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Engine & cooling

Harley-Davidson Flhtk Engine problems by year

30 complaints filed with NHTSA about the Harley-Davidson Flhtk's engine & cooling. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.

Engine complaints by model year

YearEngine complaintsCrashesInjuriesRecalls
20221000
20182000
20171000
20161000
20154000
201415100
20131010
20122010
20112000
20101000

Latest Flhtk engine complaints

2022 Harley-Davidson FlhtkEngine & cooling

The contact owns a 2022 Harley-Davidson FLHTK. The contact stated that while riding approximately 70 MPH, the motorcycle went into LIMP Mode and unexpectedly downshifted. The motorcycle was taken to the same local dealer on various occasions to be diagnosed; however, the failure could not be duplicated. The contact stated that the failure was associated with an automatic safety feature. The motorcycle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 3,800.

Filed Incident EngineNHTSA 11752988
2010 Harley-Davidson FlhtkElectrical systemEngine & coolingFuel system

I'm experiencing issues with my tbw. Check engine light came on for the first time in november at the end of a charity ride and I thought perhaps the pack ride caused it to overheat, after shutting the bike off it went away briefly. Did some troubleshooting online and discovered that the plugs on the ecm and tb were typically the issue so cleaned, added dielithium grease to the connectors and issues went away. Happened again, this time I pulled the cel codes to discover the tgs and etc codes were in...

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fault. After more research decided to eliminate the green quick connect plugs in the handlebars and fairing by sodering and heat shrinking connections as it was discussed that the connectors were a possible culprit for said cel codes. That resolved the issues temporarily like the previous attempts. Back to the seemingly common issue of the dreaded limp mode, to which I was almost rear ended on the interstate exit ramp after the bike went into limp mode. All the articles are hitting the same spot, 08-13yrs, 96, 103, 110ci engines effected by this same issues, how many of us have to go into limp mode or worse be struck and killed for a factory issue that should be addressed by the manufacture.

Filed Incident Electrical system · Engine · Fuel / propulsion systemNHTSA 11403192
2011 Harley-Davidson FlhtkTransmission & drivetrainElectrical systemEngine & cooling

I had just pulled out onto the highway in high traffic area and my motorcycle started producing a clanking noise from the primary case and after doing extensive research, come to the conclusion that the primary compensator was failing. At the time this happened, my cycle also dropped voltage from 14.8 Volts dc down to 8 or 9 volts dc and caused the cycle to bog, and lost mechanical power on a hill with high traffic from both directions on a heavily trafficked main u.S. Highway. Had it been daylight, the issue...

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could have costed my life had it not been from the glow of my emergency flashers glowing in the dark night, blinking. This was very dangerous because there was no where to pull off of the road due to an 11 foot drop off. This is and has been a commonly known issue for several year harley davidson models and are all still has not been issued for the compensator failing dangerously. At times, there have also been cases of them dismantling themselves and causing serious injury and death before now and almost caused death of my own due to when and where it happened.

Filed Incident Power train · Electrical system · EngineNHTSA 11316186
2016 Harley-Davidson FlhtkAcceleration & cruise controlEngine & cooling

Tl* the contact owns a 2016 harley-davidson flhtk limited. While driving with the cruise control activated, it disengaged automatically when going over bumps in the road. Also, the throttle would decrease and the vehicle lost power. On july 30, 2019, while pulling out of a parking lot, the throttle completely failed in traffic. The contact had to roll the vehicle to the side of the road. The vehicle was towed to la crosse area harley-davidson (1116 oak forest dr, onalaska, wi 54650, (608) 783-6112) where it was...

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diagnosed that the six terminal socket caused the throttle to malfunction. The dealer performed wiring repairs and replaced the terminal socket to the throttle. The dealer did not cover the repairs since the warranty had recently expired. The manufacturer was contacted and provided a case number. The failure mileage was 9,960.

Filed Incident Vehicle speed control · EngineNHTSA 11255545
2015 Harley-Davidson FlhtkElectrical systemEngine & coolingFuel system

After sitting in the sun approx. 8 Hours, while in motion, engine died approx. 2 Seconds when stopping, turning or accelerating. 1 Time engine sputtered when it died at a stop, the other times engine just stopped running. Started right back up. Ok if fuel tank and pcm (seat) are covered or bike in garage. Been to dealership twice, they were unable to verify. Died several times from 3/18/17.

Filed Incident Electrical system · Engine · Fuel / propulsion systemNHTSA 11143417
2015 Harley-Davidson FlhtkEngine & cooling

On interstate water pump failure at 9000 miles on the bike. Had the water pump replaced at denver harley cost $810.00

Filed Incident EngineNHTSA 11140807
2015 Harley-Davidson FlhtkEngine & cooling

2015 Harley davidson flhtk. Consumer writes in regards to disturbing engine implosion. *Ld the consumer stated while driving at high speeds the engine on the vehicle blew. *Js

Filed Incident EngineNHTSA 11111614
2018 Harley-Davidson FlhtkEngine & cooling

When slowing for a stop the engine will stall when the clutch lever is pulled in. The bike must be switched off then back on and restarted. This is an intermittent problem that the dealer could not reproduce. However, a little research on internet shows a lot of owners with the new milwaukee 8 engine are having this issue.

Filed Incident EngineNHTSA 11096827
2015 Harley-Davidson FlhtkElectrical systemEngine & cooling

Spark plug wire leading to front cylinder rubs against the fuel tank, leading to abrasion through the insulation of the spark plug wire. Replacement of park plug wire under warranty denied by fort bragg harley davidson. Abrasion through the insulation by contact of the fuel tank could lead to fire or explosion should the wire arc on the fuel tank or if fuel leaks.

Filed Incident Electrical system · EngineNHTSA 11072438
2014 Harley-Davidson FlhtkEngine & cooling

Traveling at highway speed the check engine light and overheat light came on. I immediately pulled over and shut off the engine. After consulting with local hd dealer by phone was advised to have the bike towed to the dealer for repair (per hd memo). Problem was determined to be a faulty water pump which caused the engine to overheat. Dealer stated, and confirmed at other hd dealers, that they have not been able to keep these water pumps in stock due to the high failure rate. Necessity to shut down the engine...

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due to overheating caused an unsafe condition due to remaining alongside the highway until a tow vehicle could move bike. This is a known failure on 2014 hd motorcycles with "twin cooling" according to several dealers. Once replaced, the new pump motors function properly.

Filed Incident EngineNHTSA 11030849
2018 Harley-Davidson FlhtkEngine & cooling

Head bolt broke on front cylinder of engine causing head gasket to fail, which led to oil leak from head gasket. This led to engine oil being leaked onto side of motorcycle as well as on passenger boots and onto rear tire. This occurred while vehicl was travelling on highway with engine at operating temperature .Wasinformed by harley master tech that they had seen this on numerous occasions

Filed Incident EngineNHTSA 11025236
2017 Harley-Davidson FlhtkTransmission & drivetrainEngine & cooling

It is transferring oil from the transmission to the primary while riding. This causes the primary to overfill which results in clutch issues and difficulty finding neutral. The transmission is going down which is probably decreasing its life and could cause it to lock up due to low oil level. This is potential safety issue that could lead to a catastrophic accident if this occurs at higher speeds. Bike has only 2500 miles on it and should not be doing this. No acknowledgement from the dealer.

Filed Incident Power train · EngineNHTSA 11012209
2014 Harley-Davidson FlhtkEngine & cooling

Approximately 10,000 miles engine and thermostat lights came on. The sensor was changed. This lasted for 600 miles. Different shop changed the sensor and water pump which lasted about 2000 miles. When returned to the shop, they retrieved the faulty code but could not get the engine to reproduce the error and would not look into issue. Problem returned less than 100 miles later/ at the present time, I ride the bike with the engine and temperature lights activated.

Filed Incident EngineNHTSA 10929777
2014 Harley-Davidson FlhtkEngine & cooling

2014 Harley davidson ultra limited. Consumer writes in regards to engine vibration, throttle issues, clutch compensator and possible eitms failure. *Smd the consumer stated he noticed a vibration from the engine which was more than he expected, and an intermittent knock from the engine. The hd personnel said it was normal. The consumer stated he liked the power and ride as speed. However, when the throttle was rolled off, the bike lugged and surged and at idle there was significant vibration. Also, at idle...

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there was a heavy. Loud intermittent clunking sound much like a pre-ignition knock. The consumer received different opinions of what the problem was. However, the consumer believed the twin overhead cam engine was an issue for the manufacturer. *Jb

Filed Incident Engine and engine coolingNHTSA 10888362

Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data

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