Previous Thread
Next Thread
New Reply
Print Thread
Joined: Oct 2002
Posts: 673
XxMerlinxX
Senior Member
XxMerlinxX Dec 7, 9:28pm - #66084 
2000 Silver Toyota Celica
Senior Member
2000 Toyota Celica

Joined: Oct 2002
Posts: 673
Hartsville/Greenwood, SC
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?

[Linked Image]
Joined: May 2003
Posts: 5,346
spaztikid
dikitzaps
spaztikid Dec 7, 9:30pm - #66085 
dikitzaps
1974 Toyota Celica

Joined: May 2003
Posts: 5,346
LA
Joined: Nov 2002
Posts: 199
CelicaTC
Member
CelicaTC Dec 7, 9:32pm - #66086 
Member
2003 Toyota Celica GT

Joined: Nov 2002
Posts: 199
Belgium
Probably you have to use higher octane number petrol.

Click This
Joined: Oct 2002
Posts: 673
XxMerlinxX
Senior Member
XxMerlinxX Dec 7, 9:34pm - #66087 
2000 Silver Toyota Celica
Senior Member
2000 Toyota Celica

Joined: Oct 2002
Posts: 673
Hartsville/Greenwood, SC
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?

[Linked Image]
Joined: Nov 2002
Posts: 199
CelicaTC
Member
CelicaTC Dec 7, 9:41pm - #66088 
Member
2003 Toyota Celica GT

Joined: Nov 2002
Posts: 199
Belgium
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?
Joined: Oct 2002
Posts: 673
XxMerlinxX
Senior Member
XxMerlinxX Dec 7, 9:48pm - #66089 
2000 Silver Toyota Celica
Senior Member
2000 Toyota Celica

Joined: Oct 2002
Posts: 673
Hartsville/Greenwood, SC
93 Octane from BP

[Linked Image]
Joined: Nov 2002
Posts: 199
CelicaTC
Member
CelicaTC Dec 7, 9:49pm - #66090 
Member
2003 Toyota Celica GT

Joined: Nov 2002
Posts: 199
Belgium
OK then, I leave this for someone else grin

Because 93 octane is good enough
Joined: Oct 2002
Posts: 673
XxMerlinxX
Senior Member
XxMerlinxX Dec 7, 9:58pm - #66091 
2000 Silver Toyota Celica
Senior Member
2000 Toyota Celica

Joined: Oct 2002
Posts: 673
Hartsville/Greenwood, SC
Think all I need is some octane booster?

[Linked Image]
Joined: Jul 2003
Posts: 19
racelicar
Member
racelicar Dec 7, 10:06pm - #66092 
1990 ice blue Toyota Celica GT
Member
1990 Toyota Celica GT

Joined: Jul 2003
Posts: 19
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.
Joined: Oct 2003
Posts: 92
shabu
Member
shabu Dec 8, 1:56am - #66093 
Member

Joined: Oct 2003
Posts: 92
What he said and reset your ecu
Joined: Apr 2003
Posts: 71
Michael Aristide
Member
Michael Aristide Dec 8, 5:00am - #66094 
Member

Joined: Apr 2003
Posts: 71
Miami/Daytona Beach
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.
Joined: May 2002
Posts: 3,295
Steven
ECelica Staff
Steven Dec 8, 5:54am - #66095 
2001 Spectra Blue Mica Toyota Celica GTS
ECelica Staff
2001 Toyota Celica GTS

Joined: May 2002
Posts: 3,295
Riverside, CA
Join the conversation - Register now or Sign in to add your comment


Moderated by  isaac 

Customize Your Toyota CelicaPrivacy Policy · About · Contact
CelicaHobby.com is an independent Toyota Celica enthusiast website. CelicaHobby.com is not sponsored by or affiliated with Toyota Motor Sales, USA, Inc. in any way. The Toyota and Celica names and logos are trademarks owned by Toyota Motor Sales, USA, Inc.
© CelicaHobby.com, 2001-2016