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January 18th, 2006 11:56 PM #1
good evening fellow tsikoters,
once again i need your advice. do you guys ever notice that knocking sound whenever you try to accelerate? yun para bang mababa pa yung RPMs mo tapos you're on a higher gear. it makes that sound e, tapos nawawala rin pag medyo mataas na yung RPMs ko or when your car reaches an acceptable speed. this happens to me alot, especially sa 2nd gear, when im at an inclined road (pataas) or basta naka on yung aircon ko. parang nawawalan ng power. pero pag naka off yung aircon ko. nawawala or di ganon ka noticeable yung sound.
i used to try this on our vtec civic but it doesn't happen naman, i mean i dont hear any knocking sound.
dati this happens when i use unleaded fuel, but when i changed to a higher octane fuel nawala siya. ngayon bumalik nanaman yung knocking sound. i know it's not the fuel kasi i've been using blaze for almost a month na pero i can still here the knocking sound.
any ideas to what causes this?
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January 19th, 2006 07:07 AM #2
ser baka you shift prematurely to a higher gear. i'm experiencing the same problem kapag low octane ang gamit kong gasolina (especially kapag shell super unleaded). yun yata yung term na "tupe"...meaning ata nun e hindi nagburn fully yung gasoline kaya less ang power especially when on an inclined road.
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January 19th, 2006 10:28 AM #3
It's called detonation or tope...
Timing isn't correct. Have it checked or manually retard it. If you have a car with a knock sensor, then have that checked since the knock sensor prevents detonation from continuing.
Using higher octane gas is a temp fix, unless your car requires high octane to begin with.
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Verified Tsikot Member
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- Sep 2005
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January 19th, 2006 11:05 AM #4Tama si theveed!
malamang wala sa tamang timing ang engine mo. have it check by a reputable mechanic hindi dun sa nanghuhula lang.
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January 19th, 2006 11:07 AM #5Originally Posted by theveed
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January 19th, 2006 01:30 PM #6
maraming salamat sa lahat na nag reply.
umzzzzz, that's what i thought nung umpisa, na baka premature yung pag shift ko. pero kahit umaabot na sa 4k rpm yung 1st gear ko, pag shift ko sa second may tope sound pa rin e.
theveed, betz, i'll have my timing checked, i think sa speedyfix kaya naman nila to. and besides malapit pa sila sa amin.
btw, does the 97 cefiro have a knock sensor?
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January 19th, 2006 01:37 PM #7
oh yes it does hehe, since 93 ata na nissans meron...
mine is slightly defective as well, i ordered one sa US already, mahal dito eh mga 9K isa...
Migs (speedyfix) can scan your computer, if yan ang may sala lalabas yan as error code 0304 I think, pero di iilaw ang CEL mo.
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January 20th, 2006 03:55 PM #8Originally Posted by theveed
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January 20th, 2006 04:18 PM #9Originally Posted by attic_dude
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January 20th, 2006 04:32 PM #10Originally Posted by xto
Buhay na buhay ang BGC this evening. Bukas halos lahat ng restaurants. Sabi pa nung isang cashier...
Traffic!