05 Accord 4 Cyl - Rough Startup & Cylinder 1 Misfire
#13
Even with a small crack near a water port, I'd think the OP would have noticed the cooling loss. Even if he topped the jug off say once a month, you'd notice it. Seems odd that only #1 cylinder is getting coolant into it (according to the mechanic), if the OP isn't topping up the system. Maybe I'm wrong, but if you have a crack in the cylinder head, it's either usually near a water port, or between 2 exhaust ports. And I don't think Honda designed the head to put 2 exhaust ports near each other.
#14
I'd have it magnafluxed to look for small cracks that you can't see. A good machine shop should be able to do that for a small extra cost.
#15
Update! I've managed to get the cylinder head off. It was definitely an adventure, removing the crankshaft pulley bolt was a pain in the ***. I could definitely see some coolant in cylinder 1, but I did not notice any glaring failures in the head gasket nor cylinder head cracks. I'll be taking the cylinder head to a machine shop tomorrow to get examined and resurfaced.
As for the discussion regarding the cause of failure, the car was not exhibiting any overheating. I was not having to regularly replace coolant. The misfires were only happening for about a week before I dismantled it. Misfires only occurred on cold startup, they never happened while the car was running or if I turned the car off and then immediately started it again. The current game plan is to replace the gaskets and o-rings, put it all back together, and test it. If the misfire problem is resolved I'll take it to my local mechanic to have him examine the cooling system.
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Trystan Thomas
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08-22-2019 08:19 PM