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Wolfgang
Wolfgang, Master Auto Tech
Category: Car
Satisfied Customers: 4215
Experience:  Master, L1, L2, ASE 15yrs and running.
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Check engine light..intermitten..Code is for cylinder 5 missfire

Resolved Question:

have a 07 h3. Check engine light is intermitten. Code is for cylinder 5 missfire. changed plugs and after about 150 miles the light came back on. and suggestions.
Submitted: 6 years ago.
Category: Car
Expert:  Wolfgang replied 6 years ago.

there is a good possibility that either u have carbon on the valves causing intermittent misfire

 

fuel injector spray not consistent and not atomizing the fuel

 

or a coil that is cabon tracked and causing the misfire!!

 

i would do the cheapest and easiest thing change the coil first and see what happens

 

make sure that u line up the boot correctly on the plug when changing!!

 

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