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Knocking on startup

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Old 04-06-2002, 08:50 PM
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Default Knocking on startup

Always when I start my car up for the first time or when its had enough time to cool down (like 30 mins in 50 degree weather) I get a kn0ocking noise for like 2 seconds then no more. The car then runs SMOOTH. Any ideas.

ASlso this is an EK with a B16A2 with ITR valves and valvetrain, ITR IM, and 11.3:1 CR. Also timing is set at about 18. Also I think it makes that noise at 16.
Old 04-06-2002, 08:57 PM
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Default Re: Knocking on startup (CivicEK.PDX)

hey, any symptoms of where the knocking noise might be coming from?
is it near starter.......tranny, inside the engine?
details details
Old 04-06-2002, 11:02 PM
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Default Re: Knocking on startup (poison)

mine makes that noise too,

stock B16A with K&N pod filter.

i think it sounds like a'knock' ie pre-detonation.

not sure why, but cause it only happens at start-up, i never really thought much of it...

t..
Old 04-07-2002, 03:29 AM
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Default Re: Knocking on startup (tinkerbell)

its sound from the driver side.....near the timing belt area. My belt looks STRAIGHT on the alt. Also I noticed that the belt (with the cam gear cover off) has a slight flexing (as in the belt sways/waves) of about 1/5 a cm. Is this normal....or should I maybe try and tighten it up. Hmmmmm.........
Old 04-07-2002, 06:10 AM
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Default Re: Knocking on startup (CivicEK.PDX)

if its a hard metal sound there is a 100% chance it is a main bearing. when you first start your car you have no oil pressure. when there is no lubrication you can hear your knocking thats a rob bearing.
Old 04-07-2002, 01:15 PM
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Default Re: Knocking on startup (rainforest)

I just replaced the bearings. Its like if you tap on wood lightly.......Ill check the bearing when i put in my new motor.
Old 04-07-2002, 05:01 PM
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Default Re: Knocking on startup (CivicEK.PDX)

What kind of pistons are they? With my experience JE's make lots of noise on a cold startup....almost like detonation, but it's piston slap.
Old 04-07-2002, 05:41 PM
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Default Re: Knocking on startup (shamoo)

they are the stock PR3's......
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