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That's all down to how hard you run the engine. They can get glowing hot up by the exhaust ports.
It could be condensation from hot exhaust gases on the cool exhaust pipe.
Ignition timing is off.
I don't think so. Pvc pipe cannot even used for hot water distribution. I don't know how hot the engine exhaust is, but I'm pretty sure it would melt the pipe. ( I am a master plumber.) The temperature of the exhaust just after the catalytic converter can reach 700 degrees F.
Anything that becomes really hot when the car is operating... engine block, fluids, exhaust pipe... wait for the thing to cool down before working on it.
Anything that becomes really hot when the car is operating... engine block, fluids, exhaust pipe... wait for the thing to cool down before working on it.
It can. Backfires are caused by raw fuel in the exhaust pipe and lit off by hot gases from the cylinders. If enough fuel enters the exhaust system and the muffler or catalytic converter, it can cause enough pressure once lit to split pipes and mufflers.
From the combustion process in the engine.
it is burning way too rich.
Take off your exhaust pipe and muffler. It is against the law to drive a vehicle on public roads without a proper exhaust system. or you could take of the big round exaust filter and replace it with a peice of pipe or a hot dog exaust to make it a deeper sound.
Car exhaust can reach temps of 500 degrees F. With the hottest points being the exhaust manifolods/headers, and the catalytic converter.
There are a couple websites that have tutorials on an exhaust system pipe bender and the best methods to use. Check the hotrodder.com forums. Someone asked about an exhaust pipe bender and there are several good responses.