) to investigate, have a garage test the cooling system pressure. A coolant leak can indicate many failures, but if it’s coolant on the front of the engine, it’s often a water pump leak. To make certain this is the cause, before removing the cylinder head (See The coolant for the heater flows through that part around to the pulley and belt side of the engine just above the water pump. , the cylinder-head gasket may be leaking. With the engine running, smell the coolant itself - if there is a whiff of exhaust If you suspect an internal coolant leak, allow the radiator to cool, take off the cap, and look for signs of oil or frothy bubbles in the radiator or Watch the temperature gauge if it goes into the danger area, stop and allow the engine to cool. If the cooling system springs a small leak when you are on the road, you may be able to drive home slowly by releasing the radiator cap to its first catch, or by putting a match under the If a thorough search fails to locate the leak, suspect a damaged gasket between the cylinder head and the cylinder block, or a cracked head or block. Use a mirror and torch to find if there is one hidden behind the engine, made inaccessible by the bulkhead. They may be blown loose by pressure from the system, corroded, or even loosened by vibration. This will expose any weak area, possibly your water. Inspect hoses carefully at bends and joints, as well as where they clip on to stubs (SeeĬore plugs, which fill holes left in the cylinder block when it is being cast, are other likely sources of leaks. If your coolant is now reaching a higher temperature then it will also be at a higher pressure than before. Off an old hose can easily break off the stub. Some cars have plastic coolant tanks, and leaks in them are also beyond do-it-yourself repair.Īlways treat them gently - using a screwdriver to From the pictures I have seen, it looks like the inlet and outlet for the water pump go through this cover and into the engine, so it must be sealed with orings or sealant. But leakage from a radiator seam is best left to a garage. I have looked at pictures online and the coolant appears to be leaking from where the timing cover bolts to the block. Small leaks can sometimes be cured by sealing preparations available from shops and garages. it wasnt leaking from the rocker cover itself, it was leaking from the. around the surface next to the water pump where the rocker cover and the cylinder head join (between the metals where the gasket goo was supposed to be). Seams at the top and bottom of the radiator are also danger spots. I did that but once I ran the bike coolant dissolved the gasket goo and it started leaking out from the water pump. Coolant Leakage: A Red Flag One of the most common symptoms of a failing water pump is coolant leakage. Is flexed by engine movement over the end of the stub to which it is fitted, or where an overtightened clip has bitten into the rubber. Has built up - forcing out coolant at any weak spot. So are rust-coloured stains in theīut if you cannot actually see the leak, a systematic check is called for.
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