Post by buggs on Feb 4, 2023 18:10:39 GMT
Hey all, me again.
So the cars been running well, honestly I've not taken it out much due to the dodgy weather, but I've been keeping it running every few days to make sure it's still turning over. Since I've replaced the radiator and filled it back up with coolant, I seem to be loosing some with no sign of leakage 🤔 one of the days when I opened the expansion tank there was a lot of bubbles coming back in. This wasn't happening before, just since finishing the build. After speaking to a few people turns out it could be a sign of head gasket failure!
I can't have a head gasket failure after doing all this work, I'll be gutted.
However, when I ran the car yesterday for 20 odd minutes, there was no bubbles. Although on the drive home from work yesterday I still lost a small amount of coolant somewhere.
Anyway, I knew the radiator cap that was on was a bit pants. So first of all I've replaced that with a brand new one. I'm hoping that maybe the leak was coming from there and was evaporating on the hot radiator, hence why there's no sign of a leak.
I was also recommended to check the compression of the cylinders. So I bought a compression tester and that's what I was up to today.
I removed the HT leads and all 4 spark plugs, threaded in the tester and turned the car over a few times.
I'd been told that if there was a huge difference between the cylinders then that could indicate an issue with the gasket and that there could be a leak between the cylinders.
So cylinder 1 came out at 170 psi, and then 2, 3 and 4 all came out at 150 psi. Now I'm not exactly knowledgeable in the correct pressure for the cylinders, but the fact there's not a massive difference between them gives me hope that all is good.
Next job tomorrow will be making sure the jubilee clips on the coolant hoses are 100% tight, which I'm confident they already are.
If anyone has any knowledge on the compression rate of the engine, please let me know if you think those numbers are OK.
So the cars been running well, honestly I've not taken it out much due to the dodgy weather, but I've been keeping it running every few days to make sure it's still turning over. Since I've replaced the radiator and filled it back up with coolant, I seem to be loosing some with no sign of leakage 🤔 one of the days when I opened the expansion tank there was a lot of bubbles coming back in. This wasn't happening before, just since finishing the build. After speaking to a few people turns out it could be a sign of head gasket failure!
I can't have a head gasket failure after doing all this work, I'll be gutted.
However, when I ran the car yesterday for 20 odd minutes, there was no bubbles. Although on the drive home from work yesterday I still lost a small amount of coolant somewhere.
Anyway, I knew the radiator cap that was on was a bit pants. So first of all I've replaced that with a brand new one. I'm hoping that maybe the leak was coming from there and was evaporating on the hot radiator, hence why there's no sign of a leak.
I was also recommended to check the compression of the cylinders. So I bought a compression tester and that's what I was up to today.
I removed the HT leads and all 4 spark plugs, threaded in the tester and turned the car over a few times.
I'd been told that if there was a huge difference between the cylinders then that could indicate an issue with the gasket and that there could be a leak between the cylinders.
So cylinder 1 came out at 170 psi, and then 2, 3 and 4 all came out at 150 psi. Now I'm not exactly knowledgeable in the correct pressure for the cylinders, but the fact there's not a massive difference between them gives me hope that all is good.
Next job tomorrow will be making sure the jubilee clips on the coolant hoses are 100% tight, which I'm confident they already are.
If anyone has any knowledge on the compression rate of the engine, please let me know if you think those numbers are OK.
