BEAR_METAL
Registered User
Howdy y'all. So I accidentally turned my IDI into a fog machine...
She had a bad lift pump that I didn't catch until it started misfiring and dumping oil out the side of the crankcase, I replaced it with an electric pump (duralift ftw) and some good diesel rated fuel hose. Special thanks DesertBen44 for the writeup.
Anyway after replacing the lift pump she still ran pretty rough but I attributed it to the injection pump having to work too hard and getting worn out. SO I decided to replace the pump and injectors, ended up buying a reman pump from pensacola (I live in FL so figured quick shipping yada yada) and remanned injectors. Replaced everything over a weekend (what an absolute pain in the ass), and static timed it.
When bleeding the lines, it took probably a solid 5-7 minutes of cranking (not all at once obviously) to prime all of the lines with them cracked about 1/4 to 1/2 turn. Tightened everything down to spec, and turned her over. After cranking for about 10-15 seconds I heard a loud pop/bang after which I stopped cranking. Went to crank again, she took quite some time before she caught, and when she did, died immediately after. Started up again and it caught, ran but very rough, and the exhaust was white as snow. When revved, it would fill the entire area I was working in with a white fog. Definitely worse than before. Not one to give up easily, I played with the pump timing and found it made little difference, with the cold advance making no difference either. I settled on a little retarded (scribe line on pump is about 1/48" to the driver's side compared to the scribe line on the gear housing) but there really wasn't much difference when I had it advanced either.
The engine now very visibly shakes at idle (was previously at around 750rpm, now idles at around 500-600), and can be felt in the cab. The idle tensioner (replaced less than a month ago with the belt as well, definitely the right size belt as I could barely get it on) rocks back and forth at idle and when you turn the wheel the power steering pump will squeal like a stuck pig unless it's revved to 1500rpm. The engine stops shaking at 1500rpm and runs smooth as butter, but still sounds wrong. I can't hear the turbo spool either even if I take it out to 2500rpm and there is a very noticeable lack of power. Oh and after letting it get to operating temperature, the oil pressure drops to 0 at idle (according to the gauge), but picks right back up if you give it any gas (put it at 750rpm and it returns to normal).
I don't know if it's the pump/injectors I bought from pensacola, but I'm trying to rule out other things first. There's no oil in the coolant, and no bubbles in the radiator when it's at temperature. The oil has been changed within 300 miles, and the coolant is less than a month old (I do make sure to use SCA's).
She had a bad lift pump that I didn't catch until it started misfiring and dumping oil out the side of the crankcase, I replaced it with an electric pump (duralift ftw) and some good diesel rated fuel hose. Special thanks DesertBen44 for the writeup.
Anyway after replacing the lift pump she still ran pretty rough but I attributed it to the injection pump having to work too hard and getting worn out. SO I decided to replace the pump and injectors, ended up buying a reman pump from pensacola (I live in FL so figured quick shipping yada yada) and remanned injectors. Replaced everything over a weekend (what an absolute pain in the ass), and static timed it.
When bleeding the lines, it took probably a solid 5-7 minutes of cranking (not all at once obviously) to prime all of the lines with them cracked about 1/4 to 1/2 turn. Tightened everything down to spec, and turned her over. After cranking for about 10-15 seconds I heard a loud pop/bang after which I stopped cranking. Went to crank again, she took quite some time before she caught, and when she did, died immediately after. Started up again and it caught, ran but very rough, and the exhaust was white as snow. When revved, it would fill the entire area I was working in with a white fog. Definitely worse than before. Not one to give up easily, I played with the pump timing and found it made little difference, with the cold advance making no difference either. I settled on a little retarded (scribe line on pump is about 1/48" to the driver's side compared to the scribe line on the gear housing) but there really wasn't much difference when I had it advanced either.
The engine now very visibly shakes at idle (was previously at around 750rpm, now idles at around 500-600), and can be felt in the cab. The idle tensioner (replaced less than a month ago with the belt as well, definitely the right size belt as I could barely get it on) rocks back and forth at idle and when you turn the wheel the power steering pump will squeal like a stuck pig unless it's revved to 1500rpm. The engine stops shaking at 1500rpm and runs smooth as butter, but still sounds wrong. I can't hear the turbo spool either even if I take it out to 2500rpm and there is a very noticeable lack of power. Oh and after letting it get to operating temperature, the oil pressure drops to 0 at idle (according to the gauge), but picks right back up if you give it any gas (put it at 750rpm and it returns to normal).
I don't know if it's the pump/injectors I bought from pensacola, but I'm trying to rule out other things first. There's no oil in the coolant, and no bubbles in the radiator when it's at temperature. The oil has been changed within 300 miles, and the coolant is less than a month old (I do make sure to use SCA's).