2018 Savage S40 issues here, need some advice

What's up with these bikes and their difficulties starting from cold???

Its always crank and crank and crank and partial ignition, batteries weakens from trying...jumping the battery or leaving it on the trickle charger for a while. Try at it again and all the partial combustion heat the engine enough for it to magically run fine.

I cleaned out the carb (which was pretty much SPOTLESS anyway), replaced old and cracked fuel lines. Replaced petcock for the raptor mod, new air filter, new spark plug. Choke OUT at start up. Still just 0 luck when the engines cold...

Where should I be looking next? What can I do to troubleshoot this? I'm at my wits end with this bike.

Most frustrating part of this problem for be is that when the engine is at temp it runs perfectly. Holds idle, choke works correctly. Throttle good, no bogging down or power drops or anything out of the ordinary during ride.

I'd check the decompression solenoid.  Also, check the valve lash.  Is the spark plug the correct heat range?

Is it hard to start when the outdoor ambient temperature is cold, OR does it also do it when the the weather is warm and the bike isn't up to operating temperature?

https://suzukisavage.com/cgi-bin/YaBB.pl?num=1169356966

Th article link below explains it better than I can.  

Whatever you do, don’t put a dowel rod down in the spark plug hole and snap off a piece of wood in the cylinder.  You don’t want to nickname your bike “Woody” like I did.  I had to pull the head to get it out.  That was like a 97 page thread where DragBikeBike and Dave and a few others walked me through the process of pulling the head.


http://suzukisavage.com/cgi-bin/YaBB.pl?num=1278347767

Hopefully someone with more experience than myself can chime in.

Have you checked the condition of the spark plug (not fouled or getting wet)?

Are you sure you're not flooding it when repeatedly trying to start?

You said you are using the choke, right?  Have you tried not using the choke?

Do you know the size of your pilot jet in the carb?  I might be temped to try turning the air/fuel mix screw 1/4 - 1/2 turn richer and adjusting the idle speed higher.

Also verify that the enrichment jet air bleeds or not obstructed.

Make sure that the enricher passages are not obstructed.  Verify that the enricher air supply passage is clear and ties inro the enrichment mixture discharge hole when the enricher is opened.

This is where the air enters the enrichment system.

Verify that the fuel passage between the enrichment jet and the enrichment air passage is unobstructed.  Spray carb cleaner through this hole.  It should discharge from the enrichment jet previously shown.

Hope this helps.  Let us know how it goes.  Good luck.