1200 LTD fuel injection update


Information and questions on GL1200 Goldwings (1984-1987)
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voyager1
Posts: 9
Joined: Fri Jan 20, 2012 9:31 pm
Location: Lancaster, PA.
Motorcycle: 1985 GL1200 LTD

1200 LTD fuel injection update

Postby voyager1 » Tue Mar 27, 2012 12:36 pm



Been a while since I last made a post about the fuel inj. problem. You can check back through the tech forum to see what I did. After many weeks of searching and trial and error I got it. Bike runs real well now. It appears after replacing the coil an getting it to run on all 4 it still had a lean condition on the bottom end. I had already replaced the fuel pressure reg. but that didn't help so I put an inline fuel shutoff in the return fuel line so you could "tune" the fuel flow. Instantly fixed the problem and bike seems to be running great with no adverse affects. Thanks again for all the help guys.



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virgilmobile
Posts: 7646
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: 1200 LTD fuel injection update

Postby virgilmobile » Tue Mar 27, 2012 12:41 pm

So effectively increasing the fuel pressure on the injectors to overcome a lean condition?

voyager1
Posts: 9
Joined: Fri Jan 20, 2012 9:31 pm
Location: Lancaster, PA.
Motorcycle: 1985 GL1200 LTD

Re: 1200 LTD fuel injection update

Postby voyager1 » Tue Mar 27, 2012 5:37 pm

Seems to have worked that way. The fuel pressure was spot on static+ running before doing this. It only had the lean condition after it was warm. It was a cheap fix, $5-6 at the auto parts store. I tried a pair of vise grips first to see what it would do.

User avatar
virgilmobile
Posts: 7646
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: 1200 LTD fuel injection update

Postby virgilmobile » Tue Mar 27, 2012 5:56 pm

It must be mapped that way in the computer.Probably fine for the fuel of the day,but 20% less bang,it takes a bit more fuel.Hmmmm,makes me wonder if the ECM can be modified or adjusted,maybe even tricked to think the engine is cold so it keeps the injectors open longer.
Too much thinking.How about increasing the pressure by modifying the regulator.once you know the pressure on the rail......well,whatever works :)




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