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Missfire cylinder 1 p0301


Y23DRH

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So the zed had the engine light come on had code read p0301 come up

 

Replaced all spark plugs Still the same :/

Every coil pack replaced still the same :/

All imjectors injectors and still have a misfire on number one cylinder :/

 

The cars also had service all items changed etc running out of ideas now any one ???

 

Suggestions welcome :)

 

Its 2005 350z gt roadster

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Have you done any engine mods without a remap?

 

Nope had all mods done and had it remaped

 

But i do have a new maf sensor tho but cant see that being the culprut as was there before that was fitted :/

 

My mechanic is doing a compresssion test tonight will update once i have the results from it :/

Edited by F4ABP
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Cars fixed several hours later took out plugs and coils and did compression test

 

6th 160

4th 155

2nd 165

 

5th 150

3rd 150

1st 160

 

Compression test results. Not sire if low or not tho ??

 

Cleaned every thing up re read the codes and cleared them put it all back together

 

Fired up spot on no misfire at all no eml light and no codes showing drives perfect and is alot quicker now the eml light is off big thanks to every one for there advice :)

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