2015 Phazer, no start, backfiring

[Alberta Farmer]

The backstory. Son was riding, hit a stump which pitched the machine into a fence post, laying on its left side, Front bumper took most of the abuse. No one hurt, no apparent damage except for the bumper. Never lost oil pressure, didn't need to prime the oil pump as usual. Went to start it again, and it took a lot of cranking, then wouldn't idle. Limped it back, stalled twice more, and finally stalled right in front of the shop and would never start again, except with a lot of throttle, then backfire and stumble away briefly. Raw fuel coming from exhaust even catches on fire down underneath.

First thought was stuck injectors since it has done this to us every year, so without bothering to diagnose, I took them to town and they cleaned with ultrasonic, no change, same as before.

Replaced plugs with known good used plugs, tested coils using on board diagnostics, both spark.

Cleared existing codes, (13,22,25,30,84) None came back. Some were probably set while having it apart and testing.

Tried most of the diagnostic modes, and what seems unusual is the air pressure sensors don't change readings while cranking. Both read 88 constantly (3000 ft elevation).

Not sure this has anything to do with the crash, or just a coincidence. Checked all the wiring that could have been exposed, and all look fine.

Where to now?

 

[ATV PRO #11]

First off thank the big guy above no one hurt.

Couple things come to mind here.
1) the little hoses under air box. Possible both popped off (codes 13-25)
2) did you start up right away after tipping back up. (Code 30) hopefully it didn’t run long in its side. Oil gathers in head and could cause problem. They sell an anti tip valve or something for that reason. Hopefully the main guys will chime in one that.
3) being 15 Phazer there’s a little plug that will cause a no start (yes I’ve forgot to plug in once) doubt it came unplugged on its own tho but possible.

 

[ATV PRO #11]

Under air box, just left of oil filter.

 

[Alberta Farmer]

Found the problem. I tried to start it again, and watched where the fire(literally) from the backfire was at, turns out it was on the front of the engine, not the back, so I removed the air filter box again and checked, turns out the throttle bodies had been knocked completely off of the intake. Which also explains why the pressure never drops when diagnosing. And those clamps are miserable to get to...

Thanks for the advice, I was looking for the plug you mentioned when I found this.

 

[ATV PRO #11]

Wow. That’s a hit. First I’ve seen that one.
Good catch.