wlhequipment
Senior Member
Hi Folks,
I’m looking for a little help. I have an old Bobcat with a Perkins 4.154 CAV pump. Machine came to me not running. I just replaced injector nozzles, set em to 2200, checked compressions, leak downs, pump timing, and replaced all fluids and filters. My problem is the engine is running rough. A little smoke; when it runs for awhile, I have to open the doors or I’ll get fogged out. Not what I would call too much smoke. Oh compressions are all around 380 +\- 20-30 psi. I checked my pump timing, and the cover had been removed and the timing circlip had tool marks on it, but the timing seemed correct at 18BTDC. With a laser thermometer checking each exhaust flange, I get about 100 degree swing across all 4 cylinders, so they’re all firing (at least sort of). Fuel has also been drained and replaced. I’m really scratching my head here. That engine should be running fairly smooth, and it’s just not nearly as smooth as I think it should be. Any thoughts would be appreciated. Thanks!
I’m looking for a little help. I have an old Bobcat with a Perkins 4.154 CAV pump. Machine came to me not running. I just replaced injector nozzles, set em to 2200, checked compressions, leak downs, pump timing, and replaced all fluids and filters. My problem is the engine is running rough. A little smoke; when it runs for awhile, I have to open the doors or I’ll get fogged out. Not what I would call too much smoke. Oh compressions are all around 380 +\- 20-30 psi. I checked my pump timing, and the cover had been removed and the timing circlip had tool marks on it, but the timing seemed correct at 18BTDC. With a laser thermometer checking each exhaust flange, I get about 100 degree swing across all 4 cylinders, so they’re all firing (at least sort of). Fuel has also been drained and replaced. I’m really scratching my head here. That engine should be running fairly smooth, and it’s just not nearly as smooth as I think it should be. Any thoughts would be appreciated. Thanks!