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Old 09-24-2003, 09:06 PM   #1
echo710
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Join Date: Sep 2003
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Angry Knocking sound

I've got a 2000 chevy tracker and i've recently started to hear knocking sounds coming from under the hood, it only happens while going uphill, then starts to struggle at about 50-70mph, the sound gets louder when the a/c in on.It has the correct level of engine oil and transmission fluid. Although due for an oil change, what could possibly be causing the knocking?
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Old 11-13-2003, 07:16 PM   #2
szabotage
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if its a knock you hear it could be your crank

if you hear a clack its your valves

but if you hear a ping then use a higher octane fuel
pinging occurs when you put the engine under load while using crappy fuel
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