Coolant Pressure D13 volvo

bigbyrc · Sep 16, 2020

WitchingHour said: ↑

If you had the radiator recently changed, take a look at the pressure relief cap on the left side of the coolant reservoir. A lot of shops like to refill with a vacuum refiller, and they need to plug the relief cap when they do this. Typically, they'll either take an old relief cap which has failed in the past and plug it with silicone, or they'll plug the existing cap with a fastener of some sort and a clamp (Volvo typically attaches a runoff tube to their relief caps). If they forgot to do this, that could account for excess pressure. The coolant loss will be a matter of path of least resistance, and it may have punched through someplace where it was easier to do that since the relief cap was plugged. Just something worth checking out. Run into that problem a couple times with new trucks we'd received from the dealership, and the techs didn't undo whatever they did to plug the relief cap.
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THANK YOU AND TO ADD ON TO WHAT HE SAID, ALSO IF YOU HAVE A DRIVER WHO OVER FILLS WITH COOLANT, IT WILL EVENTUALLY BLOW A HEAD GASKET OR IN AND OUT HOZ OR BOTH!!! *(PRESSURE WILL TAKE The path of lease resistance!!)

Vladlyozya · Nov 24, 2021

Daniel aitonean said: ↑

My Mecanic is telling me that injector cups might me the problem and he wants me to go in and have that done, i haven't drained the tanks in a while, if theres coolant in the water what does that show?
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Hey so what was the solution to your problem I have a similar situation

The_lonetrucker · Apr 11, 2022

GeorgeStoenchev said: ↑

I went through very similar problem. Truck was loosing 1-2 gal of coolant per week but there was not pressure in the system. First suspected was engine head but the problem was not there. Problem was in liners they found two bad liners with very small whole on them. After full engine overhauled problem was solved.

Good luck i hope yours will be easy to fix
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The_lonetrucker · Apr 11, 2022

What liners were faulty? I have the same problem.

linares · Jan 26, 2023

i have 2012 volvo d13 replace head gasket some valves, air compressor, and egr cooler and still building pressure in the coolant system any help

Jayno7571 · Feb 28, 2024

Did you ever find problem

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