If you have a 9th Gen. Civic with the R18 engine, just a warning:
1. Check the small intake hose that sits between the throttle body and air cleaner for cracks between the bellows.
2. Check the lower torque mount (it bolts to the engine right next to the oil drain plug) to see if it's torn.
Actually if you have any Civic you should check these parts, especially the torque mount since those wear over time, but on the 9th Gen. Civic apparently it's common for both of these to fail, you'll find lots of videos about these on YouTube. Ours is a 2015 with pretty low mileage ~60K miles and I had to replace both. I first noticed the torn torque mount when I was under doing an oil change, there were bits of shredded rubber under the torque mount in the little mouth it sits in on the subframe, when I tugged on the exhaust pipe the lower portion of the engine moved excessively. When I removed it for replacement the metal sleeve in the center of the rubber bushing was completely detached from the rest of the mount.
The intake hose had cracked open in two places: one crack was visible from the front just by spreading the bellows and was right by the air cleaner, the other crack was on the rear right by the throttle body (the two cracks were roughly diagonal from each other), the rear crack is impossible to see without a mirror because the throttle body is recessed into the engine bay. Both cracks were about two inches long but somehow never caused a lean code, possibly because they were on the inner fold of the bellows and maybe sealed without engine movement or something, maybe only opening during WOT at which point a vacuum leak isn't as big of a deal.
The car idled like crap, vibrated, it would jerk on acceleration and when shifting between drive and reverse, I replaced both parts and the air filter with OE parts, cleaned the MAF sensor, and the car feels like new.
1. Check the small intake hose that sits between the throttle body and air cleaner for cracks between the bellows.
2. Check the lower torque mount (it bolts to the engine right next to the oil drain plug) to see if it's torn.
Actually if you have any Civic you should check these parts, especially the torque mount since those wear over time, but on the 9th Gen. Civic apparently it's common for both of these to fail, you'll find lots of videos about these on YouTube. Ours is a 2015 with pretty low mileage ~60K miles and I had to replace both. I first noticed the torn torque mount when I was under doing an oil change, there were bits of shredded rubber under the torque mount in the little mouth it sits in on the subframe, when I tugged on the exhaust pipe the lower portion of the engine moved excessively. When I removed it for replacement the metal sleeve in the center of the rubber bushing was completely detached from the rest of the mount.
The intake hose had cracked open in two places: one crack was visible from the front just by spreading the bellows and was right by the air cleaner, the other crack was on the rear right by the throttle body (the two cracks were roughly diagonal from each other), the rear crack is impossible to see without a mirror because the throttle body is recessed into the engine bay. Both cracks were about two inches long but somehow never caused a lean code, possibly because they were on the inner fold of the bellows and maybe sealed without engine movement or something, maybe only opening during WOT at which point a vacuum leak isn't as big of a deal.
The car idled like crap, vibrated, it would jerk on acceleration and when shifting between drive and reverse, I replaced both parts and the air filter with OE parts, cleaned the MAF sensor, and the car feels like new.
