Skip to content
EnginePart report

2014 Harley-Davidson Flhtk Engine Problems

Complaints
12about this part
Share
32%of 37 total for the year
Median mileage
450miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 12 complaints about the engine of the 2014 Harley-Davidson Flhtk, 32% of the 37 complaints for this model year. Where a mileage was given, the median is 450 miles. 1 of these say a crash was involved, according to the filers.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“After delivery, I discovered while parked there was a cooling system leak near the front of the engine (~90 miles); if it were not addressed, such a leak has potential to deposit coolant on the rear tire and could contribute to a crash and ensuing injury. The dealer repaired the leak, it has subsequently returned and become more serious (discovered at 975 miles). The selling dealer advised me not to operate the motorcycle and retrieved it by trailer from my home. …”

NHTSA complaint #10548377, filed 2013-10, 90 miles

“The coolant system leaks when in motion which spills the coolant in front of the rear tire. It also leaks while sitting parked. It has also overflowed and spilled all of the coolant onto the ground immediately after shutting off the engine. The dealership has tried to correct the problem four previous times and has been unsuccessful. The bike is currently at a harley davidson dealership service center again. I have owned the motorcycle three months and I have been unable to ride it for approximately one month due to being in the repair shop because of the leaks.”

NHTSA complaint #10556997, filed 2013-12, 500 miles

“This is a brand new 2014 hd Flhtk limited. New with this model year, Harley-Davidson introduced their new twin-cooled technology. The motorcycle has a coolant system, whereby the exhaust ports inside each of the two engine cylinder heads are cool with antifreeze. After riding the motorcycle for the first time, I parked it in my garage and shut down the engine. Coolant liquid (antifreeze) began to pour out of the coolant reservoir bottle from the overflow tube and onto the garage floor. This was the first incident but it has since occurred three times for a total of four times. …”

NHTSA complaint #10546618, filed 2013-10, 120 miles

“Harley davidson model flthk motorcycle. Bought new motorcycle on 9-13-13 coolant leaking around the thermostat onto ground & on rear tire on 9-17-13 with 450 miles. Took to dealer they replaced thermostat housing & had motorcycle until 9-26-13. Rode motorcycle & coolant bottle overflowed in parking lot at lowe's on 9-27-13. We took it back to dealer on 9-29-13 for the coolant leak & coolant getting on rear tire. Dealer cleaned bike & they topped off coolant & gave me a water bottle full of coolant to add to the level if I have any more problems and said they would contact harley on the issue. …”

NHTSA complaint #10549425, filed 2013-10, 450 miles

“New engine overheating dumping coolant out of overflow tube underneath motorcycle and on to rear tire creating a safety risk. Four overheating incidents within the first 400 miles of engine life. Engine break in with malfunctioning cooling system creating excessive engine heat and risk of improper break in or engine damage.”

NHTSA complaint #10543071, filed 2013-09, 80 miles

Related service bulletins

Engine: other model years

YearComplaintsShare of year
2017113%
2016110%
2015440%
20141232%
201317%
2012211%
201115%
201013%

Other parts of the 2014 Harley-Davidson Flhtk

Brakes
8 complaints
Transmission and drivetrain
7 complaints
Electrical system
6 complaints
Vehicle speed control
4 complaints
Engine cooling
3 complaints
Equipment
2 complaints
Other or unknown
2 complaints
Steering
2 complaints
Exterior lighting
1 complaints
Fuel system
1 complaints
Body and structure
1 complaints
Wheels
1 complaints

← All problems reported for the 2014 Harley-Davidson Flhtk

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology