cold start knock

[forcedbseries]

lately when i start my car when its been sittin i will get a quick rattle or knock from the motor but it goes away right away and runs fine and drives fine...any ideas?

the motor is an LS

[b20vDa9]

help this guy out!!!

[forcedbseries]

help this guy out!!!

bump good looks mang

[H23VTECLUDE]

lately when i start my car when its been sittin i will get a quick rattle or knock from the motor but it goes away right away and runs fine and drives fine...any ideas?

the motor is an LS

Sounds like a Rod Bearing thats on its way out. Do you hear it at certian points in the RPM range too? usually around 1800-2800 RPM's. Could also be the Timing Belt slapping the Covers, or Could have loose Valve clearances, but you would most likely hear those all the time. B18A, B18B, B20B, & B20Z's are all prone to Rod Bearing failures, due to their stroke size. Hope I could help.

[forcedbseries]

Sounds like a Rod Bearing thats on its way out. Do it hear at certian points in the RPM range too? usually around 1800-2800 RPM's. Could also be the Timing Belt slapping the Covers, or Could have loose Valve clearances, but you would most likely hear those all the time. B18A, B18B, B20B, & B20Z's are all prone to Rod Bearing failures, due to their stroke size. Hope I could help.

damn lol it only happens when i first start it for only a second and i dont hear anything when im driving at all

[H23VTECLUDE]

damn lol it only happens when i first start it for only a second and i dont hear anything when im driving at all

Oil pump could be weak, which would cause noise when started until the pump primed.

[forcedbseries]

Oil pump could be weak, which would cause noise when started until the pump primed.

any ideas on what i should go about doin to the car

[H23VTECLUDE]

any ideas on what i should go about doin to the car

You can take Oil Pressure test Readings & compare to Factory Specs, Or you can drop the Oil pan & inspect for Bearing Soup(Chunk's of copper bearing) in the bottom of the pan. I have personally seen, where the lower end bearings fail/wear & all the copper shavings from the bearings cloggs the Oil pick-up screen & cause low oil pressure, which will in-turn, starve the rest of the bearings, which causes Major Bearing failure. If all that goes well, then Check timing belt tension, & Valve clearances.

[forcedbseries]

You can take Oil Pressure test Readings & compare to Factory Specs, Or you can drop the Oil pan & inspect for Bearing Soup(Chunk's of copper bearing) in the bottom of the pan. I have personally seen, where the lower end bearings fail/wear & all the copper shavings from the bearings cloggs the Oil pick-up screen & cause low oil pressure, which will in-turn, starve the rest of the bearings, which causes Major Bearing failure. If all that goes well, then Check timing belt tension, & Valve clearances.

thanx alot my dude...

[AWDream]

yeah johnny, that sounds like the very beginnings of a rod knock or an oil pump that may cause an issue in the future. how bout the summer, did it do it then? or now that it's getting colder only? may be that you're running the wrong weight oil, or that there's simply not enough oil in the motor?

[19integra91]

if u need an oil pressure gauge to check, i have one so we can hook that bad boy up to check...if oil pressure isnt the issue, time to rebuild or get another ls bottom end...whichever u feel is best

[forcedbseries]

if u need an oil pressure gauge to check, i have one so we can hook that bad boy up to check...if oil pressure isnt the issue, time to rebuild or get another ls bottom end...whichever u feel is best

well dude if u want to help me out that would b dope

[19integra91]

well dude if u want to help me out that would b dope

gimme a call whenever u wanna do it up...just have to get wire to wire the gauge in

[kayslay]

well lets do it bring it over and murry bring that oil pressure gauge and figuer this ************ out

[sit22 II]

got any lose heat shield can cause a noise similar to bad lower end
fixed lol