check engine light po302

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juli2295

Member

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mazda protege es 2002

• Apr 19, 2014

• #1

hey guys, yesterday I got a check engine light, I put the scanner and it gave me a code (po302), its a cylinder 2 misfire, I changed the coils, and now my car doesn't start, please helppp

 

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hornsfan10609

Certified Mazda Tech

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2003.5 Mazdaspeed Protege x2

• Apr 21, 2014

• #2

Check your battery terminals and fuses/relays. Make sure the coilpacks are plugged into the harness and the wires are seated. Does it crank at all?

 

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Schwamm

Member

:

2003 Mazdaspeed Protege, 2008 Mazda 3 Hatchback, 1984 RX7 GSL-SE

• May 27, 2014

• #3

Did you get this issue sorted out? I have a P0303 (cylinder 3 misfire) and it's not caused by anything ignition related. I already tried different coil packs, wires, and plugs. I have yet to fix it

 

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xExoticC

Member

:

Mazdaspeed Protege

• Jul 15, 2014

• #4

juli2295 said:

hey guys, yesterday I got a check engine light, I put the scanner and it gave me a code (po302), its a cylinder 2 misfire, I changed the coils, and now my car doesn't start, please helppp

Click to expand...

I previously had a p0302 code I thought it was my coil pack, but when I looked at my spark plug it was just the gapping on the actual plug.

 

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thelimkid

Member

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Mazdaspeed Protege

• Jul 18, 2014

• #5

I'm having the same problem. Did the same thing. Still had the same error code and car idles like crap. Heard it also might be a bad fuel injector. I'm going to find a used injector at the junk yard tomorrow and see if that resolves the issue.

 

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hornsfan10609

Certified Mazda Tech

:

2003.5 Mazdaspeed Protege x2

• Jul 18, 2014

• #6

Did you replace the plugs? Are they gapped to .028"?

 

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IllaNoizeTV

Member

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2003 Mazdaspeed Protege

• Aug 29, 2014

• #7

Mine has the same problem. The OEM NGK spark plugs are pregapped incorrectly. Here is the thread with all the info. This is essential to a working MSP.

http://www.mazdas247.com/forum/showthread.php?123837608-**CORRECT**-MSP-spark-plug-list

 

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hornsfan10609

Certified Mazda Tech

:

2003.5 Mazdaspeed Protege x2

• Aug 29, 2014

• #8

Actually the OEM platinum plugs are gapped correctly, the replacement copper plugs you get at the store must be re-gapped bc autoparts stores don't stock the smaller gap plugs for whatever reason (lack of demand is my guess).