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Joined: Oct 2002
Posts: 673
XxMerlinxX
Senior Member
XxMerlinxX
2000 Silver Toyota Celica
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2000 Toyota Celica

Joined: Oct 2002
Posts: 673
Hartsville/Greenwood, SC
Dec 7, 2:28pm - #66084 
Engine Knock (need all our super smart guys on this)

I want to put together a comprehensive post on what it is and what you can do about it. Mainly because I have it and I want it gone, but then other people will be able to look it up also.

So, with that said. What is it? What causes it? And what can we do about it?


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spaztikid
dikitzaps
spaztikid
dikitzaps
1974 Toyota Celica

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LA
Dec 7, 2:30pm - #66085 

Joined: Nov 2002
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CelicaTC
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CelicaTC
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2003 Toyota Celica GT

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Posts: 199
Belgium
Dec 7, 2:32pm - #66086 
Probably you have to use higher octane number petrol.

Click This

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XxMerlinxX
Senior Member
XxMerlinxX
2000 Silver Toyota Celica
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2000 Toyota Celica

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Posts: 673
Hartsville/Greenwood, SC
Dec 7, 2:34pm - #66087 
Ok, now if you have knock, and you put in "Valve Silencer" is that the same thing. Or is silencing the valves and taking away knock two completely different things?


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CelicaTC
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CelicaTC
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2003 Toyota Celica GT

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Posts: 199
Belgium
Dec 7, 2:41pm - #66088 
Originally Posted by XxMerlinxX
Ok, now if you have knock, and you put in "Valve Silencer" is that the same thing. Or is silencing the valves and taking away knock two completely different things?


I don't know "valve silencer", but don't add it to your engine (if it is a octane booster it might help).

I think you need better fuel (higher octane number)

Which fuel do you use?

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XxMerlinxX
Senior Member
XxMerlinxX
2000 Silver Toyota Celica
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2000 Toyota Celica

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Posts: 673
Hartsville/Greenwood, SC
Dec 7, 2:48pm - #66089 
93 Octane from BP


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CelicaTC
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CelicaTC
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2003 Toyota Celica GT

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Belgium
Dec 7, 2:49pm - #66090 
OK then, I leave this for someone else grin

Because 93 octane is good enough

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XxMerlinxX
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XxMerlinxX
2000 Silver Toyota Celica
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2000 Toyota Celica

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Posts: 673
Hartsville/Greenwood, SC
Dec 7, 2:58pm - #66091 
Think all I need is some octane booster?


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racelicar
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racelicar
1990 ice blue Toyota Celica GT
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1990 Toyota Celica GT

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Posts: 19
Dec 7, 3:06pm - #66092 
could be higher octane, also you may need
fuel injector cleaner if your injectors have many miles on them.Also check your fuel filter and spark plugs.

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shabu
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shabu
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Dec 7, 6:56pm - #66093 
What he said and reset your ecu

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Michael Aristide
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Michael Aristide
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Miami/Daytona Beach
Dec 7, 10:00pm - #66094 
Knock is the when the air/fuel mixture spontaneously ignites prior to the spark being applied. It is caused either by high pressure or temperature than normal. Higher octane gas burns slower and is more resistant to spontaneous ignition therefor a high compression engine like the Celica's needs premium(at least 92 octane) gas. If your spark plug has excess carbon build-up it can create a hot spot in the combustion chamber or if one of the injectors (like was already mentioned) is clogged it can create a lean condition which increases the cylinder temp. causing knock. Check your plugs and if you have white specks on it, you were running lean.

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Steven
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Steven
2001 Spectra Blue Mica Toyota Celica GTS
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2001 Toyota Celica GTS

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Riverside, CA
Dec 7, 10:54pm - #66095 

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