Gator XUV 620i - intermittent loss of power, rough idle - John Deere Gator Forums
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post #1 of 2 Old 07-12-2019, 12:47 PM Thread Starter
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Join Date: Jul 2019
Location: Mount Croghan, SC
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Gator XUV 620i - intermittent loss of power, rough idle


I would like to share how I fixed an annoying intermittent loss of power while driving 5-10 minutes, as well as rough idle, and poor performance.

- added sea foam to oil, and drained after 15 of warming engine up - LOTS of black gunk drained out
- replaced oil with full syn 10w30
- replaced spark plugs with NGK brand, pre gap per specs
- removed throttle body completely, and cleaned the inside with throttle body cleaner.
- removed fuel pump, and ran carb cleaner through it a few times without fuel. Let sit for 20 minutes, and took a wrench to tap a few times. - this fixed the fuel pump whining/humming noises
- removed fuel injectors, replaced all o-rings.... rigged up a hose to fuel injector inlet, and sprayed carb/choke cleaner through it while supplying voltage.
- removed fuel tank, and replaced grommets, unclogged the excess fuel drain tube, cleaned out fuel inlet sock
- added 93 fuel, with 3 oz of sea foam

The machine now runs perfect! Like new almost!

Last edited by Alan J Mathers; 07-12-2019 at 12:50 PM.
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post #2 of 2 Old 07-12-2019, 02:48 PM
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Join Date: Aug 2015
Location: Lander WY
Posts: 2,226
Awesome write up Alan!!

Thank you for taking the time to document your solution.

2012 Gator 825i (new engine at 1700 hours) Power Steering-Sport Exhaust- Deluxe Cab-Heater- Work Lights On Top Front And Rear- Hella HID Driving Lights-Warn ProVantage 4500 synthetic winch-Electric Dump- Gillmore Seat Covers
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