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Discussion Starter · #1 ·
So I was driving one day and saw smoke coming from under my hood. Opened the hood and smelt burnt coolant. At the time I didn’t have time to do a full diagnose myself, but I rented a radiator cap test kit. I saw coolant coming out of where the turbo and cylinder head met.

I took it to the HONDA dealership to get it fully diagnosed. Told them what I saw. Paid $350 to have them tell me my turbo was cracked (smh) and to replace it was $1700 for part and around $900 for labor. Having this information from the dealership, I declined the service and choose to do the repair myself.

Im currently in the middle of my repair. Im doing a MHI2 upgrade, PRL DP & FP, also intercooler. With only the new turbo and coolant lines connected, I re-did the coolant compression test and STILL saw/heard the coolant leakage coming from the same area (cylinder head and turbo). I decompressed the radiator and unbolted the turbo to get a better view. Re-pumped up the compression to 15-16 PSIs and found the leak.

The leak was actually coming from the cylinder head. Looking at the motor, there was a small horizontal crack on the cylinder head right above where it meets the turbo. Maybe I’ll add pictures later, I just wanted to put this out there for the club.
 

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Hello (OP) GSXRXACCORD
I just found out I have the same issue on my 18’ accord 2.0. After clearing up the antifreeze on the head the fluid returns (fills) up the nose area between the turbo and cylinder head when warming the car up.
I havent taken anything apart just yet. But I would like to know what you ended up doing for the repair?
Thanks in advance!
 

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Discussion Starter · #4 ·
Hello (OP) GSXRXACCORD
I just found out I have the same issue on my 18’ accord 2.0. After clearing up the antifreeze on the head the fluid returns (fills) up the nose area between the turbo and cylinder head when warming the car up.
I havent taken anything apart just yet. But I would like to know what you ended up doing for the repair?
Thanks in advance!
so far i jb wielded it. i’ll end up replacing the head later in the future if it doesn’t fix the issue.
 

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Hello all, I have a 2019 Accord 2.0T that developed the same "hairline" fracture as in the posted pictures. This happened last year when the car had just over 50k miles on it! I've taken most of the turbo intake plenum off (x2) to find it and then "tried" to seal it w/ K&W Fiberlock Head Gasket & Block Repair and then a JB Weld Hi-Temp Metal Repair (neither worked!). From the sounds of it... it's a manufacturing defect and Honda should step up & cover it! Though, we all know Honda is not willing to lose thousands of dollars w/o contesting it. As it stands... I have to put approx. 6 - 8oz. of Coolant in the Overflow tank every week. At least, until I can find a cylinder head to replace it.
 

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Started smelling coolant while i was driving looked down at my gauges and noticed my temperature was way above normal parked it and noticed a small pool of coolant in the exact same liitle pool as yours was collecting in. took the intake off and pressure tested it and heard a small air leak and found a hairline crack in the same area as yours. 2020 Accord 2.0T with 92,000 miles.
 
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