knocking sound at cold start

**jun** · March 20th, 2008 04:32 AM

lately everytime that i start my car in the morning i hear a knocking sound. but once the car reaches its operating temperature nawawala na yung knocking sound. is there something wrong with my engine? im a newbie so ur answer will be very much appreciated.

TIA

**aga_cruz** · March 20th, 2008 09:22 AM

natural lang po yan sir dahil malamig pa kahit yung van ko ganyan din pero diesel yun..

antayin pa in natin ang ibang tsikoters

**glenngj** · March 20th, 2008 10:59 AM

this could be a piston slap, anyway check out this link for more info about piston slap http://www.pistonslap.com/whatisit.htm

**KBR** · March 21st, 2008 09:42 AM

looks like a classic case of a Piston Slap. but then, just to make sure, have your Oil Pressure checked and also, how many miles does your engine have? did it just happen recently or is it been doin it for a while now?

aite, peace.

**yapoy86** · March 22nd, 2008 12:21 PM

baka naman nadidinig mo lang yung lagitik ng tappets, during cold start minsan maingay talaga yung mga mga tappets parang napitik lalo na pag malamig ang panahon... sa diesel engines common yan lalo na pag medyo luma na makina.. sa gas engine na experience ko din yan sa mazda 323 ko DOHC engine... medyo madidinig mo na parang may napitik sa loob.. mahina lang naman pero pag uminit na mawawala din..

**speedyfix** · March 24th, 2008 08:38 AM

what engine? it shouldn't be noisy. what oil are you using? minsan the wrong viscosity causes the noise till the oil heats up.

**robin_micmac** · April 4th, 2008 10:32 AM

Meron kasi mga cars that run hydraulic lifters sa tappets..pag malamig pa makapal pa yung oil hindi cya makapasok dun sa hydraulic lifters..ganyan dati yung isang car namin..was running 20w50 tpos nung palit ako to 5w40 nawala na yung sound khit cold starts

**speedyfix** · April 9th, 2008 12:42 AM

yup, kaya always run the recommended viscosity for the specific engine.

**binny** · April 9th, 2008 11:49 PM

mga bossing! since nasa topic na din tayo ng oil viscosity, kahit OT, itatanong ko na din. alam ba ninyo kung ano ang bagay sa engine ng 97 lancer "itlog"? pasensya na at sobrang newbie. TYIA!

**KBR** · April 11th, 2008 11:47 PM

Originally Posted by binny

mga bossing! since nasa topic na din tayo ng oil viscosity, kahit OT, itatanong ko na din. alam ba ninyo kung ano ang bagay sa engine ng 97 lancer "itlog"? pasensya na at sobrang newbie. TYIA!

hey bro, try using 10W30 engine oil. kahit na conventional "dino" oil, ok lang.

aite, peace.