GL 1500 wont run over 4500rpm

Information and questions on GL1500 Goldwings (1988-2000)
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Posts: 1
Joined: Mon Jan 25, 2010 9:08 pm
Location: Phoenix, AZ
Motorcycle: 94 GL1500SE

GL 1500 wont run over 4500rpm

Post by huskerdj » Mon Jul 08, 2013 12:45 am

my 94 1500SE is not feeling well, I recently pulled the engine and split the case because of a 4th gear issue (now have the tranny gears from an 02 Valkyrie installed)

while I had the engine out, I replaced the timing belts. now upon re-assembly, the bike wont run over 4500 rpm with no load on the centerstand. taking it out for a quick road test, it doesnt seem to have the neck-snapping acceleration it used to have in 1st gear, and the tach hits a little over 4500rpm before the revs drop down to about 4200 then come back to about 4500. I never used to have a problem with running it up and against the rev limiter, now it seems to have absolutely no power. I think its ignition related, 'cause I can smell unburned gas when it's cutting out.

looking for any suggestions, I don't think I'm off on my timing marks, but will be pulling the covers off tomorrow to check, will also be checking the ignition advance while I'm there.

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Posts: 7967
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: GL 1500 wont run over 4500rpm

Post by virgilmobile » Mon Jul 08, 2013 6:50 am

The ignition advance is electronic and is controlled by 2 things.The gear selector switch and a small vacuum tube from the right intake runner to the ECM.
Personally,I'd be looking for unhooked vacuum line after confirming the belt timing.

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