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Post by Fox on Jul 27, 2014 15:23:56 GMT -5
Hi everyone. I'm trying to get my new girlfriends scooter running. Last registered in 2005 so it's been sitting for a loooong time. So far I have removed the center and rear plastic, drained fuel tank, oil tank was bone dry. Removed fuel line from fuel pump and there is a bunch of gum in the fuel pump inlet. I'm getting ready to go get some carb spray, some new gas and some 2T oil. I have repaired hundreds of carbureted scooters but I 've never worked on one of these fuel injected scooters before. I found a free service manual for SR50 but it's for the carbureted version so I am humbly asking those of you with experience in this type to tell me how to clear the fuel system/injector and anything else I need tio know/do before I press the start button. I will check back here when I get back from getting the gas and stuff. Thank you in advance.  |
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Post by Fox on Jul 27, 2014 21:26:33 GMT -5
Well I tried and failed. Took the injector piece off the head and took it all apart and cleaned it all out. There is a light on the dash that is on that says check injection. When I had the fuel line off the injector housing I turned the key on and cranked the engine and no fuel came out so I tried running 12 volts straight to the pump from the battery and nothing happened so it must be bad??? Hell I don't know. I gave up for now.  |
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Post by 90GTVert on Jul 29, 2014 7:10:23 GMT -5
Sorry Dave, I really don't know much about the injected scoots. Never been around one. If you're applying 12V to the fuel pump though and it's not working, I think you've found at least part of your problem. I looked for a manual for an injected model as well without success. Did find a couple of fuel pump repair vids though. www.youtube.com/watch?v=tpeAVu1B8yk#t=313www.youtube.com/watch?v=WuuJz5jNu60 |
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Post by Fox on Jul 29, 2014 14:34:32 GMT -5
Thanks for the links Brent! Gave me something to try at least. I hope that's the issue cause that pump is $180 on ebay. If the terminal "fix" doesn't work I'm wondering if I could get some other type of pump that's cheaper and adapt it? I'll do some research. Thanks again Brent.  |
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Post by 2strokd on Jul 30, 2014 2:45:53 GMT -5
Wish i could help more as well Dave. It sounds like you are on the right path though.. The good news is, once its fixed it will pay itself back off in mileage |
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Post by Fox on Nov 15, 2014 22:33:23 GMT -5
So an update to this topic:
I went to try and repair the old fuel pump and when I got it apart like in the video links Brent posted earlier in the topic, I found that the pump was toast. There was fuel in the motor's armature section so it was done. I ordered a new one for $180 and it arrived three or four weeks ago. I tried it and it was bad. The motor ran but no fuel came out the outlet at all so I sent it back and got a replacement sent out. $15 more dollars for shipping.
Fast forward to today: I install 2nd pump and it fired right up. Ran good but it got hot real quick so I check the thermostat and it's ok. So my friend suggests I remove the bleed screw on the thermostat housing for a few seconds while the engine is running. I do that and the temp gauge dropped to minimum almost instantly and stayed there for 5 minutes at idle. There is no radiator fan so I was impressed. I then reassembled the scooter and took it up and down the street at full bore a few times and it ran great so it lives again.
Likes: Runs strong for a 50cc, Good suspension and tires, Good wiring harness and quality components. Front and rear disc brakes.
Dislikes: Body panels are many and a hassle to remove/install cause they use a small Allen head bolt for most of them. Parts are ex$pen$ive as hell.
Next up is a good bath, Armor-all and a craigslist ad for this scooter. Gonna try to get $1,000 at least for it. Its got a lot of miles on it.
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Post by niz76 on Nov 15, 2014 22:42:20 GMT -5
Congrats! I'd like to see a pic of that scoot!
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Post by Fox on Nov 15, 2014 22:59:45 GMT -5
I'll post up some before and after pics. It pretty ugly right now. It got a lot of sun fade on the plastics, someone splattered some house paint on the front plastic and front wheel/tire and the seat cover is all tore up. I'm gonna try to re-do it myself with some kind of material. Cant look any worse than it does now right? It still needs a new battery and a new headlight bulb. This is a pic of one exactly like it. Same colors.  |
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Post by Fox on Nov 16, 2014 20:04:11 GMT -5
Here's a couple of before pics. I went to a fabric store and found some vinyl stuff with a cloth backing on it that looks like leather for the seat. I never did one before so I bought enough to do it a few times. I'm gonna do that tomorrow.   |
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Post by Fox on Nov 17, 2014 19:13:14 GMT -5
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Post by Sitticuss on Nov 17, 2014 22:15:06 GMT -5
That is one sweet looking scooter....The body is like a work of art......  |
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Post by Elektrey on Nov 17, 2014 22:59:37 GMT -5
nice job on the seat
Those SR50s are really fast scooters
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Post by jhobe6678 on Nov 18, 2014 5:34:34 GMT -5
Good job! Any chance you took some pics of you re-doing the seat? I'm curious. |
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Post by Fox on Nov 18, 2014 11:59:05 GMT -5
Thanks! I didn't take any pics of the seat in progress. I used a regular hand squeeze operated staple gun. I cut a square piece that was big enough and started on the back end of the seat working from the center outward so it was stretched side to side. Once I got the back end attached I stretched it down the center line and around the front end and tacked that with a couple staples. Then I worked the sides stretching and tacking till I got to the front again. I then removed the removed the two staples that I had used and worked the material till it looked decent and stapled it on there. Then the last thing is to trim the excess from underside perimeter with scissors. The front has pleats due to the horseshoe like curve. Nothing else I could do cause I don't sew.
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Post by jhobe6678 on Nov 18, 2014 12:58:38 GMT -5
Thanks! I didn't take any pics of the seat in progress. I used a regular hand squeeze operated staple gun. I cut a square piece that was big enough and started on the back end of the seat working from the center outward so it was stretched side to side. Once I got the back end attached I stretched it down the center line and around the front end and tacked that with a couple staples. Then I worked the sides stretching and tacking till I got to the front again. I then removed the removed the two staples that I had used and worked the material till it looked decent and stapled it on there. Then the last thing is to trim the excess from underside perimeter with scissors. The front has pleats due to the horseshoe like curve. Nothing else I could do cause I don't sew. Nice. Now all I need to do is find a staple gun and staples short enough to not poke through and stab me. |
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