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Cleaning fuel pump - is it possible ?

  • Thread starter Thread starter Florida Guy
  • Start date Start date
F

Florida Guy

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My G has only 2,500 miles, and sat for a long time before I bought it. P/O rebuilt carbs, and ran it for about 500 miles before it came to me.
I rode only about 50 miles before the fuel pump stopped working.
I'm thinking maybe it's gummed-up.
Has anyone tried putting some cleaner into a pump to make it work again? Someone told me they did it, and the pump started working again.
I'll know in a few days if this method works.
 
huh???
pump??
what pump??
ok i will research but i didnt think a G had a fuel pump.
pre-injected GSXR'S was gravity feed only:confused:
 
blowerbike said:
try:
http://www.gsx1100g.com

says the site is down but soon to re-open.
ive never worked on a late G model.
i had no idea they had a pump:confused:
Click to expand...

That site has been out for a few years. I guess the guy running it didn't have the time.
I am on the Yahoo! GSX forum and some of those guys said my pump may be saved.
 
Last edited:
Is the pump serviceable? Can you take it apart and clean it properly instead of using snake oil?
 
Well, it can't hurt.

I've degummed carbs by draining the gas and filling with carb cleaner for a few days. Techron works especially well.
 
Is it a vacuum-operated pump or electric?

A vacuum-operated pump (as used on the VX800) shouldn't be exposed to carb cleaner, since the chemical will damage the rubber diaphragms and such inside.

An electric pump, I dunno. I'd still start by flushing with something milder than carb cleaner if possible.
 
bwringer said:
Is it a vacuum-operated pump or electric?

A vacuum-operated pump (as used on the VX800) shouldn't be exposed to carb cleaner, since the chemical will damage the rubber diaphragms and such inside.

An electric pump, I dunno. I'd still start by flushing with something milder than carb cleaner if possible.
Click to expand...

It's electric.
 
give it a few taps, if it starts working the brushes are probably sticking. in that case its probably best to replace it.
 
+1 on the few taps. I had a electric fuel pump on my 85 madura. When I got the bike, it was balky. Gave it a few taps with hammer and cleaned contacts, came back to life. Test it by pulling off outlet hose and applying power. Most have a quantity delivered spec but if it is pushing a full sized stream you are usually good.

I had found on that bike, once it had reached pressure it would shut off. This made it hard at first to know if it was working. I also ran into trouble with getting it primed again after running out of fuel. I ended up wiring a switch to manual run pump in this situation. Will have to admit, this was prior to fixing the previous owners overly rich carb settings. Made it a real pain to start.

How do you like your newer G? I test drove one that had been abused with a ragged slipping clutch and almost bought it still. Looking for one in future.:)
 
waterman said:
+1 on the few taps. I had a electric fuel pump on my 85 madura. When I got the bike, it was balky. Gave it a few taps with hammer and cleaned contacts, came back to life. Test it by pulling off outlet hose and applying power. Most have a quantity delivered spec but if it is pushing a full sized stream you are usually good.

I had found on that bike, once it had reached pressure it would shut off. This made it hard at first to know if it was working. I also ran into trouble with getting it primed again after running out of fuel. I ended up wiring a switch to manual run pump in this situation. Will have to admit, this was prior to fixing the previous owners overly rich carb settings. Made it a real pain to start.

How do you like your newer G? :)
Click to expand...

Thanks for the info.
I like the G. I had a new one in '93, and bought this one a few months ago because it is such a nice bike. It's big and strong, and I like the shaft.
 
jeeeeeze! I just checked and that puppy is $226usd. you could get a small generic one and a regulator from autozone for a fraction of that.
 
Did you check the relay?
Connections?
Is it getting power?

Disconnect fuel lines to carbs and direct into container and unplug electrical connectors or jumper the relay and give pump direct power and see if it works.
 
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