GL1500 Engine Noise Update


Information and questions on GL1500 Goldwings (1988-2000)
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bbrackett
Posts: 134
Joined: Mon Oct 01, 2018 6:15 am
Location: Sedalia, MO
Motorcycle: 1988 GL1500

GL1500 Engine Noise Update

Post by bbrackett »



GL1500 Engine Noise Update
My 88 has 136k, I changed to 15-40 Rotella T6 and a Mobile1 filter, and put in about 10oz of Mystery Oil, in about 500miles my noises are almost gone,
1500miles later I noticed yesterday, that raising the idle to 1500rpm, the issue went away appears to be kind of an oil pressure thing, others have taken out the adjusters and the Honda Service book
says to clean and soak in Keroscene.. which I may do at some point..


bbrackett
Posts: 134
Joined: Mon Oct 01, 2018 6:15 am
Location: Sedalia, MO
Motorcycle: 1988 GL1500

Re: GL1500 Engine Noise Update

Post by bbrackett »

I was thinking about Seafoam and have used it in the carb, next oil change I try it in the oil

I think the issue is a culmination of a few things
1. a bit of the adjusters being gummed up
2. age/miles/hours on the oil pump so.. oil pressure maybe lower now ( need to install Oil Pressure gauge and check.. because if I raise rpm to 1500, now a single light tick is gone )
3. adjusters warn and allowing oil to blow by maybe..
4. left sides seem to be worse, and I haven't checked oil routing but if the LH head is last in the chain, then.. maybe it's due to things being a bit worn and allowing more oil to blow by.. ??

 given I only paid $250 for the bike ( no zero missing ).. I'm extremely pleased.. and wouldn't ride anything but a Wing !!

7/14/19 - 97,522 - When I bought it - Oil Change, Rear Diff Oil Changed, Splines Lubed, Fuel and Air Filter
9/11/2021 - 103,650 - Honda GN4 Oil & Filter
5/10 - 107,712 - HP4 Oil & Filter
9/1/22 - 112,000 - Oil HP4 & Filter
11/22/22 - 117,800 - HP4 Oil & Filter
01/28/23 - 120,800 - HP4 Oil & Filter
05/22/23 - 127,277 - HP4 Oil n NAPA Gold 1334
02.21.24 - 132,600 - HP4/NAPA Gold #1334
05.25.24 - 135,300 - Rotella T6 15-40 w/M1
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