Porsche 996 C4 coolant leak after a speed bump
After a speed-bump impact, the owner of a 2002 manual C4 first asked about a drip near the oil filter. His closer inspection found a bent hard pipe and split rubber hose; replacement was proposed, with no confirmed repair outcome.
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A drip after a speed bump
Kahdmus reported a small drip after crossing a speed bump too quickly. Looking underneath with a flashlight, he saw it around a black pipe running horizontally in front of the oil filter. He later identified the car as a 2002 C4 with a manual transmission. His photograph documents the underside area; it does not, by itself, establish the leak source.
The initial pipe and clamp suggestions
Doug996InKC identified a coolant pipe and hose in the photograph and suggested checking for a punctured hard pipe or a missing hose clamp. logray described the line as part of the heater-core loop. These were replies to the initial report, before the owner described what he found during a closer inspection.
The owner found a bent pipe and split hose
After lifting the car and looking underneath, Kahdmus reported that the hard pipe was bent and the rubber hose connected at its front was split. He expected replacement of the pipe, hose and clamps, followed by a coolant refill, to resolve it. This later observation changes the earlier clamp-only possibility: the owner reported damaged components. It remains a proposed repair, not a report that the parts were replaced or the leak stopped.
Coolant-level and refill questions remained
Earlier, the owner said the reservoir remained between minimum and maximum and the gauge stayed near its 180 mark during roughly forty minutes of driving. He later said he kept topping up with distilled water and asked about refill methods and the changing mixture. Those observations and questions do not document a completed repair or confirm that continued driving was safe.


A commenter suggested checking above the area
logray also suggested inspecting above the photographed area and cleaning it to see where fluid reappeared. That remained diagnostic advice from a commenter; the account does not establish an oil-cooler failure or a verified source beyond the owner’s reported pipe and hose damage.
Source reply ↗ · logray