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It sounds like you've already taken some important steps to address the issue with your Long 2360 tractor's popping sound at higher RPMs. Since you've changed the filters and installed new calibrated injectors, there are a few more things you can consider to troubleshoot and potentially resolve the problem:

Injector Timing: Even though the injectors are calibrated, it's possible that the injector timing is off for one or more cylinders. Incorrect injector timing can cause combustion issues, leading to popping sounds at higher RPMs. Ensure that the injectors are properly timed according to the manufacturer's specifications.

Compression Test: Perform a compression test on all cylinders to check for any variations in compression levels. Low compression in one cylinder could indicate issues such as worn piston rings, valves, or cylinder head gasket leaks, which can affect combustion and cause popping sounds.

Check for Air Leaks: Inspect the intake manifold and associated gaskets for any signs of air leaks. Air leaks can disrupt the air-fuel mixture and cause erratic combustion, resulting in popping sounds. Use a can of carburetor cleaner or a smoke machine to detect any leaks in the intake system.

Fuel System Pressure: Verify that the fuel system is maintaining adequate pressure at higher RPMs. Low fuel pressure can affect injector performance and combustion quality, leading to popping sounds. Check the fuel pressure regulator, fuel lines, and fuel pump for any issues.

Ignition System: Although your tractor likely has a diesel engine, ensuring that the ignition system components such as the spark plugs (if applicable), ignition coils, and distributor (if applicable) are in good condition can help rule out any potential issues with the ignition system.

Exhaust System: Inspect the exhaust system for any leaks or damage that could be contributing to the popping sounds. Exhaust leaks can create backpressure issues and affect engine performance.

Engine Timing: Verify that the engine timing is set correctly according to the manufacturer's specifications. Incorrect timing can cause combustion issues and result in popping sounds.

If you've checked all of the above and the problem persists, it may be beneficial to consult with a qualified mechanic or technician who has experience with Long tractors. They can perform a more in-depth diagnosis using specialized tools and equipment to pinpoint the exact cause of the popping sound at higher RPMs and recommend the necessary repairs.

50 Hp 3 cyl diesel with 500 hrs popping
Parts and Repair
Replies 2 Post by Caplight

I would check to see if you have bubbles in the hydraulic fluid when it gets hot.

Shibaura SP1540 hydraulic problem
Shibaura
Replies 5 Post by Caplight

FYI, my local dealer in SW New Hampshire quoted me $1565 for the Del Morino 39" offset for a BX2230.

Del Morino
Operating and Attachments
Replies 4 Post by Caplight

I ordered a BX2230 with FEL, 54"MMM, snow blower and tiller yesterday. Anticipated delivery for the tractor and FEL is 3 weeks. Anticipated delivery for the snow blower is 7! Cutting it pretty close here in New Hampshire... That FEL could come in handy long before I thought it would.

BX23 BX1830 BX2230 are coming
Kubota Tractors
Replies 42 Post by Caplight

FYI, In New Hampshire, I was just quoted $18,355 for a BX2230, 211FEL, 54" MMM, GCK60-BX grass catcher w/boot kit, BX2750A Snow thrower w/hitch and a Del Morino URT96E Tiller (allows offset tilling).

Good Price for BX 2200
Kubota Tractors
Replies 13 Post by Caplight

Thanks for all of your input and suggestions. I've tried a couple of other dealers in my area who never bothered to return my calls so I look forward to placing my order on Monday.<br>
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Again, thank you.

BX2230 Package
Kubota Tractors
Replies 7 Post by Caplight