How hard is it to take off the rear exhaust manifold on a 2003 grand prix Gt 3.8
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08-02-2013
How hard is it to take off the rear exhaust manifold on a 2003 grand prix Gt 3.8
08-02-2013
Not super hard.
Unbolt the downpipe and unplug the front o2 sensor. Remove the 4 bolts for the crossover pipe. I would take the spark plug wires out and remove the plugs, then unbolt the manifold from the head. The EGR pipes and valve will need to be remove aswell for extra room.
It will help to unbolt the front 2 motor mounts and use a ratchet strap on th engine lift bracket to pull the motor forward 1-2in to give yourself extra room.
Also curious as to why you need it removed.
08-02-2013
welcome FFDP lol think he is trying to port it or do something dumb. But really welcome to the forum
Originally Posted by Bio248
Originally Posted by Kilroy
08-03-2013
The manifold gasket is blown or the manifold is cracked. I have a exhaust leak when I first start the car, but after it runs for a few min, you cannot hear it anymore. I already replaced the flange gasket.
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