P38A Coolant Leak

V8vrrr · Feb 19, 2023

Hi all,
My P38 is leaking coolant, but I am not sure where from. Initially, I thought it was the Heater Matrix O Rings.
So, after dismantling half the front end, it turns out the O Rings were previously done. They weren't leaking at all so that's one less issue.

I did, however, use a UV dye to inspect any locations for leaks and these were my findings.

https://ibb.co/album/tqsPbQ

kermit_rr · Feb 20, 2023

The fan can vote coolant all over, an easier test would be a pressure tester. You can pressurise while the engine is off and cold

Grrrrrr · Feb 20, 2023

kermit_rr said:
The fan can vote coolant all over, an easier test would be a pressure tester. You can pressurise while the engine is off and cold

Certainly worth nipping the clips up. Wash it off and see if it reappears. Should be easy to see that dye in the carpet if it is leaking inside.

V8vrrr · Feb 20, 2023

kermit_rr said:
The fan can vote coolant all over, an easier test would be a pressure tester. You can pressurise while the engine is off and cold

Right, it might be worth buying the kit and investigating from there.

As for the video, what can explain that leak? What’s the name of the part that it’s leaking from?

V8vrrr · Feb 20, 2023

Grrrrrr said:
Certainly worth nipping the clips up. Wash it off and see if it reappears. Should be easy to see that dye in the carpet if it is leaking inside.

I investigated the inside - thankfully the O Rings aren’t an issue.

Grrrrrr · Feb 20, 2023

V8vrrr said:
I investigated the inside - thankfully the O Rings aren’t an issue.

Good news. It'll show up if the matrix itself is leaking too.

If you're unlucky it might be the rad itself leaking but I would nip up the hose clamps first.

kermit_rr · Feb 20, 2023

kermit_rr said:
The fan can vote coolant all over, an easier test would be a pressure tester. You can pressurise while the engine is off and cold

Vote.. i meant blow.. bloomin autocorrect

Rubberknees · Feb 20, 2023

kermit_rr said:
Vote.. i meant blow.. bloomin autocorrect

A blow job is better than a vote job any time

Dippypud · Feb 20, 2023

V8vrrr said:
Hi all,
My P38 is leaking coolant, but I am not sure where from. Initially, I thought it was the Heater Matrix O Rings.
So, after dismantling half the front end, it turns out the O Rings were previously done. They weren't leaking at all so that's one less issue.

I did, however, use a UV dye to inspect any locations for leaks and these were my findings.

https://ibb.co/album/tqsPbQ

Could be a pin hole that only opens under pressure?
Buy, borrow or hire a coolant pressure tester then do a number on the engine bay with talcum powder so you can follow the tracks back …

dubbleRR · Feb 20, 2023

Check along the top radiator for hairline cracks more so to the right side top from the front ,and the expansion bottle , Mine had very fine cracks n it sweated coolant ,,on yours,if its the v8 also the manifold coolant pipes , throttle body pipes

..

P38A Coolant Leak

V8vrrr

Member

kermit_rr

Very

Grrrrrr

Technician, Bodgit & Scarper Ltd

V8vrrr

Member

V8vrrr

Member

Grrrrrr

Technician, Bodgit & Scarper Ltd

kermit_rr

Very

Rubberknees

Well-Known Member

Dippypud

Never Knowingly Understood

dubbleRR

Well-Known Member

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