Cold start rattle 4.6 - Ford Mustang Forums : Corral.net Mustang Forum
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post #1 of 18 Old 09-10-2019, 05:19 PM Thread Starter
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Cold start rattle 4.6

I have a completely stock 4.6 2001 auto 88000 miles. Rattle on cold start up.

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post #2 of 18 Old 09-10-2019, 05:21 PM Thread Starter
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I know it's coming from the heads. Can take a screw driver to my ear and that's were it is loadest.

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post #3 of 18 Old 09-10-2019, 05:50 PM
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ok
thadude likes this.
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post #4 of 18 Old 09-10-2019, 08:18 PM
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Maybe timing chain tensioners or lifters. What kind of oil filter are you using? I only use the Motorcraft Ford one due to the anti-drain back valving in it. It sounds like your valve train is dry on start if its not the chains.
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post #5 of 18 Old 09-10-2019, 08:47 PM
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where the &8jj is the question?

im with Decipha............'ok'

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
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post #6 of 18 Old 09-11-2019, 09:03 AM Thread Starter
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K&n filter 5w20 oil full synthetic. If it was the timing chain, I would think I would hear the noise coming from the timing cover right. I was told not to get a cheap filter. No ok be ever said it had to be a motorcraft.
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post #7 of 18 Old 09-11-2019, 09:05 AM Thread Starter
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Question was what the hell is it.
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post #8 of 18 Old 09-11-2019, 09:06 AM
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Make sure the oil filter has an anti-drain back valve, if it doesn't the filter will be empty every time you start the car. Motorcraft filters have this valve in them.
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post #9 of 18 Old 09-11-2019, 09:56 AM Thread Starter
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Just loosened my oil filter oil came out and I called k&n they said the filter has the anti drain back valve
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post #10 of 18 Old 09-11-2019, 10:06 AM Thread Starter
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Any way to see if the timing chain has slack in it with out taking timing cover off? In not long get the car. I did not notic the tap/rattle till I changed my oil 5w20 full synthetic.it had a fram on it so that's what i put back on. Then heard the rattle so I did some reading up. Saw the thing about the anti drain bike valve and to make sure i got a good filter so i put k&n on it. Also did by spark plugs and doubled checked they are tight.

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post #11 of 18 Old 09-11-2019, 04:05 PM
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Did you just buy this used, and this was the first oil change?

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
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post #12 of 18 Old 09-11-2019, 08:19 PM Thread Starter
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Yeas been sitting up for a min because of fuel pump. A old man had it. I took valve cover off. Every thing looks good on driver. Idk about passages side yet. I think it would be wise to re torque the bolts
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post #13 of 18 Old 09-11-2019, 08:41 PM
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re type that, so I can understand what you are trying to convey

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
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post #14 of 18 Old 09-12-2019, 02:32 PM Thread Starter
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Found problem. Bought the best plugs autozone offered for my car. They were a hair to long end of the spark plug was hitting the pistion
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post #15 of 18 Old 09-12-2019, 09:28 PM
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I was going to say the spark plug is probably too long.
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post #16 of 18 Old 09-13-2019, 08:36 PM Thread Starter
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What torque should I use on the spark plugs. Does anybody know?
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post #17 of 18 Old 09-13-2019, 08:38 PM Thread Starter
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I put my original spark plugs back in and the problem was gone I thought. Sounds like I can still hear it a little sometimes.
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post #18 of 18 Old 09-13-2019, 08:57 PM Thread Starter
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How do you select a thread prefix on a post
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