Question about 2011 Sym DD 50

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Bike starts, runs but then starts slowing down as if no fuel, I'm thinking coil but not sure!!

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U may hav a gas issue-carb needs ajust or clog at fawcett--its new so a service bullitin may be out-ask dealer or online--if spark was bad it wouldnt start

Posted on May 28, 2011


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I have a 2000 Heritage Classic. When I start the engine it will die if I don't keep the choke pulled out. Once I get on the road, I will push the choke all the way in, but the bike will die if I slow...

It sounds like the jets in your carb (if your bike is equipped with a carburetor) are clogged up if it's equipped with a carburetor. It's running off the main jet when going down the road but will not run good at slow speed or idle. It will run off the "choke" because it is not a choke, it's actually and "enricher". The two systems differ in that the enricher has it's own air passageway and draws fuel directly from the float bowl. Todays gasoline, with it's blend of ethanol, evaporates quicker and leaves more additives behind when it does. This thick syrupy looking stuff will clog the jets in your carb. You may be able to pour a can of fuel system cleaner like you would add to the gas tank of a car and clear it up but the chances are slim. Usually when this happens, you must disassemble the carburetor and soak it in a professional grade carburetor cleaning solution. If you're not comfortable with the removal and disassembly of the carb, I'd take it to a shop to have this done. If your bike is fuel injected, it is probably the same problem only I can't tell you anything about it. I know nothing about the fuel injection systems. I work on the older model bikes that the dealers will no longer work on like the Shovelheads , Panheads, and Ironhead Sportsters. I hope this helps.

Good Luck & Ride Safe.

Sep 10, 2011 | 2000 Harley Davidson FLSTC Heritage...

1 Answer

2004 Harley Davidson Electra Glide Classic Fuel Injection. Engine runs rough, sometimes on a single cylinder..backfires, chokes, runs ok when accelerating. When Gas tank is topped off (even if only one...

sounds like your fuel line inside tank has rubbed a hole in it on the side of the tank this is a common problem. Need to pull hole fuel unit out of tank to replace plastic line.

Sep 07, 2011 | 2004 Harley Davidson FLHTC - FLHTCI...

1 Answer

I recently got a 74 sportster 1000 reverse controlls. sat in a garage for 20 years bike not ridin bike is complete. Im mechanically inclined but not very good with bikes. So my terms an wording is probly...

Your terminology is off a bit but I'm trying to figure out what you say you have done. To start, the coil off the 82 model is the wrong coil for your bike. Your bike has a points type ignition and requires a coil with a primary resistance of 5-6 ohms where the 82 model coil is for an electronic ignition with a primary resistance of 2-4 ohms. If you know how to check the resistance of the primary windings on the coil, check and see what you've got.

But, if you had the bike running and after you put everything back together, you evidently shorted out the points. Use a test light and check for power to the coil. If you have power to the coil, check the black wire coming from the right side of the coil down to the timing cavity. Take the plate back off the timing cavity and see if anything is grounded that shouldn't be. Use the starter to spin the engine over and make sure the points are opening and closing.

Good Luck

May 18, 2011 | Harley Davidson XLS 1000 Motorcycles

1 Answer

My Yumbo Dakar 200cc bike dies after riding in 5th gear reving medium-highish for a couple of minutes, it usually just dies after i hit the clutch (coasting), but on long runs @ around 50-60mph in 5th gear...

I have a couple of ideas what may help.
First I would think it was starving for fuel.Or maybe an unusual ignition system fault- So how do we find out?
Well-you could try checking the bike for spark immediately after the bike stops.
Remove the spark plug-Re-fit to the cap-place plug resting on metal where you can see it(DO NOT HOLD PLUG-HIGH VOLTAGE)-kick over & check for spark.If theres no spark-try a new plug but if the problem persists then the bike has a faulty ignition(coil,cap,plug,stator.ignition/kill switch,wireing)
I think it is more likely starving for fuel.
A faulty fuel tank filler cap vent or carby vent tube pinched or blocked.
To check the filler cap-ride the bike & when the problem just starts-quickly crack open the fuel tank filler cap to let air in/out. If bike runs ok then the cap is blocked.
To check the carby vents -just look at them & make sure none are blocked or pinched.They usually come from each side of the carby & one from the bottom(usually clear or semi-clear hoses).
I hope that this helps you with your problem.
Regards Andrew Porrelli

May 17, 2011 | 2004 Yumbo Dakar 200

1 Answer

Engine will not start.Was running great one day ,Next day just would not start Checked for spark...seems ok.Checked for fuel ,seems okay Not sure about fuel pump.Put the fuel into a jar and fuel comes...

try a little starting fluid in a carb see if fires if the bike fires up then dies then start checking for fuel line from tank to carb for flowing if it gets down to the carbs and not flowing (not sure if your bike includes a auto fuel shut off or not) but the problem could reside in this location otherwise there could be water in the fuel bowls in which case you drain the cups hope this helps to trace down your problem

Mar 27, 2010 | 1993 Yamaha TDM 850

3 Answers

86 Shadow VT500 suddenly losing power/bogging down

first thing to do is to check fuel level. you mentioned about 290 miles since you owned it but no fillups. did you get gas from same store? not unusual to pickup trash or water in fuel from conv. stores. with that out of the way, look at your plugs and see what they look like. black and sooty would be fuel fouled and very white or very light tan would be lean. if plugs and fuel are eliminated, it could be the result of a stator coil starting to go south. these will require special tools to diagnose.

Oct 27, 2009 | 1986 Honda VT 500 C Shadow

1 Answer

Keeps makeing the motorbike cut out when running

these bikes have a habit of the coils breaking down if this is your problem you will find, 1 bike runs very poorly between 1 and 4000 revs, 2 after heating up gradually gets worse and 3 eventually (prob after 15 mins or so) the culperate coil completly breaks down and the bike wont start for a while, or until cool again. replace coil should be fine (there are 4 single coil packs test with an ohm meter to see which one it is think the tolerance should be bteween 7.5 and 9. or buy full set second hand) possibly a blocked breather on ur feul tank also check this first blow some compressed air up the breather to make sure it clear this can cause a vacum and prevent fuel traveling down to the pump, this would be an easy fix.

Jul 09, 2009 | 2000 Yamaha YZF-R6

2 Answers


Yes the coil does have to be bolted down to stay running but it still should fire.Think maybe you have the cam sensor not timed right or the distributor time right?Try and turn the distributor in different positions to see if maybe that s the cause..If it starts to back fire or buck or run slow the timing may be of..That would be the first to check..

I’m happy to assist further over the phone at

Mar 30, 2009 | 1996 Ford Thunderbird LX

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