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Post by chuckb1448 on May 1, 2011 19:11:20 GMT -5
Guys I took my Linhai 300 on the highway to blow the cobwebs out today and she wanted to spit and sputter up a long grade. I live in the Asheville, N.C. area and the roads in places are long grades up and down. I hit several with no problems but on my last leg towards home I was trying to pass a car and the old lady began spitting and sputtering. It made me a bit nervous and I let off the throttle and got back in behind mamaw climbing the hill. I am curious if anyone has had this problem and maybe could give me some advice as to what it might be. Gas... I just put 2 gallon in her when I hit the road. I also just changed the oil and the anti-freeze, and the spark plug. I am just wondering if its crap in the tank or does the scoot need to be checked by a "professional". This is the first time she did this.
Thanks, chuckb1448
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Post by o5b0rn3b on May 1, 2011 19:13:39 GMT -5
I would run some seafoam through her and see how she does.
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Post by shalomdawg on May 1, 2011 19:53:31 GMT -5
howdy, yup, not good feeling--- i'd check and make sure you got the plug tight and the wire on right and the right plug. doesn't sound like fuel problem to me, but could be i s'pose
lotsa miles and smiles to ya
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Post by tvnacman on May 1, 2011 20:00:11 GMT -5
sounds like a carb problem , install a new plug go fro a long ride then post a pic of the plug
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Post by edfr on May 1, 2011 20:08:04 GMT -5
Sputtering up a long grade sound like it was running lean with the load on it. How does it run when NOT going up a grade, does it sputter when you open up the throttle on it?
Need a little more detail info on how it runs not going up a hill.
Lefty
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Post by chaz12 on May 1, 2011 21:17:26 GMT -5
I would do a maintenance check. Meaning change plug, adjust carb, adjust valves, change oil, check air filter and clean sponge filter and than place fresh oil on it and damp dry it, add new gas to tank and start her up. Basics to keeping engine running like new.
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Post by rockynv on May 2, 2011 4:18:47 GMT -5
How long was it sitting idle before you blew out the cobwebs and how many miles on the bike and since the last valve adjustment?
While you may have gotten a dud when you replaced the spark plug chances are you have some crud in the carb.
For starters I would put a heavy dose of Seafoam or even better Berrymans B12 Total Fuel System Care (2 oz per gallon) in the gas tank and take it for a short run before letting it sit overnight. The Seafoam will clean the carb of crud and valves of carbon while the Berrymans B12 Total will also free up any sticky valves or piston rings.
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Post by chuckb1448 on May 2, 2011 14:27:16 GMT -5
well the miles on the bike itself is 810k, and I have rode it to Walmart just up the road oh probably 4 times since I had it out of my shed. I will check the spark plug again, I replaced it with one that scooterollie suggested on his post, the NGK Iridium plug - DR8EIX, NGK stock #6681, (a bone to Scooterollie by the way). I may have a small amount of too much oil in possibly, I am used to quarts and ounces not ml so ha ha I will have to drop an ounce or two, it is not much so I do not think that is a concern. I will run the items you guys mentioned. The carb, just turn the screw to the right a tad and the valves.. uhoh, I have never done that.. but I am willing to try it... ha ha I am not certain what to do but will investigate, Thanks for the advice. I will get back to ya
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Post by rockynv on May 2, 2011 20:10:01 GMT -5
Chuck - 810K = 810,000 miles, thats a whole lot of miles and if so it is time for a new scooter. Did youi mean 810 or 8,100 miles?
If 810 miles then you probably just need to treat the gas to take care of the winter crud and see how it goes from there. Get the Berryman product if you can.
If it is 8,100 miles then a valve adjustment is also in order if it has never been done before along with the gas treatment.
Before treating the gas if it is still the old stuff from last year siphon it out and put it in your car if you dare, fill the bike with fresh gas and then give it the Berryman treatment.
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Post by chuckb1448 on May 6, 2011 14:53:01 GMT -5
ha ha yes.. only 810 miles. My "b_tch" was in my ear about some bill when I was typing so no telling what i wrote! Update here: I drained the fuel or rather most of it and ive put a gallon of 93 octane in her. I cranked her yesterday and moved her about 50 feet so I could mow my lawn. Later in the evening I was gona hop on her and take her for a spin and.... Nothing. She would'nt crank, not even make a sound. I pushed her back and forth... put the key in and out a few times, and looked at the lights and stuff.. the turn signals were blinking off and on at my command for a moment and then all stopped electrically. I put a charger on the battery and left her on it all night. This morning I tried again and nothing. The starter relay was clicking and making a few sounds however next to the battery. I checked the load on the battery with my meter and it seemed to be holding. I did disconnect the battery for about ten minutes just in case for some reason a relay or whatever needed to be reset, and I put her back on and SHAZZAM.. SHE CRANKED! I let her run for about twenty minutes and she ran just fine. I was working on a flower bed in the yard so I walked by and turned it off and tried to start it again and...... Nothing.. no sound, no clicking.. nada. Went through the same routine I had done thirty minutes prior and nothing again! I have no idea what it could be but this could be what was happening with me the other day, just my opinion. Anyone have an idea? Sorry to be asking but im at a loss. Will go out and check all the fuses but if it was a bad fuse it would not have cranked earlier. Thanks
Chuckb1448
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Post by nulldevice on May 6, 2011 23:19:02 GMT -5
Take the battery and have it checked out. If that isn't the problem, it sounds like a problem in the battery/charging system to me. Start off by checking all the big fat wires and the small wires to the solonoid. Check the grounding wires and see if the brake light comes on when you squeeze the brake lever while trying to start it. A V.O.M. helps a lot.
Also, these scooters don't do significant charging at idle.
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Post by ez4u2say1 on May 6, 2011 23:22:59 GMT -5
yea sounds likw battery it probably died idleng
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Post by chuckb1448 on May 9, 2011 11:09:20 GMT -5
ok guys, I will take it off now and run and have it checked. I will let you know what I find out, thanks.
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Post by chuckb1448 on May 9, 2011 12:33:30 GMT -5
Just got back from Advanced Auto.... bad news (I cant believe im saying this, ha ha Ive never wanted a bad battery before) but the battery is fine, they said it was as good as new.. I walked out depressed, they looked at me like I was crazy ha ha. Okay.. what should I do... wiggle every wire I can get my hands on? I know where the starter relay is but thats about it. Like I said I have lights for a moment then everything stops working. This is the pits, I was ready to use this as an every day traveler.
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Post by ez4u2say1 on May 11, 2011 11:51:51 GMT -5
check voltage on stator bad connectors overheated or warped molex connectors are weak on these chinese scoots
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Post by drhat on May 12, 2011 15:42:42 GMT -5
check the 15 amp fuse in the battery compartment. make sure that the fuse isn't "loose" and is making solid contact with the metal tabs in the fuse holder.
this sounds just like what happened to my scoot at one time.
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Post by chuckb1448 on May 24, 2011 18:41:49 GMT -5
update on the Linhai 300:
Finally had some time to get on troubleshooting the bike problem. Actually did not take long. I removed the battery again and sanded the terminals to the wires and put it back together.. still no starting. I then wiggled and pulled on the hot wire and then the ground wires, then the bike cranked. So I must assume a short with the ground wire. I will narrow it down this weekend. Thanks for all the advice, I should always go the easiest route to troubleshooting but hey, when it wont crank you always think the bottom has fallen out, thanks again.
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Post by unclebuggies on May 26, 2011 8:56:57 GMT -5
chuckb, if yours is 2008 or newer then you have a vacuum-powered fuel pump. Might be fuel starvation uphil at high speed and full throttle. That's my problem and I'm putting in an electric fuel pump this weekend.
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Post by chuckb1448 on May 26, 2011 14:56:20 GMT -5
Hey unclebuggies, ive been trying to do a bit of research on the electric fuel pump thing, have mixed opinions just from the posts. I read a bit about the Mikuno (may have slaughtered the name) vacuum fuel pump and was leaning toward that. Have you found a fuel pump yet, if so let me know which one you purchased and how the installation went, from what I read it might be tricky. I may not have clarified myself properly on my last post here, the Linhai is running now, wiggled the ground wires and it cranked so I must assume it is a loose wire. I will find it and repair it. The bike I have is the 2008... Thanks Dawgs
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Post by unclebuggies on May 26, 2011 20:17:07 GMT -5
I haven't installed mine but I picked up the Mr. Gasket 42s at Pep Boys earlier this week. Gotta get that Spectre 2517 fuel regulator at Autozone, and some fuel tubing and clamps. It'll cost me about $70 once I'm done. We'll compare notes afterwards on the Mikuno vacuum pump versus electric. I thought about vacuum at first, but manifold vacuum drops significantly at high load and RPM, and I thought I might still end up with fuel starvation after spending $30 or more on that.
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Post by cloudsifter on Aug 13, 2012 16:24:01 GMT -5
So guys, how did the fuel pump change go, and results?
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Post by nulldevice on Aug 13, 2012 22:29:29 GMT -5
My Mikuni vacuum operated fuel pump works great. I had to put a bypass fuel return hose to the gas tank in the line after the pump because there was too much fuel pressure which upset the carburation.
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