1995 Chevy Blazer Knocking noise

1995 CHEVROLET BLAZER
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MISSVICKI40
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Engine problem
1995 Chevy Blazer 6 cyl Four Wheel Drive Automatic 80K miles
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I started to hear a knocking nosie coming from my engine like a week ago and it seems to be getting worst by the day. I've always maintained the car properly with oild changes etc....the knocking noise is loud, almost as if I was driving without a muffler. Also, when I turn the heat on it smells like burning rubber. What could this be, and can I drive around with it like this? If it is my engine going bad? Is it even worth repairing? I've asked around and I get people telling me it could be the rod & bearings?

Please advise, thank you.
Vicki
Feb 19, 2008 at 11:28 AM
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MASTERTECHTIM
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sounds like a spark plug may have fallen out.
Feb 19, 2008 at 11:56 AM
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MISSVICKI40
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I do appreciate your quick response! I just hate being under pressure now to buy a new car. Does it cost a lot to replace a spark plug? Also, how can someone tell me that engine is shot and that my rod and bearings are the calpruit just by listening to the noise its making. I did take it to a mechanic and this is waht I was told, and he advised me to get rid of the car and buy a new one. Would you recommend that I take it to a repair shop that has a diagnostic machine before I go out ane buy a new car?
Feb 19, 2008 at 12:37 PM
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MASTERTECHTIM
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if he looked at it and said it was a rod bearing then you would have to replace the engine. try getting another opinion before condemning it. any good mechanic should be able to tell just by listening to it.
Feb 19, 2008 at 12:47 PM