P38 losing coolant
- Thread starter feyniriel
- Start date
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Datatek
Well-Known Member
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- 45,846
- Location
- Near Poitiers SW France
Look under the carpet in the right hand footwell for signs of coolant.
Feels dry under the carpet.
Datatek
Well-Known Member
- Posts
- 45,846
- Location
- Near Poitiers SW France
OK so it's not the heater matrix O rings which are a common failure point. Splits in the header tank are not unknown and a defective pressure cap will cause loss of water. Otherwise it's down to observation, check the pump is not leaking.
Grrrrrr
Technician, Bodgit & Scarper Ltd
- Posts
- 19,824
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- Buckinghamshire, UK. ('95 DT)
You can get UV dye to go in the coolant and then use a UV torch to see where it is leaking.
As Data says, heater matrix, o-rings for said matrix, coolant hoses (check the one behind the engine by the bulkhead with a mirror), expansion cap and possibly the radiator itself.
Worth pressuring each cylinder via glow-plug hole and with valves shut and see if any coolant comes out the expansion tank. If it does then head-gasket or more likely a cracked head.
As Data says, heater matrix, o-rings for said matrix, coolant hoses (check the one behind the engine by the bulkhead with a mirror), expansion cap and possibly the radiator itself.
Worth pressuring each cylinder via glow-plug hole and with valves shut and see if any coolant comes out the expansion tank. If it does then head-gasket or more likely a cracked head.
