It seems to have come on fairly quickly, and when I first noticed it, the mower was running weakly until I heard a sound . Air in the fuel system - Air bleeding. Apr 6, 2010. I am a firm believer in not looking to make a simple problem complicated. Holding the plug wire and seeing if a spark jumps to ground is inconclusive. The Bobcat S770 is equipped with hydraulic wet disc brakes and 12x16.5-12 tires. After the new injector nozzles the machine operated properly for two hours and then had the same symptoms again. One was brown. It starts and runs fine but loses power under a full load. Location. Problem just started recently but i find when mowing taller grass even at a slow speed the engine bogs and loses rpm. My Riding Mower Backfires & Has a Loss of Power. Engine The Bobcat loader has a rear-mounted diesel engine. After the engine warms, the choke opens and a normal air-to-gasoline mixture moves through the carburetor. Grass was maybe 6 inches or so. The exhaust smells like its running lean. I know my way around gas engines pretty darn well and I've owned 2 diesel engines but have only done basic maintenance on the diesels so I am literally a novice when it comes to diagnosing diesel engine issues. The governor hunts a bit on power with no load and the idle speed is low about 700 rpm. Jul 1, 2011. I recently bought a used Miller Bobcat 225G. I have a CountryClipper Zero-turning radius mower with a Kawasaki 23 hp engine FH680V. I cant find any screws on the carburetor to adjust the mixture. Often the loss of power is accompanied by an increase in pump noise, especially as the pump tries to build up pressure against a load. May 12, 2012. I cant find any screws on the carburetor to adjust the mixture. 1) Put on a new cam run lift pump mounted to engine 2) Added an electric lift pump in place of the primer ball (pull through pump so I can leave it off if I want) just to see if the cam itself was worn out operating the cam lift pump (process of elimination). I have had it a little over 2 years and it has less than 100 hours, which for a commercial grade mower isn't much. I have a 25 HP Kohler (1800 hrs) on a gravely 60 zero turn mower. I believe it's the drive belt but thought I would post here for insight first . Join Date: Jun 2007. Damaged Rings or Cylinder Liners. * Engine not properly warmed up -----definitely no. 02-14-2014, 11:25 AM #4. This ethanol attracts moisture (water) and debris which reduces fuel quality and may cause the engine to run rough (or not at all). If the engine won't start or is not operating properly, start by checking the fuel system (tank, fuel lines and fuel filters). I have a non turbo V2203 IDI in my kubota u45. Any way you look at it, a diesel truck emitting black smoke is not going to be getting the optimal fuel mileage it should be getting. 25 hp Kohler on a 60" Gravely Zero turn.. low power under load with black smoke. When it is running right, it cuts and spits out the thick grass like it was nothing! Starved for fuel: This may be caused by a restricted or a wrong fuel filter, air being introduced into . * Engine not properly warmed up -----definitely no. 25 HP Kohler Command on a Bob Cat, Pops, back fires, and misses under a load. How do I fix my Bobcat engine that has a loss of power? Even when just motoring forward with an empty bucket or read more daves71 Service Manager High School or GED 668 satisfied customers Running fine..ive put new filters on,changed fuel supply hose..intake In "What's My Mower?? Thanks for the ideas, Earthwrks. 2009 Bobcat Toolcat 5600 D. I need help diagnosing a power issue on my 2009 Toolcat 5600D. The machine lost power and it was found that the actuator pump failed and blew out the filter. I have been running it every day and just the other day it ran for about 15 minutes then started to lose power until it would barely make. The exhaust smells like its running lean. Switched them. Faulty Injection Timing. Before the fix part, Taryl hosts a popul. * Spark plug gap incorrect -----don't think its this. I started my YM240 (24 hp diesel) this spring and it runs absolutely fine for about 1/2 hour - plenty of power under load, no smoke, no blowby, everything seems normal. Re: Power loss under load. It was manufactured in 1992. A catastrophic failure of a $20 screen due to read more. The offer starts 04/01/2022 and ends 06/30/2022. After the engine warms, the choke opens and a normal air-to-gasoline mixture moves through the carburetor. When you move the spool, fluid is supposed to go somewhere, either the spool is not moving, or the fluid is sent somewhere else. you may want to check your spindles as well and make sure they spin freely, and grease them if you can. Diesel fuel filters need to be changed on a regular basis, more often in dusty work environments. 15. Customer: Common Causes of White Smoke: Damaged Injectors. The unit would rev back up after relieving it of the load which in the main case was just moving . Save. My '96 legacy will run fine for a very long time, but on rare occasions (once every month or two), it will lose power going up a long steep hill. I have a 2004 cat skid steer 226b, sometimes when i turning or using the bucket the machine starts to lose power and - Answered by a verified Technician . Sign #4: Skid Steer Lacks Power. I got it. Previous repair: Replaced fuel shutoff solenoid (electrical problem) After previous repair the tractor was used and worked but began laboring to the point of shutdown when under load. I know my way around gas engines pretty darn well and I've owned 2 diesel engines but have only done basic maintenance on the diesels so I am literally a novice when it comes to diagnosing diesel engine issues. Due to the lack of enough air and reduced cooling capabilities, the engine will be overheating. There is no loss of engine power though. We did a compression check and were getting about 190 pounds on each cylinder. But when the load is applied to the engine, it is too rich and so it dies. How To Fix? This happens at all engine temps. Also one of the spindle bearings could be freezing up causing the blades to be difficult for the engine to turn. It almost seems like a bad valve. "Up High in the Rockies". Customer: It is blowing a lot of black smoke and has very little power. In the case of hydraulic systems, there are three easily detectable symptoms that give early warning of root cause conditions. 2,375 satisfied customers. My manual says idle speed no load is 2,200 rpm and 3,700 under power. Both are now black. Save. Replace the old fuel with new fuel by cleaning off the carburetor and changing gas. A possible answer could be as simple as changing or cleaning the air filter. I'm curious if you solved the problem? Dec 12, 2015 #3 reaperman Well-known member Joined Dec 18, 2011 Messages 524 The number 1 reason for power loss is the fuel filter. sharpen your blades, dull blades create a nasty load and can bog your mower down a bit. A JD 160 Excavator with less than 2800 hrs..lost power..actuator..blew. sharpen your blades, dull blades create a nasty load and can bog your mower down a bit. One was black. Fuel in the last couple of years now has up to 10% ethanol. Most common causes of black smoke are faulty injectors, a faulty injector pump, a bad air filter (causing not enough oxygen to be supplied), a bad EGR valve (causing the valves to clog) or even a bad turbocharger. Here is what has me confused. If bad gas/ water in gas is a possibility would some kind of fuel treatment be worth trying. Only show this user. I have all new air and fuel filters. It has been sitting down on my Dad's farm in south Texas covered with a tarp for at least the past ten years. Had to take the engine off the mounts to get it out! #7. cngizbleevng said: I have a Hustler Super Z zero turn mower with 60" deck and kawasaki engine. Damaged Crankshaft Keyway. May 22, 2006. 2) I was looking on Kohlers web site and found this under troubleshooting section: Runs Rough on Low & Will Not Accelerate. My lawn tractor is a 2013 Husqvarna YTH18K46. i have a 96 bobcat 873.motor has been completely remaned by a deutz dealer.problem is that after about 15 minutes of operating under full power the engine starts to lose power .example if i was loading my truck with sand from a pile the machine would seem to die down as if it was in a lower throttle position. It's not only backfiring, but when you engage the blades it bogs down terribly and then runs poorly the whole time the blades are on. A backfire is a loud boom or bang that occurs when the engine slows rapidly. It very clearly stumbles and begins running very rough, as if missing a cylinder. The rated operating capacity is 3350 lbs (1520 kg), and tipping load is 6700 lbs (3040 kg). Hello, I have a 1993 753 bobcat skidsteer that has been running great for years. It has an Onan 16 hp performer motor. Bobcat S175 fuel problem. Kubota BX or small diesel tractor running rough, stalling or losing power. Downhill mow speed is normal and flat terrain is slightly limited. Check a no-start. Turns out the fuel line had worked its way between the tank and the oil pan and got pinched closed. The proper method to check for spark is with a spark tester. Check your fuel cap, make sure the vent is open. You should run the throttle above idle for any turning. There are a few possible causes to missing power from an engine and here are a few things to ponder: Your engine may have old gas in the tank. These small machines will not hold a heavy load on the engine if its speed is too slow. If the choke sticks shut, the mower runs poorly, and it could stall or bog down as you . There is no blockage in the intake. Bobcat compact excavators deliver more hydraulic horsepower than other brands of the same size. Any advice would be appreciated. It runs just fine a works good. I checked for sparks and both cylinders/coils have spark. pipo5832. i stop moving for a second until the blades get back up to speed but im basically crawling doing half cuts. ?" Taryl shows you what to look for when your water cooled Kawasaki engine has a loss of power. Replace and go from there. Bobcat model number is 942233a with 1250 hrs. even if i was lowering the boom and The cylinder(s) may not move at all, or if they do they may move too slowly or may stall under light loads. It has a Kawasaki FR600V engine and K46 transmission. To check, be sure you've got enough slack in the deck belt, then try to turn the spindle pulleys and see if they all turn freely. #1. * Spark plug gap incorrect -----don't think its this. Clear all the dirt from the cooling fins. The hydraulic return filter is a simple solution that can be found under the floorboard. Low Cylinder Compression. If you have a loss of power when operating your Bobcat loader, it may be due to a clogged breather tube or a clogged hydraulic return filter. "Up High in the Rockies". The fuel system also gets clogged with excessive dirt. The reason is pretty simple. If the choke sticks shut, the mower runs poorly, and it could stall or bog down as you . A dirty air filter will allow the engine to run but too rich. #2. I have a non turbo V2203 IDI in my kubota u45. You should run the throttle above idle for any turning. Registered. It starts and runs fine but loses I have a 1996 Bobcat 753. Not the nicest way to test it (tastes like crap, but is quick and simple). Reply With Quote. Tractor. These small machines will not hold a heavy load on the engine if its speed is too slow. You should check the fuel system as well for excessive dirt and water as well. and oil, fuel, air filters have all been changed. Response from the Engine Man: There are a few possible causes for a lack of power at high rpm with a diesel engine, but I like to first go to the most common causes. A backfire can be caused by events such as shutting down the engine . Jan 26, 2014 #3 wdchyd As with a drive refusing to turn, a skid steer that doesn't have much power can have problems that don't directly involve the hydraulic motor. It's an easy fix if you have the right tools. My compression cold test is 380psi in 3 cyl and one cyl is 340. 3) Took injection pump off, with all injectors, had them rebuilt. Also check that excess fuel from injectors is returning to tank and that tank is venting. Check to see that the deck belt is not binding somewhere. Maybe it won't start or won't stay running. Proactive maintenance emphasizes the routine detection and correction of root cause conditions that would otherwise lead to equipment failure. Of course, any major component pump, relief valve, cylinder, 4-way valve, filter, etc., could be at fault. Save big on a new small articulated loader. I pulled both spark plugs. 2009 Bobcat Toolcat 5600 D. I need help diagnosing a power issue on my 2009 Toolcat 5600D. If bad gas/ water in gas is a possibility would some kind of fuel treatment be worth trying. It sounds like you have a loss of power when you put the extra load on the engine. Outdoor Gasoline and Electric Powered Equipment and Small Engines - 25 hp Kohler on a 60" Gravely Zero turn.. low power under load with black smoke - Hello all I am a newbie here and was wondering if someone might be able to help me out. Only show this user. 25 HP Kohler Command on a Bob Cat, Pops, back fires, and misses under a load. At lower rpm, or when operated without load, all is fine, and the engine runs quite well. I have a 2004 cat skid steer 226b, sometimes when i turning or using the bucket the machine starts to lose power and - Answered by a verified Technician . Location. Help, please. So it's no wonder the mower will bog down under load. If your tractor has black smoke and lo. The skid steer loader has a boom lifting force of 5490 lbs (2490 kg) and bucket breakout force of 5035 lbs (2285 kg). I have all new air and fuel filters. This happens at all engine temps. The head is new and valves adjusted properly. It just started losing power uphill without any warning. Many Bobcat machines, and most likely include the 853, used a strainer on the end of the pickup tube in the tank that has a ball check in the stainer, meaning, if you blow compressed air in the fuel supply line in an attempt to clear any blockage you'll blow the fuel pickup tube clean off inside the tank. It is a Miller Bobcat 225G with the Onan 16HP engine. It should hold slight pressure when blowing through from tank side but draw air easily when sucking on the threaded end and you should hear the vent open and close when sucking or blowing. Then, after about 1/2 hour it starts losing power and in a period of about 3-4 minutes it loses so much power that it can't climb a small grade unless I drop it into 1st gear. The clogged filter acts like another choke. I believe this is possibly why. i have a kawasaki FR600V-AS05 engine on a exmark lazer z turn zero, it starts and runs (in idle high and low) fine but when i start to move it bogs down. A mower bogs down in thick grass when there is a power loss. It is blowing a lot of black smoke and has very little power. The motor only has 1080hrs on it. Power-Trac 1445, KUBOTA B-9200HST Put a hyd gage in the lift circuit and see what the pressure is. Of the last 6 or so times it has done this, it had me pulling off the road as it sputtere. you may want to check your spindles as well and make sure they spin freely, and grease them if you can. My compression cold test is 380psi in 3 cyl and one cyl is 340. Also if your traveling up hill, fully loaded, with both sticks forward you may have to just hold back a bit and let the engine catch up. The shaft nut holding the piston on in the cyl could have come off, and the fluid is recirculating. Starts fine and runs fine with no miss when there is no load on it. I keep giving it gas and it keeps slowing down. It almost seems like a bad valve. It has had regular maint. Damaged Timing Gear. So, any load on the engine throws it off. 2) I was looking on Kohlers web site and found this under troubleshooting section: Runs Rough on Low & Will Not Accelerate. Apr 7, 2010 Messages 8 Hello, I have a Bobcat 843 Isuzu and it has just started losing power when I have it under a load, like climbing a hill with a loaded bucket. Jul 8, 2015. The head is new and valves adjusted properly. 2008-05-26 153964. New air filter, new fuel filters, new injector nozzles, and stanadyne performance treatment. Check for good fuel flow from tank to inj pump. The machine will lose power under load and blow black smoke as it bogs down. Blue Smoke Signals. 0% Financing or Cash Rebates on Small Articulated Loaders. It resembles a spark plug but has a sunken center electrode that simulates a load on the coil. Thanks OhSarg Sep 14, 2010 #3 M mrfixitpaul Well-known member Joined Mar 28, 2009 Messages 365 We did a compression check and were getting about 190 pounds on each cylinder. It will also run bad with the blades off at a high speed. I pulled the spark plug wire on the left side (by fuel pump )and mower runs just fine, put . My brother has a JD 160 Excavator with less than 2800 hrs. These symptoms are abnormal noise, high fluid temperature and slow operation. The use of glow plugs during cold starts and/or the use of a flushing solvent to remove engine sludge is recommended. Lately, the mower loses power when under any load (accelerating or going uphill), and when cutting grass. kleinchris. Bobcat CT120, 255 hrs, Kioti 3 cyl diesel, front loader. Receive 0% financing for up to 24 months*, or, in lieu of financing, choose select-model cash rebates of up to $1,000 USD*/$1,300 CAD*. The spark is arcing in atmospheric pressure. Make sure the fuel flows freely from the tank to the fuel injectors. It runs fine on flat ground. hoho223. Tractor. There is no blockage in the intake. Only show this user. I have a one year old 2501, 90 hours on the clock. Local dealer inspected and can not find an issue. I've had multiple occasions where it begins to stumble, miss, smoke slightly, and lose power while under load. Jul 1, 2011. Excessive dirt and grass can clog the air filter system or the cooling fins, which will lead to power loss and hence bogging down of the mower under load. Posts: 269 Westminster, Texas. It has no smoke. I brought it back up to Dallas, and after putting a battery in it and rebuilding the carb, and beating on the starter a little with a hammer, it fired . By lacking power, we mean that perhaps your skid steer just can't make it up that hill or it can't seem to carry that load it had no problem with a few days ago.