01-16-2007, 12:26 AM
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#1
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GLS member
Join Date: Dec 2006
Location: Montreal, Qc, Canada
Posts: 1,876
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Cold engine knocking?
I've started to notify something since the cold weather just arrive. When I start my car after it has sit for all night for exemple, The car at start rev at about 1600 rpm which is normal for a cold engine. The problem is that I hear a knocking sound from the engine for a short duration until the car gets back to idleing at around 1100 rpm.
Is this a common sound at a cold start?
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2 door 2000 Black GX With a stick: M45 eaton supercharger - Quad4's 57mm Throttle body - Custom WAI - KYB GR-2 struts - CM Lowering springs - Front and rear strut tower brace - R1 concept zinc plated drilled/slotted rotors with semi-metallic pads - short shifter.
Quote:
Originally Posted by Alerosaint
the #6 bolt torque..its impossible to get...unless I use telekenesis
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01-16-2007, 02:23 AM
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#2
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GLS member
Join Date: Nov 2003
Location: Fairfax, VA
Posts: 3,505
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is it more of a ticking?
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01-16-2007, 03:55 AM
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#3
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GLS member
Join Date: Dec 2006
Location: Montreal, Qc, Canada
Posts: 1,876
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I can feel a vibration when the "knocking" happens. after lets say 45 seconds it disapears.
__________________
2 door 2000 Black GX With a stick: M45 eaton supercharger - Quad4's 57mm Throttle body - Custom WAI - KYB GR-2 struts - CM Lowering springs - Front and rear strut tower brace - R1 concept zinc plated drilled/slotted rotors with semi-metallic pads - short shifter.
Quote:
Originally Posted by Alerosaint
the #6 bolt torque..its impossible to get...unless I use telekenesis
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01-16-2007, 08:56 AM
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#4
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Designated Drunk
Join Date: Nov 2003
Location: New Liskeard, Ontario
Posts: 6,873
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what kind of mileage have you got?
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I'm baaaackk
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01-16-2007, 11:54 AM
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#5
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Aleromod part owner
Join Date: Nov 2003
Location: Far Northeast Philadelphia, PA
Posts: 18,199
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Quote:
Originally Posted by sound_xtreme
is it more of a ticking?
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Mine ticks too, but the knocking, any lights?
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33% ALEROMOD OWNER!!
2000 Olds Alero 3400 SFI 14.53 @ 94.93
1985 Olds Delta 88 307 SBO 17.96 @ 76.99
2007 Volvo V50 T5 6M 15.782 @ 89.12
www.facebook.com/kb0177
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01-16-2007, 11:57 AM
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#6
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GL Member
Join Date: Apr 2005
Location: London, Ontario, Canada
Posts: 762
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Mine ticks and in the cold it is even worse but nothing to worry about. It seems GM engines do this a lot.
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2004 Pontiac Grand Prix GTP CompG -- Supercharged 3800 V6
??,??? km
??,??? miles
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01-16-2007, 12:02 PM
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#7
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GLS member
Join Date: Oct 2006
Location: Phoenix
Posts: 4,284
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once again, I'm going to go with "Move South"
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2003 2.2 Eco http://www.cardomain.com/ride/2478473 SOLD
1994 Chevy Suburban aka The Zombie Mower 4" Rancho suspension lift 2" body lift. 315/75/16 Mickey Thompson Radial M/Ts 10000K HID 12" JL W3 Subs in custom box 1000W Alpine mono amp 1F capacitor 6.5" JL mids 4X6 Pioneers in dash 450W Alpine 4 channel Dynomax cat & exhaust
2007 Cadillac Escalade EXT chameleon paint, Cadillac 22" wheels
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01-16-2007, 12:27 PM
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#8
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GX Member
Join Date: Nov 2005
Location: Milwaukee
Posts: 28
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mine ticks also in the cold. in my beretta, the engine always ticked, but its up to 210,000 miles and still going.
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01-16-2007, 12:49 PM
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#9
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V.I.P. Member
Join Date: Nov 2003
Location: Vancouver, BC Canada EH!
Posts: 1,483
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the 3400 is known for its "piston slap". i have a loud tick or knock for the first min until the pistons warm up enough to fill in the slight gap. the GM guys tell me that the pistons are a bit too small for the cylinder. there is a fix, but its only temporay. After that it goes away and sounds fine.
Its just one more thing you will have to live with. Ive had the piston slap since I go the car at the 40,000KM mark. Its a 2000. now has 82,000KM.
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Sound: Eclipse 5435, Hertz Space 6's, Soundstream SPL50's, PG Xenon X100.4, JL 10w6v2 D4, JL 500/1
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01-16-2007, 01:42 PM
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#10
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GLS member
Join Date: Nov 2003
Location: Fairfax, VA
Posts: 3,505
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theres 2 different ticks really, theres the piston slap and lifter ticks. piston slap = normal. lifter tick = bad. lifters are damn loud
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01-18-2007, 04:18 AM
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#11
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GLS member
Join Date: Dec 2006
Location: Montreal, Qc, Canada
Posts: 1,876
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Nah, its not lifters. And maybe knocking isn't the right word to use. It's like something is loose inside the engine. I have 107 000km (around 68 000 miles)
No lights comes on.
to make it short:
-Start engine in the cold
-1600 rpm rev
-each time i hear the noise the engine's revolution varry slightly btw 1500 and 1600
-45 seconds later, revolutions are under 1500 and noise is gone and it's running fine.
I'm guessing its only the engine that is too cold. I was just wondering if ppl with the 2.4L were getting something similar.
Also, does anyone have a sound clip of his 2.4? I would like to know how it sounds to see if it compares to mine. thank you
__________________
2 door 2000 Black GX With a stick: M45 eaton supercharger - Quad4's 57mm Throttle body - Custom WAI - KYB GR-2 struts - CM Lowering springs - Front and rear strut tower brace - R1 concept zinc plated drilled/slotted rotors with semi-metallic pads - short shifter.
Quote:
Originally Posted by Alerosaint
the #6 bolt torque..its impossible to get...unless I use telekenesis
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Last edited by Vinalero : 01-18-2007 at 04:36 AM.
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02-06-2007, 07:10 PM
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#12
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GLS member
Join Date: Aug 2006
Location: Grand Forks, ND for school; Langdon, ND home
Posts: 2,632
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same w\our f-150. it knocks unitll it warms up a bit a the pistons swell some. its common. vibration could also be if u were plowing snow. that happens to me a lot after going thourgh a couple small drifts (halfway up door). snow get stuck b\t engine and fan and knoks the fan out of wack.
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2001½ F150 XLT Crew Cab- true dual glasspacks with x-pipe, AEM intake, SCT X3 with VMP custom tunes, full stereo system, HID 55w heads and 35w fogs, 35% tint front and 20% rear, Lightning tail lights
04 F6 Sno Pro Team edition- MBRP race can, ODS clutch kit
01 YZ125- bored out to 144, PnP cylinder and head, Pro Circuit WORKS suspension, many other mods
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03-24-2008, 04:46 PM
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#13
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GX Member
Join Date: Mar 2007
Location: p-town ohio
Posts: 11
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