Fuel Injector Setting spring pressure

[LouNY]

I would recommend sending the injectors out, it is the easy way out.
That said I know people that have used their porta powers by adding a pressure gauge and filling with diesel fuel,
but looking at that price of the pump and gauge setup radios1 posted I wouldn't bother messing with a porta power.

 

[mllud]

I appreciate your opinion but this injector is not available as a unit and l lot of the parts aren't available accept used. All I called say the rebuild pumps but want to work with only new injectors.
By flexing out a fuel line I'm able to watch the spray pattern. They can't change the point of it opening. That's determined by spring pressure and pump timing giving a shot of fuel. The lucas pump is cam driven pump timing so to adjust timing on one injector will change all three.
All the shop can do is adjust by visual spray pattern. Visual not technical.
I don't want to wash out my cylinders but with these injectors it either wont run or there will be a visual problems with the exhaust like excessive smoke. Too little fuel and it won't run.
I did call and they specialize in rebuilding pumps and want to start with new injectors. I understand their point because a used injector could make their pump rebuild look bad.
The only parts I found was new nozzles and a sealing washer set. All they could do is adjust to what they consider a good visual spray pattern. I have enough experience to go back and forth with the spray pattern until its atomizing a good spray I'm using my injector pump to adjust the spray pattern. This is 1962 technology.
I was able today to flex one injector line back far enough to use that line to adjust all three injector spray patterns. Plus i'm adjusting to my pump which will be more accurate.

The penny's an dollar thing doesn't apply with me. I'm new to the forum but not a rookie. I was looking for an answer that I knew wasn't really out there. I fell flat on google
As I said I'm 64 and never paid a mechanic. Iv never done anything that screwed up an engine. A diesel exhaust pipe says a lot if you know what your looking at.

 

[radios1]

complete fuel injectors. Massey Ferguson 203 Fuel Injector - 734596M91

 

[mllud]

Radios
I would like to get one of those test pumps.
I have been looking for one of those test tables that shops use. I like working on those Lucas injection pumps. Its not heavy work and rebuilding them could maybe make a few bucks.

 

[mllud]

complete fuel injectors. Massey Ferguson 203 Fuel Injector - 734596M91

Radios
That would he a bargain. Mine are pictured in post #1. They are huge. I would have to see in the seat and nozzle are the same. I would also need a new return line. its on top with those advertised. I think that's a later version. I tried getting interchange information before but didn't get any answers.
They look all wrong. don't have my serial plate. I misplaced it. it will show up

 

[Agvg]

Find it strange that a serious tractor workshop don't have a simple nozzle tester, checking injectors is quite common on older equipment. Should not be more than a hour to do test and adjustment, no MF dealers in the area?

 

[mllud]

Find it strange that a serious tractor workshop don't have a simple nozzle tester, checking injectors is quite common on older equipment. Should not be more than a hour to do test and adjustment, no MF dealers in the area?

If they did ,with a labor rate of $ 120 an hour it would be more beneficial to buy a simple nozzle tester for future use. Things may be different in other country's or in around the cities here but out here if you have an old tractor you work on it. In my first post I was looking for an initial setting. and there isn't one. I now have one injector line on the tractor that has enough flex to allow me to invert the injector and make adjustments to set up the injectors watching the spray pattern. I found that starting point I needed yesterday. I didn't have much time yesterday because of family visiting.
I will get them adjusted. I have never seen a Massey Ferguson dealer in my area. I googled on a dealer finder and got one in Kansas city on the other side of the state. A local N.H. dealer sells parts but has to order them. I can order the same parts online without paying his markup. There are a lot of parts on a i962 203 that are not available new.
A lot of the dealer websites wont even let you look on their website unless you agree to let them load their cookies. Then they can spam you to no end. I click the back arrow. leaches

 

[thepumpguysc]

U can take them in.. or go thru the top w/ a caliper & measure the distance from the adjuster to the top of the lock nut..
BUT if you've monkyed w/ all of them, its to late.
I know what your trying to do w/ "getting the spray pattern".. but let me say this & u can take it for what its worth..
You can have a GOOD spray pattern at 100 rpm & u can have a good spray pattern at 2000 rpm.. it doesnt mean your setting the PRESSURE correctly..
& THATS what u need a "pop tester" for.. to SET the OPENING PRESSURE..
& once u set the OP, THEN u check for spray pattern, chatter & leakage..
Spray pattern means nothing if the OP is incorrect..
But if that method works for you..I say go for it..
BTW> I test injectors for free.. & quite frankly, any decent fuel shop would..

 

[aczlan]

A lot of the dealer websites wont even let you look on their website unless you agree to let them load their cookies. Then they can spam you to no end. I click the back arrow. leaches

Ummm, browser cookies don't let them spam you and pretty much every modern browser has a "private mode" that gets rid of all of the cookies when you close the browsing session.

Aaron Z

 

[mllud]

U can take them in.. or go thru the top w/ a caliper & measure the distance from the adjuster to the top of the lock nut..
BUT if you've monkyed w/ all of them, its to late.
I know what your trying to do w/ "getting the spray pattern".. but let me say this & u can take it for what its worth..
You can have a GOOD spray pattern at 100 rpm & u can have a good spray pattern at 2000 rpm.. it doesnt mean your setting the PRESSURE correctly..
& THATS what u need a "pop tester" for.. to SET the OPENING PRESSURE..
& once u set the OP, THEN u check for spray pattern, chatter & leakage..
Spray pattern means nothing if the OP is incorrect..
But if that method works for you..I say go for it..
BTW> I test injectors for free.. & quite frankly, any decent fuel shop would..

pumpguy

That's some goods information. I'm sure cranking with the starter is closer to 100 rpm's than 2000. All three were disassembled before I realized I had lost the adjustment so taking a measurement wont work. I do see what you are saying. It seems that it would have to have a good spray pattern at cranking speed to start. I can see how it could want to chatter on the compression stroke if set with to light spring pressure. Ill look online at a pop tester. I seen in another thread you said the opening pressure is 22-2500 psi. That's what I need. I have a fluid filled high pressure gauge and a pump that is air over hydraulic on a car scissor lift that I would have good pressure control. Getting the fitting adapted to hook it up could be a problem. Those pop testers have the fittings. Ill either look at ordering a pop tester or try the local tractor shop again. Ill walk in instead of calling.
Thanks ,That information helps
It has a poor battery that doesn't crank well. I'm going to use my skid steer battery when I get them set. I will get them set at 22-2500 psi.
My skid steer wasn't starting well until I bought the new battery. Taxes and Christmas coming up has my money strapped right now.

Pumpguy, Is the fitting on the injector a standard fitting that I could buy? The ferrel is round. I think not standard. If I had an old line I could braze up an adaptor

Aaron Z
I have my internet options set to delete after leaving but every place I visit I get adds pertaining to what they sell or what I looked at. I'm not sure how to stop it.