V6 (1994-2004) Mustangs Technical discussions on the 3.8L and 3.9L V6 torque monsters

engine knocks at cold start

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Old May 28, 2006 | 03:31 PM
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Default engine knocks at cold start

my 2004 stang at cold start up knocks...... is this normal and could it be a bad spark plug or a bad injector..............or could it be because of running 89 octaine gas.................when engine is warm it does not knock.........or the noise goes away...........pleae advise
Old May 28, 2006 | 03:35 PM
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Default RE: engine knocks at cold start

is it just when u start it? or whenever its running and its cold?
Old May 28, 2006 | 03:40 PM
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Default RE: engine knocks at cold start

when you first start it after leaving it over night
Old May 28, 2006 | 04:11 PM
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Default RE: engine knocks at cold start

mine makes a sound when it first starts cold like a "ping ping ping" but only for like 2-3 seconds, i talked to my friend who used to be a mechanic and he said it was probably the starter but idk, i havent really gotten it checked out because my stang runs great.
Old May 28, 2006 | 05:04 PM
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Default RE: engine knocks at cold start

What kind of oil filter is on it?
Old May 28, 2006 | 05:13 PM
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Default RE: engine knocks at cold start

what kinda gas?
Old May 28, 2006 | 05:26 PM
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Default RE: engine knocks at cold start

motorcraft oil filter and arco gas
Old May 28, 2006 | 06:16 PM
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Default RE: engine knocks at cold start

check the oil level ?
Old May 28, 2006 | 06:22 PM
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Default RE: engine knocks at cold start

i just had the oil changed at the dealer 2 day ago ...........thinking it might help
Old May 28, 2006 | 07:18 PM
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Default RE: engine knocks at cold start

what type of gas...not brand



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