Oil pump going out?


Information and questions on GL1500 Goldwings (1988-2000)
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Kevin Delaney
Posts: 4
Joined: Sun Oct 02, 2011 6:55 pm
Location: Magnolia, TX
Motorcycle: 1993 GL1500 Goldwing

Oil pump going out?

Postby Kevin Delaney » Wed Nov 02, 2011 7:40 pm



I have a 93 GL 1500 Interstate that has a couple of problems. First problem was it was hard to shift into second gear and low gear made a rattling noise when down shifting. All the other gears seem to engage and work fine. I read on here somewhere where possibly an oil change would help that. So I changed the oil and filter and put in Royal Purple 15w50 synthetic and a wix oil filter. A hundred miles later I have no oil pressure all the engine is rattling and the second gear thing came back 50 miles after changing the oil... So how hard is it to change the oil pump and can a novice to motorcycle mechanics do it successfully? Is the second gear problem and marble in the engine sound even related to this? Any help or advice would be appreciated.



Peppyone1955
Posts: 67
Joined: Sun Nov 29, 2009 8:52 pm
Location: Kearneysville Wv.
Motorcycle: 1994 GL1500A Aspencade

Re: Oil pump going out?

Postby Peppyone1955 » Thu Nov 03, 2011 4:54 pm

This is a Quote from the Manuel.
To remove the main oil pump and scavenging pump, perform the following:
Main Oil Pump: Scavenging Pump:
.. Engine removal .. Engine removal
.. Engine case separation .. Clutch removal
.. Rear case cover removal
" Primary driven gear removal

Sorry for the bad news. Good luck!

Kevin Delaney
Posts: 4
Joined: Sun Oct 02, 2011 6:55 pm
Location: Magnolia, TX
Motorcycle: 1993 GL1500 Goldwing

Re: Oil pump going out?

Postby Kevin Delaney » Thu Nov 03, 2011 11:00 pm

That seems to be a confermation of my worst fears... thanks.

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robb
Posts: 1040
Joined: Mon Jul 19, 2010 7:46 pm
Location: Lexington, North Carolina
Motorcycle: 1989 Honda GL1500 Aspencade

Re: Oil pump going out?

Postby robb » Fri Nov 04, 2011 8:16 am

If all was good for first 30 minutes it may be the oil 50w is too thick. Might want to try a 10w30 before removing the engine.

iridenxs
Posts: 7
Joined: Tue Mar 08, 2011 9:28 pm
Location: Tulsa, Oklahoma
Motorcycle: 1999 GL1500 SE, 158,000 miles and running strong!!

Re: Oil pump going out?

Postby iridenxs » Fri Nov 04, 2011 12:12 pm

I would lean more towards the oil as well. consider adding some seafoam to the new oil, run for a while, change oil again to see if old sludge is built up somewhere hampering the oil pickup process. With fingers crossed!

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virgilmobile
Posts: 7659
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: Oil pump going out?

Postby virgilmobile » Fri Nov 04, 2011 12:36 pm

Does anybody know if the 1500 uses a cleanable oil pickup screen like the 1100? It may be plugged up.

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robb
Posts: 1040
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Location: Lexington, North Carolina
Motorcycle: 1989 Honda GL1500 Aspencade

Re: Oil pump going out?

Postby robb » Fri Nov 04, 2011 7:29 pm

If this is the first time with synthetic in this bike did you use a motor flush. When changing from dino to synthetic a flush is highly recommended to remove all deposits. If not, the synthetic will break it up and circulate it through the system allowing it to collect where least expected.

Kevin Delaney
Posts: 4
Joined: Sun Oct 02, 2011 6:55 pm
Location: Magnolia, TX
Motorcycle: 1993 GL1500 Goldwing

Re: Oil pump going out?

Postby Kevin Delaney » Sat Nov 05, 2011 6:45 pm

Synthetic is all thats been used in this bike which is why I kept on using it. I did the seafoam flush but got no results... So the bike has 101k on it so I am just having it completely rebuilt but I am going back to dino oil on the rebuild. I did find out that the oil pump has a screen and that is probably whats stopped up but just opted for the rebuild to solve the shifting issues as well. Thanks for all the input!

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MikeB
Posts: 1226
Joined: Fri Dec 04, 2009 12:54 pm
Location: Tacoma, WA
Motorcycle: 1998 - GL1500 Aspencade.
2003 - GL1800A

Re: Oil pump going out?

Postby MikeB » Sat Nov 05, 2011 9:12 pm

Who's wisdom is this?
robb wrote:If this is the first time with synthetic in this bike did you use a motor flush. When changing from dino to synthetic a flush is highly recommended to remove all deposits. If not, the synthetic will break it up and circulate it through the system allowing it to collect where least expected.

Highly recommended by whom? No quality technician I know of would ever recommend an engine flush. Flushing an engine only invites trouble. Never get an "Engine Flush" - Here's Why...http://www.nbclosangeles.com/news/local/flushservices.html
MikeB
Tacoma, WA, USA

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robb
Posts: 1040
Joined: Mon Jul 19, 2010 7:46 pm
Location: Lexington, North Carolina
Motorcycle: 1989 Honda GL1500 Aspencade

Re: Oil pump going out?

Postby robb » Mon Nov 07, 2011 4:29 pm

It was recommended by Amsoil when I started using it. Harley dealer recommended it for sporsteras well as Yamaha for Vstar and Ford dealer for my deisel. The only way to remove deposits from an engine that run non synthetic oil is to flush before the first use. It is cheaper than letting the synthetic do it.

We are not talking about an engine flush for the sake of flushing. Synthetic is useless when placed in a dirty engine. I only said the first time a vehicle is changed to synthetic.

Kevin Delaney
Posts: 4
Joined: Sun Oct 02, 2011 6:55 pm
Location: Magnolia, TX
Motorcycle: 1993 GL1500 Goldwing

Re: Oil pump going out?

Postby Kevin Delaney » Tue Nov 08, 2011 9:37 pm

Rob I agree and that is the same advice I gave when I ran an automotive shop. Flushes are only preventitive when changing from conventional oil to synthetics. Other than that I only used to sell them on really slugged up engines that were abused and not well maintained. The case with my bike is that the oil has been a synthetic for years and religiously changed every 6 mo or 3000 miles. So thats what the puzzle was when I lost pressure after the oil change. But the mechanic found a stopped up oil screen and the clutches were pretty worn so... 2+2 = trouble for me...lol




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