Kawasaki Zx600j7f: problems, complaints, bulletins

Summary for the Kawasaki Zx600j7f across 1 model years: 12 owner complaints and 0 NHTSA service bulletins, plus repair videos. Pick a year for details.

Model years

Year	Owner complaints	involving a crash	Technical service bulletins (TSB)	YouTube repair videos
2007	12	0	0	0

What fails most often

1 Engine and cooling 92% of all complaints
2 Powertrain 8% of all complaints

Circle size and colour show each component’s share of NHTSA complaints. Schematic only, not a drawing of the exact model.

Engine and cooling: 11 complaints (92% of all).
Powertrain: 1 complaints (8% of all).

Symptoms owners describe

How many of the 12 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).

oil leak or consumption4 · 33%
knocking, grinding or other noise4 · 33%
engine failure or replacement2 · 17%

Components owners complain about

Component	Owner complaints	involving a crash	Technical service bulletins (TSB)
Engine and cooling	11	0	0
Powertrain	1	0	0

What owners report

Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.

Also a 'ticking' from the engine that has to do with timing chain. The oil leak is a danger being that it's on a motorcycle. The 'ticking' is just a little annoying until it causes engine failure.
Engine and cooling · 2007 · 2008-09-04 · NHTSA complaint #10240857
From day one it has had an incredibly audible valve ticking noise. The noise is so bad that even at 6000 rpm with a helmet on the ticking can be heard. I have taken the bike to authorized kawasaki repair shops 3 times and they have replaced the camshaft chain tensioner but have not fixed the problem of the ticking.
Engine and cooling · 2007 · 2008-09-04 · NHTSA complaint #10240988
2007 kawasaki ninja zx-6r, owned for less than one year, experienced a catastrophic engine failure and the bending of two valves while riding. Could have caused a serious accident, damage was due to a manufacturer defect which a local dealership is now repairing.
Engine and cooling · 2007 · 2008-08-29 · NHTSA complaint #10240180
Bought a 07 zx6r after 218 miles the cams and tappets went bad, kawasaki replace both cams and tappets, now it has happened a second time at 12,500 miles not even a year later. Have heard of many others with the same problem.
Powertrain · 2007 · 2008-08-26 · NHTSA complaint #10239807

What to check before buying

Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.

Other models of this make

Read also

Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-06.