To determine if a motorcycle's rear shock is leaking oil from the bottom, you can follow these steps:
Visual inspection: Start by parking your motorcycle on a level surface and examining the rear shock absorber. Look for any signs of oil residue or wetness around the lower portion of the shock body, particularly near the seal and the bottom mounting area.
Check for oil stains: If there is a leak, you might notice oil stains or drips on the ground beneath the motorcycle after it has been parked for a while. These stains can indicate oil leakage from the shock absorber.
Inspect the shock body: Carefully inspect the shock body itself. Look for any visible cracks or damage that may be causing the oil leak. If you see any signs of damage, it's essential to have a professional mechanic inspect and repair the shock absorber.
Bounce test: To further assess the condition of the shock absorber, you can perform a bounce test. Gently push down on the rear of the motorcycle and observe how the shock responds. If there is excessive bouncing, uneven compression, or a lack of resistance, it could indicate a problem with the shock, which may include an oil leak.
Professional inspection: If you suspect an oil leak or notice any abnormalities during the inspection, it is recommended to have a qualified motorcycle mechanic or technician inspect the shock absorber. They can provide a more accurate diagnosis and advise you on the necessary repairs or maintenance.
Remember, a leaking shock absorber can compromise the motorcycle's handling, stability, and overall safety. Therefore, it's crucial to address any suspected leaks promptly and have the necessary repairs or replacements done by a professional.