I would only recommend such products for old american cars pre-efi era.
Blue Devil Head Gasket Sealer
Hi All,
2012 CT200H with around 128K miles. Purchased used a little while back, and I now believe I have bought one with the HG issue. Coolant loss, shuddering upon starting, and taking off from stops. Check engine light just came on yesterday (code not read yet, but I suspect cylinder misfire). Plugs have been replaced, and also replaced EGR valve.
Has anyone had luck with a product like blue devil to seal a leaking HG? Wondering if it worth a shot or if i'll wind up doing a bunch more damage. I've read some posts that suggest an engine replacement makes more sense than HG replacement, so perhaps we try the hail mary/blue devil patch and see if we can get a year or 2 out of it? If it doesn't work, then I would imagine that i'm back in the same place?
Obviously I will confirm the HG failure with a proper test prior to taking action, but I am 80% sure just based on hours of reading though this incredible forum. Love this car and I am inclined to invest money into it as needed to ultimately get this sorted.
Any and all input and advice would be most welcome.
2012 CT200H with around 128K miles. Purchased used a little while back, and I now believe I have bought one with the HG issue. Coolant loss, shuddering upon starting, and taking off from stops. Check engine light just came on yesterday (code not read yet, but I suspect cylinder misfire). Plugs have been replaced, and also replaced EGR valve.
Has anyone had luck with a product like blue devil to seal a leaking HG? Wondering if it worth a shot or if i'll wind up doing a bunch more damage. I've read some posts that suggest an engine replacement makes more sense than HG replacement, so perhaps we try the hail mary/blue devil patch and see if we can get a year or 2 out of it? If it doesn't work, then I would imagine that i'm back in the same place?
Obviously I will confirm the HG failure with a proper test prior to taking action, but I am 80% sure just based on hours of reading though this incredible forum. Love this car and I am inclined to invest money into it as needed to ultimately get this sorted.
Any and all input and advice would be most welcome.
1 - 11 of 11 Posts
The issue with using chemical head gasket repairs on the CT is its water pump is very fragile, and any chunks or fragments from the curing process will break off the blades of the impeller causing the water pump to fail. Ultimately the best fix is to bite the bullet, and have some one replace the head gasket.
Good feedback folks. It's been very difficult to locate a shop that will take this project on, but I believe I have a good lead now. I did purchase a bottle of blue devil, but I'm going to return it and will invest the time, energy/money to hopefully get this thing squared away the right way.
Good idea. With all the cases of this issue across Toyota and Lexus platforms, I've never heard of anyone have a success story with "snake oil" like this.
Update - found a good (I hope) lexus/toyota specialist and have had the car officially diagnosed. Confirmed check engine light was a cylinder misfire, and it appears that the HG was/is leaking coolant into 2 different cylinders. Quote if for 2578 to replace the gasket, so i'm rolling with it. Car was purchased for 7,000, so I was expecting to invest a little bit of money. I was already about 700 (new key, egr valve, cosmetic stuff) into it before this, so i'm not thrilled with this development. However, with "only" 127K, i'm hoping that the car will last for many years after these engine repairs. Love everything about the CT200H. Very unique car, destined to be a classic
Just had mine done at 117k. Ask your mechanic if he’s going to use an oem gasket and bolts. My local mechanic specializes in Prius engine rebuilds and advised me that he only uses aftermarket parts. He told me the brand of parts, but I don’t remember the name. He said he’s never had a return customer for the same gasket issue. I would pick your mechanics brain a bit and ask him if he’s using Toyota head bolts and gasket or aftermarket. Toyota came out with a fix for the bolts, but my mechanic won’t chance it with oem, so he chose aftermarket and has never had a problem.
Sorry for the bad news, but is it possible that coolant was replaced by plain water or by other liquid? Or never replaced?Update - found a good (I hope) lexus/toyota specialist and have had the car officially diagnosed. Confirmed check engine light was a cylinder misfire, and it appears that the HG was/is leaking coolant into 2 different cylinders. Quote if for 2578 to replace the gasket, so i'm rolling with it. Car was purchased for 7,000, so I was expecting to invest a little bit of money. I was already about 700 (new key, egr valve, cosmetic stuff) into it before this, so i'm not thrilled with this development. However, with "only" 127K, i'm hoping that the car will last for many years after these engine repairs. Love everything about the CT200H. Very unique car, destined to be a classic
Used BD in my 2012 F-sport without luck. Changing HG with buddy next weekend. Many videos online to change + one great video on this forum - just don't know where it is right this sec.
I will say, 2 bottles of BD, @ $39 a pop, worked on my 2006 Ford F150 4x4 V8!
Good luck and Cheers!!🍻
I will say, 2 bottles of BD, @ $39 a pop, worked on my 2006 Ford F150 4x4 V8!
Good luck and Cheers!!🍻
Yeah, the HG work was outside my abilities for sure. It stung paying the 2600, but 1 week after replacement, the car is running great. Drove it to Boston and back (150 mile RT) yesterday and everything is smooth. I will say that gas mileage is lower on this 2012 then what I am getting in my 2016, but I suspect that has to do with the hybrid battery. 128,000 miles on my 2012 (now averaging averaging 40-43 MPG) while I am routinely getting 46-50 MPG in my 2016 with 40,000 miles. These are summer mileage numbers driving somewhat conservatively, but definitely not going crazy hypermilingUsed BD in my 2012 F-sport without luck. Changing HG with buddy next weekend. Many videos online to change + one great video on this forum - just don't know where it is right this sec.
I will say, 2 bottles of BD, @ $39 a pop, worked on my 2006 Ford F150 4x4 V8!
Good luck and Cheers!!🍻
Not sure since the car is somewhat new to me. It had newish looking pink coolant when I got it, but the ownership history in unknown. Definitely a bit beat up around the exterior, so it is conceivable that maintenance was not kept up to date, which may have lead to the issues. Including repairs and clean-up stuff I am still below 11K into this car, which is acceptable for a 2012 with 128K. The 7K price-tag that I paid for the car was definitely a lottery ticket which was too good to be trueSorry for the bad news, but is it possible that coolant was replaced by plain water or by other liquid? Or never replaced?
Usually it's,Hi All,
2012 CT200H with around 128K miles. Purchased used a little while back, and I now believe I have bought one with the HG issue. Coolant loss, shuddering upon starting, and taking off from stops. Check engine light just came on yesterday (code not read yet, but I suspect cylinder misfire). Plugs have been replaced, and also replaced EGR valve.
Has anyone had luck with a product like blue devil to seal a leaking HG? Wondering if it worth a shot or if i'll wind up doing a bunch more damage. I've read some posts that suggest an engine replacement makes more sense than HG replacement, so perhaps we try the hail mary/blue devil patch and see if we can get a year or 2 out of it? If it doesn't work, then I would imagine that i'm back in the same place?
Obviously I will confirm the HG failure with a proper test prior to taking action, but I am 80% sure just based on hours of reading though this incredible forum. Love this car and I am inclined to invest money into it as needed to ultimately get this sorted.
Any and all input and advice would be most welcome.
clogged inlet manifold and pcv valve.
1 - 11 of 11 Posts
- This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Lexus CT200h Forums
A forum community dedicated to Lexus CT200h owners and enthusiasts. Come join the discussion about performance, modifications, troubleshooting, hybrid and electric vehicle maintenance, and more!
Full Forum Listing
Top Contributors this Month
View All
GreenQueenSD
43 Replies
MonkeyWrench
19 Replies
NewShockerGuy
16 Replies
Recommended Communities
