I created this thread to keep track of all V6 head gasket failure (and related) discussion threads on this forum (and others) to allow people to draw their own conclusions on the topic.
So here's what I've collected....
General 1GR-FE info
Head gasket failures are reported across multiple forums for the 1GR-FE V6 engine (4Runners, Tacomas and FJ Cruisers all use this engine)
This Forum (several DIY HG replacement threads toward the bottom which are great):
Head Gasket -Survey- Specifically V6
1GRE- FE head gasket was redesigned when?
2004 Limited Edition 4Runner 4X4 - Head Gasket
Preventing Blown Head Gaskets on v6?
New member - need help!!!! - p304 misfire
2004 Limited Edition 4Runner 4X4 - Head Gasket
Head gasket issue for 2004 4runner V6 (a thousand time)?
P0306 Misfire Rough Idle
T120:
Head Gasket Blown - 2004 V6 - Toyota 120 Platforms
Forum
TW:
1GR-FE Head Gasket Failing - Options - Tacoma World Forums
TN:
Head gasket question - Toyota Nation Forum : Toyota Car and Truck Forums
'05 4.0 Liter Head Gasket Issues - Toyota Nation Forum : Toyota Car and Truck Forums
Expedition Portal:
Repair advice? Blown head gasket on 4th Gen 4Runner? - Expedition Portal
Pirate 4x4:
Blew a head gasket on my 4.0 (long rant) - Pirate4x4.Com : 4x4 and Off-Road Forum
Toyota VIN decoding
Total 4Runner Sales Info:
Toyota 4Runner Sales Figures - GOOD CAR BAD CAR
Toyota 4Runner - Wikipedia, the free encyclopedia
Head Gasket production information from this site:
2005 Toyota 4Runner 11-04 Cylinder Head Parts
(It appears the phase in of the new head gaskets for production purposes started in August 2005 and ended in November 2005, anything after November 2005 seems to be assured of having the new head gasket installed at the factory)
V6 exploded View link from same site:
ILLUST NO. 1 OF 2 ----- (0211- )1GRFE
If you've experienced a failed head gasket, please reply with your
Model year
Mileage at failure
Cylinder,
Production Date (on driver door jamb sticker),
11th digit of VIN (This denotes the plant of manufacture from link above) (0=Tahara, 8 or 9 = Hino or K = Japan)
EIN (Engine Identification Number) Is found on rear passenger side stamped into engine (next to VIN plate on engine).
I will update the attached file periodically as members share the above information concerning their head gasket failure. Hopefully, we can then use this information to see if there are any correlations between EIN serial number and/or vehicle production facility with the reported failures.
Also attached is a troubleshooting and diagnosis procedure I found that may be useful for cylinder misfire codes on the 1GR-FE engine.
