P0351 2009 Corolla

I think I solved the problem. My wife and I both had smelled unburned fuel more than once. I thought the misfire was causing the unburned fuel. But I smelled unburned fuel even without a misfire. So I ordered up some fuel injectors and replaced them. So far so good. The injector on #1 must have been leaking, during start up there was too much fuel and it caused a misfire. (that’s my story and I’m sticking with it :wink: )

Now on to the injector saga. I ordered them off of a popular web site many of us use. I picked the part because all the o rings were included. I installed them and the engine started up nicely, however when I looked at them I had gas spewing all over. Took it apart, checked for dirt mis alignment etc and re seated them. Started the car up and had gas spewing all over again. At this point I am thinking I could have had my local shop do it, more money but less aggravation -but that is another post. I took it apart and checked to make sure the right injectors were sent, I have had incorrect parts shipped before. When I held the new to old they were the same except for the o ring on the top-input side. The original were red and tight, the new ones were brown and loose, loose to the point they had deformed a bit, rolled out of their slot. There was no way they could hold a seal. I could have messed up one o-ring but not all 4. I swapped o rings reinstalled and no more leaking gas. The old red o rings were snug in the slot.
The top of my engine is nice and clean now. And so far no more misfires on start up.

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