2005 Brute Force 750 Turns over, No Fire
2005 KVF750A. Her name is Tina. I find naming my machines helps to keep my patience with them.
The short of it: quad will crank just fine. Has spark. Carb is getting fuel and plenty of air. Will not fire on raw gas or carb cleaner.
ATV belonged to dad before it came in to my possession a few months back. It was put away outside in the summer of 2016 with no cover. To the best of my knowledge it was running when it was parked. She was left with ethanol fuel in her. Well, hunting season 2017 rolled around and it was time to start it up again. Should start right up right? Noooo... TIME TO BREAK OUT THE STARTER FLUID! Not sure of the details of the events that ensued but the end result was an ATV that caught fire bad enough that a flaming air filter was removed and a fire extinguisher was sprayed down in to the intake. The cover was replaced and Tina sat until I was called to relieve dad of her this past summer.
Where my story begins:
Tina was pushed off of my trailer, cleaned with a low pressure wash (electric pressure washer) taking care not to get water in to anything sensitive and making sure it was dried thoroughly before being pushed in to a climate controlled garage. Upon inspection, there was no start. Dead battery. Pulling the pull start revealed that the pistons had seized. Air box was toasted but still intact. Carb was crusted and the valves on both sides were seized. A rebuild was found not to be possible after I disfigured one of the carb valves getting it unstuck. Oil was nasty but didn't appear to have anything in it out of the ordinary. Belt light was triggered but nothing wrong with the belt after removing the cover.
What I did:
-Replaced carburetor with a used ebay purchase
-Rebuilt said carb with a kit (needle, jet, seals, etc) blowing out the galleries with compressed air
-Poured seafoam first then marvel mystery oil in to the cylinders through the plug holes to soak for 3 days
-Removed belt cover and used front clutch to free the motor
-Replaced oil (twice now)
-Drained gas tank by pumping from the filler tube and NOT out of the pump
-Replaced Air cleaner assembly with used ebay purchase
-Replaced carb boots on both motor side and air cleaner side
-Attempted a belt light reset unsuccessfully but I think I may have mistaken the "not tripped" for the "tripped" position.
-Refilled with straight gas
-Cranked the motor and tested that fuel is getting to the carb by pulling the fuel hose at the "T"
-Cranked motor with carb attached and shooting carb cleaner in to the intakes without the airbox on. No fire
-Tapped rollover sensor. Disconnected then reconnected and retried. No fire
-Checked fuses for continuity. All tested fine. Retest. No Fire
-Pulled fuse box and checked connections. Seemed clean. No corrosion. Hit connectors with air and dielectric grease and reinstalled. Retried. No fire
-Pulled plugs and grounded on block. Both have spark. spark tester with plugs installed showed same.
-Cranked with a spoonfull of gas down each carb. No fire
Cranks usually last anywhere between 10 and 30 seconds with 20-30 minutes in between attempts to allow starter to cool. Exhaust seems clear and thin white smoke comes out when cranking from there and up through the carb. Out of ideas here. Fuel, air, spark. Check check check. Just not sure if I'm getting enough of each. What should I do?
Thank you all for any help.
2005 KVF750A BONE STOCK
-Pro Taper Bars
-Back up lights
-Racked Light Bar