr 15, 2013 6:00 am
Location: Indianapolis, Indiana
Motorcycle: 1988 gl1500

Re: Lack of power 85 ltd

Postby wingthing88 » Mon Aug 31, 2015 5:13 am

You know I must have had a senior moment! I don't know why I didn't do that first thing. I'll have to do that tomorrow when I stop by his house to see him. Thanks for tje kickstart more Wednesday.

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virgilmobile
Posts: 7649
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Lack of power 85 ltd

Postby virgilmobile » Mon Aug 31, 2015 12:48 pm

I didn't run a fuel injected 1200,mine was the carb,however I didn't have to slip the clutch very much to get underway.Once engaged it would pull hard to red line in every gear.
I don't remember ever having to rev the engine above 1k to get it to go.
As you open the throttle,vacuum sensors and throttle position sensors tell the module to adjust the pulse time to the injectors.
If all tests ok,don't forget about fuel pressure.Ive heard that if its in factory specs and there is still a bit of lag,one can adjust the regulator up a few pounds.Its downstream from the injectors.

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wingthing88
Posts: 47
Joined: Mon Apr 15, 2013 6:00 am
Location: Indianapolis, Indiana
Motorcycle: 1988 gl1500

Re: Lack of power 85 ltd

Postby wingthing88 » Mon Aug 31, 2015 1:55 pm

Thanks. It's all old school stuff that I used to do every day as an auto mech. But I'be been retired from wrenching for 15 years and sometimes just forget the basics lol. Normaly the first thing I do is a temp test of the headers I even had onebof those laser temp guages (til my grandson wanted to see how hot his bathwater was) bit I jist had a brain fart. Your help thus far is greatly appreciated. Thank you

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wingthing88
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Location: Indianapolis, Indiana
Motorcycle: 1988 gl1500

Re: Lack of power 85 ltd

Postby wingthing88 » Sat Sep 05, 2015 4:41 pm

Well I'm going to try this again. Sorry I haven't been back with a reply I've been having phone issues all week. Went to my buddys house and rechecked his bike all four cylinders have equal temp and it seems to be running better and he had a friends 84 for me to work on it ends up being a fuel pump too. Once I replaced the fuel pump it runs about the same as the injected model so I guess I'm jist so ise to my 1500 that I was chasing ghosts in my head. Thanks for the help guys.

donpauli
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Joined: Mon Jan 25, 2010 2:38 am
Location: Peoria,Illinois
Motorcycle: 1985 GL1200 Ltd

Re: Lack of power 85 ltd

Postby donpauli » Wed Oct 07, 2015 1:02 am

Hoping you didn't put fuel pump from carved bike on the ego one Mine LTD will keep up with my 95 SE EASILY THAT IS STRANGE HAVE HAD PROBLEMS WITH THROTTLE POSITION SENSOR CAUSING OFF IDLE PROBLEMS sorry for yelling had caps lock on

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wingthing88
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Location: Indianapolis, Indiana
Motorcycle: 1988 gl1500

Re: Lack of power 85 ltd

Postby wingthing88 » Wed Oct 07, 2015 5:34 am

I understand the caps issue. I finaly went throughthis thing wire by wire checked every connector anf ended up trying something that made no sense but some one else recomended, I switched the wires in the connector for the PG sensor it fired up and purred like a kitten and damn near pulls the front wheel off the ground. My buddy is happy happy happy.




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