2007 bergman 400 suzuki scooter cranks but does not start. Battery loses power after about 5 seconds of cranking. I tried giving it some throttle but that didn't help. I am charging the battery again....

bad fuel, or partially clogged air or fuel filters.
or fuel system has gunk clogging things up, needs cleaning.
there are lots of causes but bad fuel tops list for common on all MC that do not get run every day or week.

When you put your key in, don't turn it all the way but to the point where everything powers up. You should hear a hum from the lower rear that lasts about 3 seconds. That's the fuel pump. If you don't hear that, it could be the fuel pump.

Try looking under the seat. A Friend of mine had a scooter and that's where his was.

you cranked the battery low.
ever do the 60k tuneup on the engine? with timing belt, per operator guide?
if not BOOM !

which engine in this Daewoo/GM-Holden/Suzuki wonder box.
what country was it sold to.?????? usa, ?
did you use a scan tool cranking (battery charged) to see if you get
ERRORS?

if car is a USA car, IS IT?
it has (wiki quote)
The US model line features the 2.0 L four-cylinder E-TEC II made by General Motors, developing a maximum power of 132 horsepower at 5600 rpm.

this engine is listed as INTERFERENCE.
and as such bends the head valves over with the timing belt fails.
its luck thing, like walking cross street blindfolded..
some make it.
here is what you forgot, see cam timing parts... here.

http://navigates.gates.com/Parts.aspx?Year=2006&Make=Suzuki&Model=Forenza&Engine=4-Cyl.+2.0+L&Class=Passenger+Cars+%26+Light+Trucks&Type=Passenger+Cars


all comments based on USA GM engine.

not sure what you said but.
seems the battery is discharging,? 12.6v is fully charged,
own a voltmeter?
try a good loaned battery , does it start the car,?
i think you meant?
i can jumper cable start my car at any time. (off another running car)
but after running my car, the battery discharges and it will not crank at all. right?
this means ,the charging system on your car is bad.
if the starter cranks great, then the engine is flooded or is in great need of a tune up (sparkplugs etc)
if flooded try the super secret in the op guide, crank with throttle wide open , this magic trick cuts all fuel injection allowing the flooding
to purge away, and eventual starting.
my guess 2 is the car wont start, so you crank the battery flat
you jumper start it and it runs. (luck)
then day 2, same deal cranks ok but wont start.. ever tune up the engine?

you should first do a full inspection before you try to get it running. If this is the case, I'd do a compression check first because it's easy to do. First, check the quantity and condition of the engine oil. Hook up or purchase a good battery. Leave out the spark plug and crank the scooter for ~5 seconds. This helps to circulate the oil. Let it set for ~15 seconds and then do it again. It's not a good idea to continuously crank the starter because it can overheat and wear out prematurely. Most scooters need a minimum of 100 psi in compression in order to run start and properly. Compression should be checked when the scooter engine is warm. However, that's hard to do if your scooter is not running. So, just hook up a compression gauge and open up the throttle all the way. Crank the scooter until the needle on the compression gauge stops moving. This should take no more than 5 seconds. Very roughly, 100-125 psi is good, 125-150 psi is very good, and 150+ psi is great. If you don't have this level of compression, then you have bad valves and/or bad piston rings. If you want, you can add a teaspoon or so of oil to the engine through the spark plug hole. Then try the compression test again. If compression is higher, then it's likely you have bad rings. The oil will seal the rings and give you better compression. If compression is the same, then you have bad/misadjusted valves.

hope this helps

John

scooter head light reach up above front fender under plastic front end sometimes works on Chinese if not you will have to disassemble a few pieces on the front end.i used to mechanic in a scooter shop but looks from the pics i see just reach up into the space above the front fender and feel for the center wires on the bulbs push in and twist the connector and it pops out. [email protected] if you need a walk through

Suzuki dealer should be able to order one for you for $20.

I had the same problem on my VL1500. I THINK it gets "flooded" with fuel and then the cylinder is full and will NOT turn. I have used jumper-cables to start the bike when it will not turn over.

I now start my bike with this procedure:
1. Do NOT touch the throttle.
2. Switch on the power.
3. Do NOT touch the throttle.
4. Press the "Start" button and crank the engine a little (1 - 2 seconds)
5. Do NOT touch the throttle.
6. Keep cranking the engine (another 1 - 2 seconds)
7. Open the throttle a VERY LITTLE (approx. 1/10 turn of throttle). keep the throttle slightly open while the engine cranks.
8. Keep cranking the engine and wait for engine to start (another 1 - 10 seconds).

It is still not a perfect start, but at least the engine cranks over now.

Remember that the VL1500 has a "decompression" system that opens the outlet valve for 2 cranks of the engine.

I suggest you FIRST make sure the engine cranks over (NO throttle), and THEN concentrate on starting the big V Twin.