The wagon is sitting. Has been for a while. And before anyone asks: yes, I know. I know.
Here's the honest update: we did a compression test a few months back and cylinder #1 came in at 61 PSI. The other three were around 140 PSI. I'm not a mechanic. Even I knew that wasn't good.
So I did what any reasonable person does. I consulted someone smarter than me, did a lot of reading, and stared at the car for a while. We have a theory. It is not a fun theory.
What the Car Is Doing
The wagon has been sending some pretty unsubtle messages:
- White smoke on startup. Clears up once it warms, but it shows up every single time like it's punching in for a shift.
- Losing coolant. Not finding it on the ground either, which is apparently the worse version of that problem.
- The oil doesn't look right.
- Rough idle. It's not happy, and it wants me to know.
Individually, maybe you explain one of those away. All four of them, on the same cylinder that just tested at 61 PSI? The car is not being subtle.
What We Think Is Happening
The leading theory is a head gasket failure, or something going wrong with the cylinder head itself. I had to look up what that meant, so if you're in the same boat: the head gasket seals everything between the engine block and the cylinder head. Combustion pressure, coolant, oil. It all needs to stay separated. When that seal goes, things start going where they shouldn't.
White smoke on startup is probably coolant burning in the combustion chamber. The missing coolant is going somewhere. The oil situation tracks with that too. And the low compression is pressure escaping instead of doing actual work.
That's our best guess. An educated one, but still a guess until we actually open it up. I've been researching. I've been asking questions. I've been mildly stressed about it.
What Happens Next
The head has to come off. That's the next step and there's no way around it.
If it's just a head gasket, that's apparently a very doable repair. If the head itself is cracked or warped, that's a different conversation entirely. We won't know which one until we look.
When that teardown happens, it'll be here. All of it. The good, the bad, and whatever fresh surprises cylinder #1 has in store.