Can a Toyota 4Runner have a cracked exhaust manifold?
There’s one issue holding Toyota’s 4.7L V8 (otherwise known as the 2UZ-FE) back from being the perfect engine. At some point, you will wind up with cracked exhaust manifolds on your V8 4runner, Land Cruiser, Tundra, Sequoia or Lexus GX470.
Can a Toyota 2uz engine have a cracked exhaust manifold?
The 2UZ is a legendary engine. Toyota used it across their entire lineup of trucks. It’s powerful, reliable, easy on oil and incredibly well balanced. Unfortunately, it’s not a matter of “if” but rather “when” the exhaust manifolds will crack. You see, they all do it eventually. Every one of them. And they’re very expensive to replace.
Can a cracked exhaust manifold on a Land Cruiser be fixed?
At some point, you will wind up with cracked exhaust manifolds on your V8 4runner, Land Cruiser, Tundra, Sequoia or Lexus GX470. Read on to find out why I believe upgrading to Doug Thorley headers is the best way to fix them. The 2UZ is a legendary engine. Toyota used it across their entire lineup of trucks.
What are the symptoms of a cracked exhaust manifold?
Symptoms of a Cracked Exhaust Manifold. The most common sign of a cracked exhaust manifold is a loud ticking sound coming from the engine bay. This ticking sound will speed up and slow down with the revs of the engine.
Are there any problems with the Toyota 4Runner?
Canadian Gearhead even said that there are “two different types of Toyota 4.7s: the ones that already have cracked manifolds, and the ones that are about to have cracked manifolds.” One owner reporting to CR even went so far as to call it a defect.
Why does my Toyota 4Runner have a secondary converter?
So, as Toyota 4Runner owner forum users explain, to help the V8 comply with emissions standards during cold starts, Toyota incorporated a secondary converter into the exhaust manifold. “No winter maintenance”? Alllllllrighty then
How much horsepower does a V8 4Runner have?
It appeared as though the 30/30 gain was around the 4000-5000 rpm range. Peak gains were around 11 hp and 18 ft lbs if I remember correctly. The added efficiency of these headers over the stock design doesn’t just improve horsepower and torque. They will also boost your fuel economy by as much as 2 miles per gallon!
When does an O2 sensor go bad on a Toyota 4Runner?
Even if you have a 22R engine with the carburetor, there is a chance you have an O2 sensor if that particular motor was built to meet California emissions standards. Typically when an O2 sensor goes bad, it will trigger the check engine light.
Where is the O2 plug on a Toyota 4Runner?
Second O2 sensor and plug. If you have a 1st Gen 4Runner with an O2 sensor, it will be located on the exhaust manifold instead of near the catalytic converter. This can be accessed from above. Installing the new O2 sensor is mostly the reverse of the previous step, except for a few key differences.