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Vent: Spent 2 hours chasing a misfire that turned out to be a $6 vacuum cap
Customer brought in a 2012 Honda Accord with a rough idle and a P0301 code. I swapped plugs, coils, even ran a compression test, nothing fixed it. Finally noticed a tiny crack in the vacuum cap on the intake manifold, the one nobody thinks to check. Put a new cap on and it ran smooth as butter. Has anyone else wasted half a day on a part that costs less than their lunch?
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zara_hill4624d agoMost Upvoted
Oh man, tell me about it. I did almost the exact same thing on my old Civic last year, spent a whole Saturday swapping out ignition components and cleaning the throttle body, only to find a dried up little vacuum cap that looked fine but had a hairline crack you could only see if you bent it. I was so mad at myself because I even had a pack of those caps in my toolbox, I just never thought to check that spot since it was tucked under a hose. It's always the dumb little things that get you, you know? I swear Honda engineers put those caps in the most annoying places on purpose just to mess with us. But hey, at least your car is running good now and you learned a lesson I've had to learn like three times already.
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rosek4424d ago
Why would you chase a misfire for 2 hours when a $6 part is the first thing to check on a Honda?
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