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Q: Can holes in the exhaust manifold cause a P0420 code to be thrown?
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Related questions

Can exhaust manifold leak cause you to burn oil?

can exhaust manifold leak cause you to burn oil


Can holes in the exhaust manifold cause a car to throw a P0420 code?

Yes, A hole could cause the O2 sensor to see a lean condition and add excessive amounts of fuel. The excess fuel will damage the converter overtime and cause the code.


What would cause 1988 ford ranger exhaust manifold to get red hot?

exhaust?


Can a crack in a car manifold cause health problems?

if it is the exhaust manifold ,yes. if your breathing in those exhaust fumes you can get carbon monoxide poisoning


What would cause water to leak out at exhaust manifold and tailpipe at same time?

A broken piston ring is the most common cause of water in the exhaust manifold. A bad valve in the cylinder head can also cause the problem.


Will a bad valve cover gasket cause smoke from exhaust?

No, it will not cause smoke from the exhaust pipe. However the leaking oil can drip on the exhaust manifold where it will be burnt and smoke.


What are the symptoms of manifold exhaust gasket leaks on a Chevy truck?

Intake manifold leaks will cause the engine to idle rough and get poor fuel economy. An exhaust manifold will have no symptoms other than the sound of the leak.


What can cause squeaking noise from exhaust manifold after car has been running while?

squeeking from exhaust manifold is caused by a leak allowing exhaust gas to leak. it will only get worse as time goes on unless it is fixed


What can cause oil leaking from behind your exhaust manifold?

Valve cover gasket


Will a crack in the exhaust manifold cause the check engine light to come on?

It could.


Why does the exhaust manifold glow red hot?

Advanced timing can cause that to happen


Can a oil filter cause smoking under the engine?

Yes, if it is leaking or if when it was replaced, oil leaked onto the exhaust or exhaust manifold.