09 dragon trouble shooting

peaceofwork · Dec 11, 2017

Before ordering a voltage regulator or other parts I want to try disconnecting the hand warmers and also disconnect the kill button at the plug and jump that and to test the teather, to test if the sled would then have spark. I got the plastics off the sled and am hoping some one can tell me what's up with this process, what colours are the kill button wires?
How do I identify the grip warmer wires?
My electrical skills suck so I'd sure appreciate a rundown on a few little tests before kicking out cash.

peaceofwork · Dec 11, 2017

Last day of running it started running crappy and stalling and taking a few minutes to restart. It made it back to the truck and now sitting cold it has good compression and no spark. New plugs change nothing, I pulled the voltage regulator and find bumps or bubbles on the bottom so I suspect it's been hot.

cascadesnowjunky · Dec 11, 2017

A tale tell sign of a voltage regulator out is you can pull the ecu and look at the back and it will most likely be melted.

zalez · Dec 11, 2017

The newer VRs fail with the symptoms you describe. It will run poorly, it will die and take awhile to start back up. This is an attempt to keep from frying the ecu. I would start there.

peaceofwork · Dec 11, 2017

looking at eBay aftermarket voltage regulators ? Or should I bite the bullet and just get the updated genuine Polaris 4013587 opinions ?

retiredpop · Dec 14, 2017

I don't know if the aftermarket regulators have the feature built in to them like the 4013587 Polaris regulator that if it fails it won't take out the ECU. I know there is quite a price difference between aftermarket and OEM regulators but ECU's are expensive. I'd go with the Polaris.

peaceofwork · Dec 14, 2017

i orderd the genuine polaris one a few days back and just praying the ecu will still be good

cascadesnowjunky · Dec 14, 2017

Most likely your ecu is out also. If you continue to run them with a bad VR it takes out the ecu rather quickly. What leads me to believe this is you stated it now has no spark.

RMKillR · Dec 15, 2017

Working a 09 dragon 800. Same symptoms. Had original VR. Pulled the ecu and inspected the back. Melted. Fried

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peaceofwork · Dec 21, 2017

Voltage regulator is in and the sled runs now 4 or 5 pulls is a bit much though?
I notice I have smoke blowing out the vent tube distal to the solinoid from the power valves so let's hear what's up with that.
I have 60 psi fuel pressure and a new fuel filter.
I put in br9es spark plugs --- possibly iridium plugs might help?
120 compression
I'm thinking I should check the TPS but I'm open to ideas guys

sledhed · Dec 22, 2017

Smoke out the hose from the exhaust valve solenoid at idle is normal. Iridium plugs won't make it start any better IMHO than a good set of standard plugs. If it still seems hard to start compared to an equivalent sled, setting the TPS correctly might make a difference, not sure where else to look as long as compression is good... if someone else had an ECU for the same motor and injector color, it would be a good test to temporarily swap out the ECU and see if that helped.
:juggle:

peaceofwork · Dec 23, 2017

cascadesnowjunky said:
Most likely your ecu is out also. If you continue to run them with a bad VR it takes out the ecu rather quickly. What leads me to believe this is you stated it now has no spark.

Their was no spark at all untill I put in the new voltage regulator, the ecu seems to work but I guess it could be a question of how good?

peaceofwork · Dec 23, 2017

Can anyone point me to a TPS adustment thred?

zalez · Dec 23, 2017

It's buried in this thread

https://www.snowest.com/forum/showthread.php?t=67427

peaceofwork · Dec 23, 2017

What kind of idle speed is topical? I'm seeing 14/1500 on this 09 dragon 800 on startup and it don't respond to the reverse button except maybe to stall

zalez · Dec 24, 2017

1600 .+/- 200 RPM. If reverse isn't working, try to get your idle to above 1600.

retiredpop · Dec 24, 2017

peaceofwork said:
What kind of idle speed is topical? I'm seeing 14/1500 on this 09 dragon 800 on startup and it don't respond to the reverse button except maybe to stall

It will stall if engine is not warmed up a bit first on the first start of the day.

XCaSSAULT · Dec 27, 2017

If u still have last years gas in then it’s a good ideal to put in some fresh stuff. I was chasing a hard start issue (10 plus pulls) and assumed since I had used stabilizer that couldn’t be it. After fresh gas 2 pulls. I almost started digging into the tps and a whole world of other things.:face-icon-small-ton

peaceofwork · Feb 13, 2018

Good thought on the fuel Xc, it's been out two full days from the time of replacing the voltage regulator.
It's reported to have intermitant bouts of no top end that could happen at a hill or on the flats, so I have ordered a fuel filter and would like to replace the plug caps and wires. Any ideas on what NGk part # caps to order?

peaceofwork · Feb 13, 2018

Xc the fuel idea makes sense but the sled has been out running 2 long days from when the voltage regulator was done so the older fuel must be burned up by now.
I ordered a new fuel filter and am looking on eBay at NGK spark plug caps, theirs lots of choices .

09 dragon trouble shooting

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