Question about Toyota Cressida

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Exhaust leak a leak from the back part of the exhaust (manifold?)on a 92 Cressida butam unable to access it. How do I plug it or repair it?

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  • Toyota Master
  • 20,706 Answers

Exhaust leaks are common, and very dangerous.
if parked say in a snow bank , you can get CO death easy.
odorless and fall asleep (no pain) death.
so keep car out side, and not near snow....
safety first.
first off, i dont know what back means.
the exhaust on most cars runs from front to rear.
from 6 feet to 10 feet.
exhausts can leak for a variety of reasons.
1: bolts fell off.
2: gasket failures
3: cracks.
4 :rust through.
5: parts fell disconnected due to clamp failures.
6: road hazard damaged.

on cars, damage has no limits. (moving running cars)
so what we d,o is have a professional look at it (ASE mech)
to see cause and damage and suggest solutions.

one other way is to take a photo of said damage
or point to crack, in photo and say,
what do you think.
then an only then can a web bunny help you./



Posted on Dec 28, 2013

6 Suggested Answers

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Posted on Jan 02, 2017

  • 398 Answers

SOURCE: 1988 Ford F150 exhaust manifold leak

autozone.com repair section

Posted on Apr 03, 2009

mkv0525
  • 358 Answers

SOURCE: exhaust manifold leak-2001 sequoia

toyota has a big problem with exhaust manifolds craking be hind the heat shields. will have to reolce both sooner or later.not an light job.

Posted on May 20, 2009

  • 101 Answers

SOURCE: exhaust leak somewhere near exhaust manifold or

the exhaust manifolds on those are know to crack just above where it meets the collector

Posted on Nov 25, 2009

  • 10 Answers

SOURCE: 95 f150 4.9L leaks from exhaust manifold with a

You might have a warped exhaust manifold, or head. You can check this with a straight edge and a feeler gauge. Also check for hairline cracks.

Is the carbon on the outside of the injectors, or on the inside? If it's on the inside then it could be from cheap gas. Do a fuel injector service to get them cleaned out.

If you had exhaust leaking into the intake manifold you would definitely know about it(backfire).

Posted on Dec 01, 2009

  • 239 Answers

SOURCE: what repair is needed to stop exhaust manifold leak

It depends on the leak. First of all - see if you can see any cracks on the manifold - telltale signs would be a visible crack and black residue around it from exhaust. If you see that the manifold should be replaced. - welding would be a possible alternative. If there are no cracks - check all the nuts and studs to make sure they are tight. Make sure the exhaust pipe is tight and not leaking at the connection. If everything looks tight and secure - change the exhaust manifold gasket. All of that could be done at home depending on your comfort leel with the tools and time available.

Posted on Dec 19, 2009

Testimonial: "That was some very helpful advice.I thought about it at first but wasn't sure,but now I know.Thanks a lot for the info dude. "dave""

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p0134 is the upstream 02 sensor staying center and will cause a drivability problem. you don't need to replace both of them, the one at fault is the upstream one, mounted on the exhaust manifold.I do it under the vehicle while on a lift, if you can see it from behind the engine and access it, just remove it. spray it down with some penetrating liquid before attempting to remove it

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How to change an exhaust manifold leak 7.5L


Right-Hand
Removal
  1. Remove spark plug heat shield (12A406).
  1. Remove distributor to spark plug wires (12286) using Spark Plug Wire Remover T74P-6666-A.
    1. Disconnect muffler inlet pipe.
    1. If equipped with secondary air injection, disconnect the secondary air injection check valve tube (9B480).
    1. Remove attaching bolts and right exhaust manifold (9430).
    1. Inspect joint faces for signs fo exhaust leaks, cracks or any defect that would make exhaust manifold unfit for use







Left-Hand Removal






1. Remove oil level indicator tube (6754).
  1. Remove spark plug heat shield.
  1. Remove distributor to spark plug wires using Spark Plug Wire Remover T74P-6666-A.
  1. Disconnect EGR valve to exhaust manifold tube (9D477). If equipped with air injection, disconnect the secondary air injection check valve tube.
  1. Disconnect muffler inlet pipe.
  1. Remove attaching bolts and exhaust manifold (9431).
  1. Inspect joint faces for signs of exhaust leaks, cracks or any defect that would make the exhaust manifold unfit for use.
Installation
  1. Clean mating surfaces of right exhaust manifold or left exhaust manifold and cylinder head (6049). Clean mounting flange of right exhaust manifold or left exhaust manifold and inlet pipe(s). Clean mounting surface for air injection tube or right exhaust manifold. Apply light film of Premium Long-Life Grease XG-1-C or -K or equivalent meeting Ford specification ESA-M1C75-B to right exhaust manifold or left exhaust manifold.
  1. Position right exhaust manifold or left exhaust manifold on cylinder head. Install attaching bolts and washers, starting at fourth bolt hole from front of each right exhaust manifold or left exhaust manifold. Tighten bolts to 34-47 Nm (25-35 lb-ft), working from center right to both ends.
    1. Position inlet pipes to right exhaust manifold or left exhaust manifold. Install attaching nuts and tighten to 34-47 Nm (25-35 lb-ft).
    1. Position the secondary air injection check valve tube and the secondary air injection tube gasket (9C435) at rear of right-hand exhaust manifold. Install attaching bolts and tighten to 19-25 Nm (14-18 lb-ft).
    1. Attach the secondary air injection manifold tube (9B449) to left-hand exhaust manifold fitting (located under EGR tube). Tighten nut to 30-40 Nm (22-30 lb-ft).
    1. Attach the secondary air injection check valve tube to rear of right-hand cylinder head. Tighten bolts to 75-85 Nm (56-62 lb-ft).
      1. Connect EGR valve to exhaust manifold tube to left exhaust manifold, if removed. Tighten nut to 53-72 Nm (39-53 lb-ft).
      1. Install spark plug heat shield and distributor to spark plug wires.
      1. Install oil level indicator tube to left exhaust manifold, if removed. Tighten nut to 13-24 Nm (10-18 lb-ft).
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Hope this helps you...WF †

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Escaping gas is bad for the environment. This also causes gas to enter the manifold and make its way to the valves. The temperature of the incoming air is very cold compared to the combustion chamber and can cause damage the your valves by stressing them.
If you find no leak, then you may consider the sensor may be faulty or the leak is very small.
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1 Answer

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