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- CX7 2007 Sports
Hi there! P0303 (misfire cylinder 3) just popped up after 121,000 miles on my 2007 CX-7 (i.e. turbo). Very unfortunate since it was running so nice lately.
Anything different lately? Well, new gas tank 30 miles prior (doubt that is the problem), and 2 tanks ago I put a can of gumout in the gas tank to clean out the engine.
Already changed all spark plugs and the coil for cylinder 3. P0303 remains. Did a compression test and cylinder 3 scores only half pressure readings compared to the other 3 cylinders.
I'd love to hear your advice on what would cause this, and suggested remedies along with qualitative costs to address. Is this an engine removal job at >$2K job? Would you try something else first? Thanks much!
Anything different lately? Well, new gas tank 30 miles prior (doubt that is the problem), and 2 tanks ago I put a can of gumout in the gas tank to clean out the engine.
Already changed all spark plugs and the coil for cylinder 3. P0303 remains. Did a compression test and cylinder 3 scores only half pressure readings compared to the other 3 cylinders.
I'd love to hear your advice on what would cause this, and suggested remedies along with qualitative costs to address. Is this an engine removal job at >$2K job? Would you try something else first? Thanks much!