This is worrisome as my 2021 HE is coming up on five years this May. It now has 77,000 miles on it. Please keep us updated. I am so sorry to hear this. Hope Toyota will treat you right.
Misfires on 3 cylinders—likely evap issues, flooded charcoal canister led to misfires (2021, 75K miles)
- Thread starter HSTexan
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Wow, I’m sorry to hear this. Is this the first heritage edition 200 to be subject to this?
Oil changes are not really the issue, but rather the coolant, and they do recommend 10 year/100k in the service intervals for the first set of coolant (every 50k after that) so I don’t see the maintenance history being an issue. Especially since you had it changed at 60k.
The head gasket coating was probably defective (maybe Covid QC issues?), flaked apart after so many heat cycles, let coolant into the cylinder, and washed off the cylinder walls causing the scoring.
Do you know the build date of your cruiser?
Oil changes are not really the issue, but rather the coolant, and they do recommend 10 year/100k in the service intervals for the first set of coolant (every 50k after that) so I don’t see the maintenance history being an issue. Especially since you had it changed at 60k.
The head gasket coating was probably defective (maybe Covid QC issues?), flaked apart after so many heat cycles, let coolant into the cylinder, and washed off the cylinder walls causing the scoring.
Do you know the build date of your cruiser?
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- #23
I know I've looked at it before and I want to say it was 11/20 or 12/20.
What’s up with the cylinder wall scoring? That seems more typical of a mechanical failure and not a head gasket. And misfires on 2,6, and 8 but not 4? Did the HG let go in multiple locations? I wonder what’s going on with that head? Maybe more than the HG?
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- #25
Not sure yet--it didn't make it into the shop until around noon so they didn't have a ton of time to dive into it. They told me I'd get a more detailed update on Monday with their findings. As far as I know they hadn't even scoped beyond cylinders 8 and 6 at this point and called me as soon as they found a bad cylinder.
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- #27
From some basic research and if I still go through Toyota even if corporate decides not to cover any part of it it can range wildly based on what kind of engine you replace it with. But the general sense I was picking up was $15K on the low end up to $30K using new parts
Fingers crossed that they can save the current engine with some machine work and so on.
Ls swap it
For the love of God and everything holy, don’t do this with GM’s newest generation of $h*t that’s their version of the 3.4 v35a.
That said, there’s something to be a trend setter!
Not really - 2021 during covid, parts supply issues, and manufacturing issues. Oh, and things happen. Find me 250 2021s with a bad head gasket and then maybe we have something to discuss.
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- #32
Well I just received an interesting update call from the dealership. They wanted to do a leakdown on it over the weekend so they hooked it up and pressurized it over the weekend and came in this morning to find that it was exactly where they left it 36 hours ago. So apparently the scoring on the walls is not as bad as they thought--not exactly sure, he said they didn't have pictures since it was just through the borescope, but I asked if he'd be able to try to get some for me. Either way, if it's not losing pressure the rings are holding and so is the headgasket. They also said the cylinders were bone dry, so maybe they assumed coolant, but was actually some fuel? I'm not sure how a tech mistakes the two. They did say the plug for the bad "scored" cylinder was very orange, so I'm not sure exactly what is going on.
It sounds like whoever looked at it Saturday was not the shop foreman, and this morning the shop foreman looked over the first tech's work and did not agree. They're doing new plugs all around and an EFI service and will see where it stands. At this point I'm extremely confused, slightly skeptical, and all around unsure of what to believe. I had him send me photos of the two bad plugs they pulled out. I just don't understand how you go from scoring and coolant in the cylinder to "it might only need plugs and an EFI service."
It sounds like whoever looked at it Saturday was not the shop foreman, and this morning the shop foreman looked over the first tech's work and did not agree. They're doing new plugs all around and an EFI service and will see where it stands. At this point I'm extremely confused, slightly skeptical, and all around unsure of what to believe. I had him send me photos of the two bad plugs they pulled out. I just don't understand how you go from scoring and coolant in the cylinder to "it might only need plugs and an EFI service."
At least that’s much better news than the first. Fingers crossed it’s the latter.
Were you using any fuel additives? Sometimes they can leave orange deposits on the plugs.
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- #34
I was not and haven't ever--the only thing I do is run 87 around town here in Texas and then switch to mid-grade or premium when I hit higher elevation to make sure it's always at least 87 or higher
Good help is hard to find man. Truer today than it's ever been.
I'm sure that the not-knowing and confusion is creating a ton of anxiety, but at least there is now a possibility of a non-catastrophic outcome. Happy that you got this positive update.
The whole Covid thing seems like a bit of a bogeyman tbh. Is it documented that late build 2020s and 2021s have more manufacturing issues because of the pandemic? I get that it makes some logical sense to assume that but this would be one of the first instances of a well-maintained 2021 having a major failure that I've heard about.
Things do happen but the HG issues with this engine have been well documented and so if that's what happened here it's hard to 100% rely on coincidence.
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Part of a plug analysis is looking at and comparing all plugs. I'd reserve judgment until that happens
Well don’t punch a gift horse in the mouth! Take it and run!
I'd honestly be surprised if plugs and EFI service fixed it but hope that works out as minimally invasive is always better. FWIW, our first 200 went over 240k on the OEM plugs and they looked WAY worse than that. They presented as a misfire on one cylinder that needed a coil. We made it home on a parts store coil, replaced all the plugs and the one coil with OEM, and it was good for another 50k before we sold it. All that to say, these trucks will run fine on WAY worse plugs.
The EFI service as I understand is basically just a fuel system additive kind of service so I don't expect any real changes unless you just got some awful fuel.
It's good news that the head gasket didn't seem to leak down, but something isn't adding up here so far IMO.
The EFI service as I understand is basically just a fuel system additive kind of service so I don't expect any real changes unless you just got some awful fuel.
It's good news that the head gasket didn't seem to leak down, but something isn't adding up here so far IMO.
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Well it was hopeful for a second—they called a few hours ago and said they did the plugs and EFI and drove it and it drove fine. Then let it cool completely and drove it again and everything was still fine. Said they checked the fuel trims too and everything seemed normal still.
Wife and I went over to pick it up hopeful, but still cautious. Made it about 2 miles down the road and the dash lit up like a Christmas tree again. Didn’t bother pulling the codes, just limped it back to the dealership again. It’s close to EOD so they said they’d start digging into it again tomorrow morning
Also attaching a photo of what the first tech considered serious scoring (bottom right)—sent it to a buddy who is actually a Toyota master tech up in Ohio and he was under the impression it looked fairly minimal.
Wife and I went over to pick it up hopeful, but still cautious. Made it about 2 miles down the road and the dash lit up like a Christmas tree again. Didn’t bother pulling the codes, just limped it back to the dealership again. It’s close to EOD so they said they’d start digging into it again tomorrow morning
Also attaching a photo of what the first tech considered serious scoring (bottom right)—sent it to a buddy who is actually a Toyota master tech up in Ohio and he was under the impression it looked fairly minimal.