OP
AlbionWood
Silver Member
I don't understand. Do you mean pumping into the fuel filter assembly instead of gravity flowing from the fuel tank?
Injector problem or something else?
- Thread starter AlbionWood
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Fuel jug to new electric pump directly to the supply to injection pump. If the problem still happens I would change injectors and check compression. If new Injectors and compression is good your prob looking at a high pressure pump if your pump timing isnt off.
OP
AlbionWood
Silver Member
I hope it's not the fuel pump, that's a pretty big job and getting the timing adjusted right looks pretty tricky. I'll work on the fuel supply end first, then the injectors, and if neither of those fixes it, I guess the fuel pump is the next suspect.
OP
AlbionWood
Silver Member
Having trouble finding new injectors that match the old ones in this engine. Lots of places offering injectors for Shibaura N844 but none of them have leak-off lines and they are apparently for engines made after 1999; mine was 1992. I finally found a part number, at Messick's, but they want $356 for one!! Searching by part number is turning up only a few hits and most of those don't have photos, so I can't tell if they really are the correct style. At least one place had the right part number but what is shown is the wrong injector.
Looks like I'm just going to have to pay up for these if it turns out that's what I need. Maybe for $1,400+ I will try cleaning the old ones.
Looks like I'm just going to have to pay up for these if it turns out that's what I need. Maybe for $1,400+ I will try cleaning the old ones.
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thepumpguysc
Elite Member
How about sending them to me for testing and rebuild if needed.??
BEFORE you do damage..
BEFORE you do damage..
mrmikey
Veteran Member
What he says, you're working with minute tolerances, you can't take 'em apart, give 'em a rub with some sandpaper and hope the work. Send them to The Pump Guy you can't go wrong, haven't heard one negative thing about him.
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California
Super Star Member
- Joined
- Jan 22, 2004
- Messages
- 14,911
- Location
- An hour north of San Francisco
- Tractor
- Yanmar YM240 Yanmar YM186D
It runs fine on Seafoam? Before you take anything apart please read my recent thread. Bad fuel!
I see you are 2 hours north of me. Your fuel may come from the same source.
Major problem? No, just bad fuel
Bad fuel recently gave me a nightmare of bad performance. This Yanmar YM186D is from early 1980's so after 45 years anything seems possible. But today I put in fresh diesel and to my relief, this solved the problem. It purrs again. Last weekend I mowed, and spent some time grading the lane...
www.tractorbynet.com
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OP
AlbionWood
Silver Member
Yeah I did see that thread when I first started working on this. Drained the fuel tank, changed fuel filter and O-ring, refilled with fresh diesel, added Seafoam. No observable effect.It runs fine on Seafoam? Before you take anything apart please read my recent thread. Bad fuel!
I see you are 2 hours north of me. Your fuel may come from the same source.
Major problem? No, just bad fuel
Bad fuel recently gave me a nightmare of bad performance. This Yanmar YM186D is from early 1980's so after 45 years anything seems possible. But today I put in fresh diesel and to my relief, this solved the problem. It purrs again. Last weekend I mowed, and spent some time grading the lane...www.tractorbynet.com
OP
AlbionWood
Silver Member
Got the injectors out today and will send them out to be serviced. They look pretty bad, lots of carbon, I'm surprised it ran at all.
OP
AlbionWood
Silver Member
Well, shoot. Got the rebuilt injectors back and installed, put everything back together, bled the pressure lines and started the tractor up. As always it started right up, I ran it for a while and revved it up, and it started missing again. So there's something else wrong.