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Either you will find water in the oil, giving it a foamy texture and a "chocolate milk" color, or you will have excessive pressure and overheating in the cooling system from exhaust gases getting into the coolant. There are other ways for it to blow out, but these two scenarios make up more than 90% of failures.
Hello Lisa, Rattles are always a fun thing to chase after. The first thing that comes to mind with a rattle under acceleration would be a heat sheild. Over time, heat shields which protect the under body of the car from exhaust heat come loose. Might want to have an exhaust shop take a look at it for you. I have heard of weak tack welds located on the heat sheilds by the catalytic converter. So you can ask an exhaust shop to take a look.
Although if you are one to get down under the car and a bit dirty check it out on your own. You might be able to check without putting the truck on a jack stands or a lift. Basically you will want to ensure the car is cold. If the car has not sit for a little while, I would not recommend touching the exhaust. YOU WILL get burned. :) Once your sure its cold and want to squeeze under the truck you can follow the exhaust tips all the way up to the catalytic converters. See pic below(number 16 is the heat shield). You will see the tin around them and be able to shake them a bit. If you hear your rattle there is your problem. If not check out the other heat shields.
Most likely it's a heat sheild on the converter, maybe the muffler. 1 on top and 1 on the bottom. The heat sheild is welded to the converter, over time they rust away, around the welds. You can use a large diameter worm gear clamp to keep the heat sheild from rattling. The sheilds are in place so if you drive over grass, the heat from the converter won't ignite the grass.
the rattling is most likley a heat sheild that is loose,I see this mostly every day. get some self tapping screws and secure the sheild back in it's place . Don't remove the heat sheild it's there for a reason.
generally, glowing exhaust is a sign of either the engine being severely retarded, fuel mixture being super lean or the catalytic converter on the exhaust being restricted. Check all. Loosing power can be retarded or restricted cat. I'd check cat first.
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