Fuel Pump Issues? HELP
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Cruiser
Joined: Aug 2010
Posts: 118
Likes: 0
From: Sunshine State
So i found a blown fuse. On the cover it lists it as "P and A"? Little 10amp fuse. Replaced it. Still nothing. Unplugged ecm fuse for 15 mins. Nada. Got power going up to the tank. So it looks like I'm gonna have to replace fuel pump. Haven't pulled it yet, but did do all the other options suggested. I'll keep you posted.
Stellar HDF Member
Joined: Jan 2013
Posts: 2,721
Likes: 103
From: St. Louis, MO
It's suspicious to me that you fixed the hose then the pump goes bad? You seldom hear of these pumps going bad I'm wondering if you pinched a wire under the pump cover by mistake when you closed it up. I'd check for busted wires before I bought a new pump. Easy enough to pull the pump now that you know the trick. I've reused my bolts and gasket a few times with no problem btw.
Stellar HDF Member
Joined: Mar 2006
Posts: 2,395
Likes: 153
From: Utah
So i found a blown fuse. On the cover it lists it as "P and A"? Little 10amp fuse. Replaced it. Still nothing. Unplugged ecm fuse for 15 mins. Nada. Got power going up to the tank. So it looks like I'm gonna have to replace fuel pump. Haven't pulled it yet, but did do all the other options suggested. I'll keep you posted.
If you had a 'blown' fuse in that slot I would have some concerns as to who has been fooling with the bike's wiring... which brings forward other concerns. If you didn't fail the fuel pressure bleed down test you didn't have had a leak in the hose... replacing a fuel pump using HD parts is not a cheap adventure... and you can't return it if it wasn't the problem.
You can pull the pump and bench test it... but if it runs, don't let it run for long and watch out for spray. These are HIGH PRESSURE systems, not a 350 carbureted chevy.
There is no fuel pressure sensor on a Harley... so a bike will run even when the pressure is low... until it starts having problems starting or accelerating. Once the pressure starts dropping getting stranded with no pressure is only a matter of time. You can hope that this is your issue that you found somewhere near where your bike is usually parked .
As to the fuel gauge and the pump on the same circuit, mine has four wires and two circuits. One for the pump and one for the fuel level sending unit... because of the ECM control and so they are on two different circuits I suppose.
C#
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Cruiser
Joined: Aug 2010
Posts: 118
Likes: 0
From: Sunshine State
So, finally had the chance to work on her and then take her for a ride. Put a piece of hose between fuel pump and filter and she was running smooth. Problem was, she had no getup and go. Took a friend for a ride and with me and her on the bike, it was not going very fast. Was told she wasn't getting enough gas. Apparently the rubber hose I put on wasn't letting enough fuel through. So, after fruitless searches in my area, I went to the stealership. They wanted $40 for that little hose! Couldn't do it. Wound up in Lake City today so I figured I'd stop by Columbia County Cycles just to see it it was any better. If you've never been, I highly recommend it if you're in Lake City, Fl. Danny in there sold me that hose for $2! Seems the type of guy that WANTS to help people get back on the road. So I'll be replacing the hose, again, this evening. And I thought this would be an easy fix!
Road Warrior
Joined: Jun 2013
Posts: 1,781
Likes: 50
From: Louisville, KY
So, finally had the chance to work on her and then take her for a ride. Put a piece of hose between fuel pump and filter and she was running smooth. Problem was, she had no getup and go. Took a friend for a ride and with me and her on the bike, it was not going very fast. Was told she wasn't getting enough gas. Apparently the rubber hose I put on wasn't letting enough fuel through. So, after fruitless searches in my area, I went to the stealership. They wanted $40 for that little hose! Couldn't do it. Wound up in Lake City today so I figured I'd stop by Columbia County Cycles just to see it it was any better. If you've never been, I highly recommend it if you're in Lake City, Fl. Danny in there sold me that hose for $2! Seems the type of guy that WANTS to help people get back on the road. So I'll be replacing the hose, again, this evening. And I thought this would be an easy fix!
Would be good to see photos of what's installed now and the one you've bought.
Stellar HDF Member
Joined: Jan 2013
Posts: 2,721
Likes: 103
From: St. Louis, MO
I'm thinking that the regular hose kinked given the short turns it has to take in the tank. That's likely why HD put on the plastic hose they did, it can't really kink they way it's made.
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Road Warrior
Joined: Jun 2013
Posts: 1,781
Likes: 50
From: Louisville, KY
That is more plausible than the hose being sized too small.
Stellar HDF Member
Joined: Jan 2013
Posts: 2,721
Likes: 103
From: St. Louis, MO
Sure - the part that each end of the hose hooks to is the same as the ID of the hose - I cannot imagine he somehow found a hose that necks down in the middle. But regular hose could surely kink in the tight confines of our gas tanks, the way the filter mounts.