2009 Honda Civic Hybrid low engine pressure

WILL HUGHES

MEMBER
2009 HONDA CIVIC HYBRID
2.0L
4 CYL
FWD
AUTOMATIC
90,000 MILES

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.

3 Replies

HOMER1967

MECHANIC
875 POSTS

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?

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Sunday, November 29th, 2015 AT 2:36 PM

WILL HUGHES

MEMBER
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.