1850 fuel problems

[farmersamm]

Got sort of a stumper here........................

The injection pump used to leak like crazy at the governor adj cover, and other places. Ran fine though. Fuel runs down the right side of the engine LOL.

Today the motor started to mildly run away at times. Usually when making a hard turn, or hitting a big bump in the field..............

AND.......the pump no longer leaks at ALL. Dry as a bone on the outside.

I'm gonna pick up a new final filter this evening, and see if it's partially plugged. The water separator drains freely, so I don't believe that it's the problem.

This thing has a lift pump on it, although I don't know why........the tank is above the injector pump, and all lines/filters. I'm not sure what the symptoms of a bad lift pump might be. I'm assuming they won't run without the thing working??????

And...............another GD sign of getting old........... I forgot to put lubricity additive in the damn thing this morning, and it's been run hard for about 3 1/2 hours. The problem didn't start till later in the day. I should note....I may have forgotten to put the additive in the last few gallons I added prior to this morning. So, it might have been run for a while without it.

This is the CAV pump I'm assuming that all of the Perkins motors have.

 

[rrlund]

You say you have fuel running down the right side of the engine? Is it spraying up against the tank and raining down or something? The injector pump is on the left. What's with the lubricity additive? I've never heard of it, never used it. If it stopped leaking three and a half hours after you forgot to put it in, I don't think I'd want to use it.

All that said, my 2-105 was leaking so bad that fuel would drip hard and steady any time it was running, but it was coming from the seam where that smaller round part that the lines bolt on, goes down inside the the larger round part of the pump. I guess there's an o ring in there. My 1850 leaks around the throttle shaft until it gets warmed up good, then it stops.

 

[farmersamm]

You say you have fuel running down the right side of the engine? Is it spraying up against the tank and raining down or something? The injector pump is on the left. What's with the lubricity additive? I've never heard of it, never used it. If it stopped leaking three and a half hours after you forgot to put it in, I don't think I'd want to use it.

All that said, my 2-105 was leaking so bad that fuel would drip hard and steady any time it was running, but it was coming from the seam where that smaller round part that the lines bolt on, goes down inside the the larger round part of the pump. I guess there's an o ring in there. My 1850 leaks around the throttle shaft until it gets warmed up good, then it stops.

LEFT SIDE my bad. Anyways, this doesn't solve the engine racing problem. It has to be a fuel problem.

Or........I can't stand it if it is..............I'm looking at an engine ready to seize up. This would be the icing on the cake.

 

[rrlund]

LEFT SIDE my bad. Anyways, this doesn't solve the engine racing problem. It has to be a fuel problem.

Or........I can't stand it if it is..............I'm looking at an engine ready to seize up. This would be the icing on the cake.

Ya, I get it. My 1600 gas reved way up because of the governor bearing back around New Years. It was full of oil and still locked right up on me.

 

[Dieseltech]

That fuel system is designed to have a lift pump on it.

 

[farmersamm]

Ya, I get it. My 1600 gas reved way up because of the governor bearing back around New Years. It was full of oil and still locked right up on me.

Had one engine fully seize..........................engine raced intermittently, with large amt of black smoke. When I got to the front gate, and dropped down to idle..........it seized. The governor was trying to keep it running as the bearings got hot, and friction increased......finally it locked up.

Another engine, same model, and vintage, tractor..........same same. Although this time around, I shut it down before it seized. Racing engine intermittently......no power.

The Oliver still has plenty of power, but the intermittent racing is scarily very similar to the other two engines.

Oil pressure is staying at around 50psi when hot. Water temp is staying in the normal range.

The leaking injector pump is what's so doggone different. It's been leaking for years............until today. Fuel from 2 different vendors. Earlier vendor had lubricity additive in the tank at the fuel yard. The outfit I'm using now doesn't know if there is any lubricity additive, so I'm playing safe, and adding Howe. Although, I've read that dyed diesel, by law, has to have 500ppm sulfur content. Which means it's retained a lot of its lubricity. ULSD is so fully refined that a lot of the lubricity is lost...............dyed diesel is supposed to be LS diesel. (shrug)

I'm not sure which is the low pressure side of the pump. And.......if there's insufficient pressure at the low side, might that be the reason it's quit leaking............and possibly contributing to a intermittent lean problem. And if there is low pressure, would it be due to the lift pump, or a clogged primary filter. ALTHOUGH FUEL STARVATION GENERALLY CAUSES EXTREME LOSS OF POWER..........WHICH ISN'T HAPPENING HERE.

There are, as far as I know, no manuals available for the CAV pump. I've seen some data in MOTOR's truck and tractor repair, including settings. But there seems to have been a black curtain drawn over info for these pumps. It's either a CYA on the part of the manufacturer, or a NO right to repair scenario. I hate to take the pump in, and pay $1100 to have it checked........................and that was the quoted price years ago.

 

[Dieseltech]

Had one engine fully seize..........................engine raced intermittently, with large amt of black smoke. When I got to the front gate, and dropped down to idle..........it seized. The governor was trying to keep it running as the bearings got hot, and friction increased......finally it locked up.

Another engine, same model, and vintage, tractor..........same same. Although this time around, I shut it down before it seized. Racing engine intermittently......no power.

The Oliver still has plenty of power, but the intermittent racing is scarily very similar to the other two engines.

Oil pressure is staying at around 50psi when hot. Water temp is staying in the normal range.

The leaking injector pump is what's so doggone different. It's been leaking for years............until today. Fuel from 2 different vendors. Earlier vendor had lubricity additive in the tank at the fuel yard. The outfit I'm using now doesn't know if there is any lubricity additive, so I'm playing safe, and adding Howe. Although, I've read that dyed diesel, by law, has to have 500ppm sulfur content. Which means it's retained a lot of its lubricity. ULSD is so fully refined that a lot of the lubricity is lost...............dyed diesel is supposed to be LS diesel. (shrug)

I'm not sure which is the low pressure side of the pump. And.......if there's insufficient pressure at the low side, might that be the reason it's quit leaking............and possibly contributing to a intermittent lean problem. And if there is low pressure, would it be due to the lift pump, or a clogged primary filter. ALTHOUGH FUEL STARVATION GENERALLY CAUSES EXTREME LOSS OF POWER..........WHICH ISN'T HAPPENING HERE.

There are, as far as I know, no manuals available for the CAV pump. I've seen some data in MOTOR's truck and tractor repair, including settings. But there seems to have been a black curtain drawn over info for these pumps. It's either a CYA on the part of the manufacturer, or a NO right to repair scenario. I hate to take the pump in, and pay $1100 to have it checked........................and that was the quoted price years ago.

The Perkins three, four and six cylinder engines in MF tractors with the CAV DPA pumps all have a 5 PSI feed pump to supply the filters and BOTH INLET AND OUTLET of the injection pump. All also have a CONSTANT BLEED orifice fitting on the final filter to bleed off ANY trapped air from the base BEFORE it can get into injection pump inlet. When that orifice plugs it WILL cause engine shutdown when the air bubble gets into the injection pump. CAV DPA pumps all have the return at the drive end of pump. Most I can repair and calibrate for under 500 IF the head and cam ring are good.

 

[MikeO-WI]

My 2-105 White had a similar leak where fuel was running down the left side. Took it off for a rebuild and found they had to replace the head also. In the process of putting it back together. One of the easier injector pumps to and reinstall that i have seen.

 

[farmersamm]

Put the Howes magic schmooo in this morning, and it ran fine. Wondering if there's something worn in the governor that needs the extra lubricant to function properly. Probably like the rest of the tractor.........everything is on the point of wearing out. 60yrs is a long time.

 

[rrlund]

Put the Howes magic schmooo in this morning, and it ran fine. Wondering if there's something worn in the governor that needs the extra lubricant to function properly. Probably like the rest of the tractor.........everything is on the point of wearing out. 60yrs is a long time.

Sounds like an oil furnace I used to have. The only way it would ignite was if I used Cen-Pa-Co Motor Cleanse in it.

 

[GermantownGreen]

Sounds like an oil furnace I used to have. The only way it would ignite was if I used Cen-Pa-Co Motor Cleanse in it.

We use their gas and diesel additive Cen Pe Co...
in all of our fuels, it has kept all of these Oliver's going here....
GG Wes

Fyi they are out of Ohio but have dealers that deliver on a semi annual schedule. Our dealer is in N east Central Missouri, he's awesome to us.
Very worthwhile to use the stuff.