Forum - Briggs & Stratton Racing
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mball19

Registered: 12/11/13
Posts: 11
Reply with quote  #1 
My world formula won't start. It is getting fuel and the spark plug is making a spark. I tried it with the choke up and down I tried adjusting the screw on the side of the carb. I removed the air filter and the I fuel coming out of the jet near where the air filter mounts. Any ideas how to get it started?
BriggsRacing1

Registered: 06/22/11
Posts: 188
Reply with quote  #2 
Spark and fuel are your number one and number two things to stat with.  From there I will throw a couple ideas at you.  I'm assuming that your fuel is known good?  Change your spark plug?  In a rare, rare case they can spark under no load but not under the load of cylinder pressures.  If this is the case with you buy two lottery tickets, one for you and one for me.  Unlucky can turn to luck. lol

Pull the ground wire to the ignition module and see if this solves the problem.  I suspect it might.  If the ground has a short you are just grounding the system.  Do this in a safe manner on a stand and you can pull the spark plug wire to shut the engine off. 

Is the spark plug boot clipped on the top of the plug.  Sometimes in our haste (me included) we hear a snap and its the clip just pinned against the plug.

If you are getting fuel you might just have flooded the engine.  Pull the plug, change it out or let it dry off.

Start with that and let me know if that works?


RiverRat

Registered: 01/18
Posts: 1
Reply with quote  #3 
Having the same issue with ours...we tried the ground and plug...no flooding. any more ideas
BriggsRacing1

Registered: 06/22/11
Posts: 188
Reply with quote  #4 
River and Mball,
                     What applications are you running this in?  How old are the engines? Has ANYTHING changed from when it worked to when it stopped?  Was the engine recently out of the vehicle?  Did it happen after charging the battery or putting a new tach lead on, anything?  Did you change the spark plug and still have the issue?   

There always is a cause and effect.  The PVL system is robust system.  Has your spark plug gap OR ignition to flywheel gap closed?  

Have you asked anyone at your track who races one for help?  I am all for throwing ideas out but having a hands on approach, even being able to see the engine, might highlight the issue.


       
mball19

Registered: 12/11/13
Posts: 11
Reply with quote  #5 
I have searching locally for a new plug. When I get one, I will see if it is fixed. I haven't changed anything since the last time it was used a couple of months ago. My engine is on a go kart for autocrossing. Mine doesn't have a tach or a battery, just a pull start.
BriggsRacing1

Registered: 06/22/11
Posts: 188
Reply with quote  #6 
Mball,
       I will send you a new plug.  Lets just like to get to the bottom of this so you can go back to racing!  Email me at BriggsRacing@basco.com your address.
mball19

Registered: 12/11/13
Posts: 11
Reply with quote  #7 
I received my jet kit from Kart-o-rama. I was very impressed with them. I ordered it Monday afternoon and it showed up at my house yesterday (Wednesday). Washington state to Georgia in two days through the USPS.

It came with 4 main jets and 2 pilot jets. I was wondering which ones I should use. I am at 0 elevation and it is typically hot and humid here. I read about someone with similar weather running the 100 main jet, which is what I was going to start with. I want the engine making as little power as possible since my 8 year old is going to be driving the kart.
mball19

Registered: 12/11/13
Posts: 11
Reply with quote  #8 
I finally got it started yesterday. I changed both jets, spark plug and checked all my gaps. Nothing seemed to work until I sprayed some sea foam in the carb yesterday and it fired up. I had to adjust the idle some but, it seems to be ok.
FasterMotorsFasterMotors

Registered: 06/15/11
Posts: 47
Reply with quote  #9 
Glad to hear you got it running.
Are you sure you had fresh gas in the tank?
Sometimes you have to pull the rope many times to get fuel from the tank up to the carb.
What i do is put a piece of fuel line over the vent in the fuel tank and blow into the tank to push fuel up to and into the carb.
As a result, I often have the engine start on the first pull.
Have fun.

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http://www.fastermotors.net
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BriggsRacing1

Registered: 06/22/11
Posts: 188
Reply with quote  #10 
Great point Jim.  We have worked around and around on this one because it's so hard to problem solve without having your hands on it.  I'm glad to see it started.........now fun can be had!
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