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#109728 Feb 23, 10:05am
Joined: Jan 2004
Posts: 698
Senior Member
00 Toyota Celica
Senior Member
00 Toyota Celica
Joined: Jan 2004
Posts: 698
My check engine light went on and its codes 300 and 304, which is multiple misfires and #4 cylinder misfire. cry. What do you think may have caused this and what could I do to correct the problem, you think I should get new sprak plugs. By the way 00GTS6SPD

Joined: Jan 2004
Posts: 698
Senior Member
00 Toyota Celica
Senior Member
00 Toyota Celica
Joined: Jan 2004
Posts: 698
Anyone???

Joined: May 2003
Posts: 5,342
dikitzaps
1974 Toyota Celica
dikitzaps
1974 Toyota Celica
Joined: May 2003
Posts: 5,342
sparkplugs -- check them and if they're messed up replace them and make sure they are properly gapped.

Joined: May 2002
Posts: 5,979
Likes: 9
ECelica Admin
2001 Toyota Celica GT
ECelica Admin
2001 Toyota Celica GT
Joined: May 2002
Posts: 5,979
Likes: 9
You will find exactly what you are looking for here...
https://celicahobby.com/gal3/tech_ShopMan1?page=5

(use the FIRST index image on page gallery 5 - the link i posted)

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It's not just your imagination...
Your day really does go by twice as fast while on EverythingCelica.com

Joined: May 2003
Posts: 5,342
dikitzaps
1974 Toyota Celica
dikitzaps
1974 Toyota Celica
Joined: May 2003
Posts: 5,342
P0300 Random/Multiple Cylinder Misfire Detected

P0304 Cylinder 4 Misfire Detected

check your plug for your fourth cylender

Joined: May 2002
Posts: 5,979
Likes: 9
ECelica Admin
2001 Toyota Celica GT
ECelica Admin
2001 Toyota Celica GT
Joined: May 2002
Posts: 5,979
Likes: 9
Here is the exact solution to your problems...


go here and keep scorlling to the right - this is the detail page with how to diagnos/correct your celi's reported problem

https://celicahobby.com/gal3/tech_ShopMan1/celicashopmanual1_Page_266


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Your day really does go by twice as fast while on EverythingCelica.com
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01 Toyota Celica
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