I have a Canadian Civic with a swapped B18. The car was running fine about a month ago and I pulled the motor out to paint the bay. I dropped the motor back in same as it was and now when I get up to high rpms or hit medium bumps, the engine light flickers and it feels like the motor dies for like 1/2 of a second, the whole car jerks and then the car just goes right back to normal and keeps driving. Any ideas or thoughts on what it might be?