Transplanted a 3B non-turbo with H55F in to an old gasser FJ60. Used a Racor seperator mounted on the firewall. Put over 1500 kms on the conversion and no problems at all. The other day, pulled down a steep driveway. Truck was fine going downhill front ways, then reversed backwards out of driveway and truck cut off 3 times before I got to the top. After I was back on the road truck ran fine. Had a Full tank of diesel, and lines did not loose prime as far as i can tell. Any clue??? Thanks.