i have a '98 tacoma w/ the 4cyl. w/47,000 miles. the motor has started 'knocking' on a cold startup for about 30 seconds. does any one here have any experience or opinion? the local dealer calls it 'piston slap' and says i shouldn't worry about it. what do you think?
engine noise
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Check to see if your PCV valve is still good or if it's clogged, and also check your Knock sensor to see if it works too. I had the problem and it was my PCV valve that was bad. I've got about 47K on my 97 and about a month after I put on my intake I had the same thing. Latez
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