Crack in both Exhaust Manifolds, should i fix it now?
#1
Senior Member
Thread Starter
Crack in both Exhaust Manifolds, should i fix it now?
Crack in both Exhaust Manifolds, should i fix it now?
The Gaskets are tight.
the Cracks are acoustic noticeable during acceleration...
If u know it,
I know it so i hear it.
but what could happen?
is it bad for Engine?
in this area is nothing that could be damaged through hot air.
The Gaskets are tight.
the Cracks are acoustic noticeable during acceleration...
If u know it,
I know it so i hear it.
but what could happen?
is it bad for Engine?
in this area is nothing that could be damaged through hot air.
#3
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Join Date: Apr 2012
Location: Warner Robins, GA
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im having sorta of the same issue. Both my manifolds are rusted to hell, have a stud broken on one side and two on the other, and the right rear cat is leaking.... about a $1200 fix at a shop. Im just going to wait and do it myself.
#4
Senior Member
Thread Starter
i have 17.2 MPG (roundabout) and no more Lambda correction
(i have the Wrong Air Problem fixed)
It seems that the Cracks have no affect to the lambda Sensors.
(i have the Wrong Air Problem fixed)
It seems that the Cracks have no affect to the lambda Sensors.
#6
Senior Member
I'd be surprised if this is the case-I'm not saying you're wrong. But any time a pulse of exhaust leaks out of the manifold, a pulse of ambient air leaks in. Because this is so close to the o2 (lambda) sensors, it will almost always have some affect. If you can access the datastream I'm betting you'll find the long term fuel trim is adding fuel.
#7
Senior Member
Thread Starter
I had a Long term Fuel trim on the Right bank, but this was caused in a Leaking PCV Valve Grommet.
Now the banks are quiet similar in Lambda Parameters in Short also long term Fuel trim.
Now the banks are quiet similar in Lambda Parameters in Short also long term Fuel trim.
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#9
Senior Member
Thread Starter
pfpfpfpfpfpfpfpfpfpfpfpfpf
during Acceleration
not as loud as the Exhaust it self.
But when u know it, u hear it.
same sound like a untight Exhaust manifold gasket.
during Acceleration
not as loud as the Exhaust it self.
But when u know it, u hear it.
same sound like a untight Exhaust manifold gasket.