2009 Honda Civic Hybrid low engine pressure

2009 HONDA CIVIC HYBRID
90,000 MILES • 2.0L • 4 CYL • FWD • AUTOMATIC
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WILL HUGHES
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My car seems to not have full compression, I think it's called. It doesn't sound like a hole in the muffler but it accelerates and decelerates with a sound kind like that, where you can hear the pistons firing, like a wah-wah-wah sound (not solid sounding as it once did). Is a spark plug bad or something like that or might I have a cracked gasket? Sorry, not very handy, if this sounds dumb.
Nov 29, 2015 at 11:15 AM
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HOMER1967
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It's ok.how does the car run? does it have power? any check engine light on? it it using more fuel than it used to?
Nov 29, 2015 at 2:36 PM
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WILL HUGHES
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  • 2 POSTS
Thanks. No engine lights and the MPG is about 44, highway. Not much different from when I bought it. It sounds more like an air gap or something, like the fuel isn't exploding efficiently, despite the decent gas mileage. The sound is probably combustion related, I assume, given the acceleration/deceleration connection.
Nov 29, 2015 at 2:59 PM
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HOMER1967
  • ✓ASE Certified Mechanic
  • 875 POSTS
  • ASE Certified Mechanic
I would suspect an exhaust leak,specifically around the flex pipe.
Nov 29, 2015 at 3:09 PM
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