kumakalansing yung engine at high speed, need help.

**pyriel** · May 21st, 2009 01:24 PM

hi guys,

i need help. i own this second hand civic 1999 LXi. and parang napansin ko lang is that during high speed and high rev (70~90kph)(2000~2500rpm) may kumakalansing sa engine ko or just under the hood (rigth side) bali in fort of the driver, and when i rev down na wawala din. but if i stop and just rev the engine wala namang tunug. is this normal for civics? because young lumang kotse ko na toyota hindi naman ganun.

thanks...

**ghosthunter** · May 21st, 2009 01:44 PM

Does it sound like rocks in a can?

**oj88** · May 21st, 2009 01:53 PM

^ +1 Engine knock, maybe.

What fuel do you use?

**pyriel** · May 21st, 2009 02:13 PM

hi guys,

it sound like tansan in can, its a high frequency sound. and it only sounds during on the move. im using shell unleaded fuel, i will try to change to 95+ octane and observe if the sound is still present.

thanks.

**ghosthunter** · May 21st, 2009 02:13 PM

Originally Posted by oj88

^ +1 Engine knock, maybe.

What fuel do you use?

Actually I was thinking ignition timing as the potential culprit if it is engine knock.

**ghosthunter** · May 21st, 2009 02:16 PM

Originally Posted by pyriel

it sound like tansan in can, its a high frequency sound. and it only sounds during on the move. im using shell unleaded fuel, i will try to change to 95+ octane and observe if the sound is still present.

Before you go changing fuels, have the ignition timing checked and set to factory specs.

**LHV** · May 21st, 2009 03:21 PM

check mo din wheels at suspension mo tutal sabi mo naman pag hindi high speed wala yung tunog, check mo din glove box baka may items lang dun na natunog he he

**pyriel** · May 21st, 2009 05:57 PM

Originally Posted by ghosthunter

Actually I was thinking ignition timing as the potential culprit if it is engine knock.

sir,

if yung ignition timing is potentially the cause, diba dapat if stationary and nag rev aku I can hear na the sound?

thanks.

**ghosthunter** · May 21st, 2009 06:03 PM

Originally Posted by pyriel

sir,

if yung ignition timing is potentially the cause, diba dapat if stationary and nag rev aku I can hear na the sound?

No necessarily. Depends on the degree of the timing advance.

It could also be the flow of fuel (not enough flow) causing your engine to lean out when heavily loaded.

**pyriel** · May 21st, 2009 06:38 PM

Originally Posted by ghosthunter

No necessarily. Depends on the degree of the timing advance.

It could also be the flow of fuel (not enough flow) causing your engine to lean out when heavily loaded.

sir,

can this cause a long term damage to my engine?

thanks