Engine knock

[poochie_albert]

Sir, di ko alam kung D2 ung topic ko

anyway. Nakakasira ba sa makina pag pali nag engine knock or ok lng?
Ano po ba pwede remedies sa engine knock, gamit ko po nissan cefiro with normal unleaded gas

ty poh mga sirs

[niky]

Have all your sensors checked, first. A quick solution to engine knock would be to run it on Blaze or V-Power. I can't remember, but I think the Cefiro specifically requires 95 or greater Octane, so 92 unleaded might be a bit too weak for it.

[userfriendly]

Cefiro requires 95 octane. So you need to use Caltex Gold, Petron XCS plus or Blaze or Shell V Power. Use them and it should solve your engine knock.

[poochie_albert]

Ty po mga sirs. Pero nadadamage ba ung engine pag kumakatok? ty poh ulet

[EssB]

Ty po mga sirs. Pero nadadamage ba ung engine pag kumakatok? ty poh ulet

Knocks can prematurely damage your spark plugs... can also damage the piston rings. At syempre, waste of power... waste of gasoline....

I'm just wondering, wala bang knock sensor ang engine ng Cefiro (automatically retards timing and adjust a/f ratio when knock is detected)?

[non-vtec]

^yes may knock sensor ang cefiro.

i once loaded up with bad fuel and hindi lang knock and detonation ang na-experience ko. pati rough idling.

[vinj]

The Cefiro has a knock sensor but you cannot fully rely on that to prevent knocking.

Try Petron XCS, per my experience ito yung gamay ng Cefiro namin before... it's also one of the cheaper 95 octanes.

[poochie_albert]

Ty po mga sirs ulet. Pero I think wala pa ako nung knock sensor, I forgot to say na A32 year 98 po ung cef ko

[userfriendly]

Are you sure na walang knock sensor ang Cefiro mo? I thought meron, I can be wrong. Since 98 model ka, you definetly need to use 95 Octane fuel. Very sensitive yung early cefiros to fuel. If you load ordinary unleaded aka caltex silver and the like, you are guarnateed to get engine knock. Also your FC will suffer.

[m_ron]

check your owners manual first and see kung what octane it requires.A *true* 93 octane gas is enough for a high powered cars.Also high temp weather can affect engine knocking.Engine knocking will destroy your engine.