Two things that you did not mention. Is the vent on fuel tank clean. Are there any hoses used in the fuel system that could be collapsing.
I have had a similar situation with a Detroit Diesel. Ran cold then lost power to run well after fully warmed up. A bit different fuel system, but a new pump made it better. The DD pump was cheap, so a no brainer to change. This Cat pump will be vastly more I sure don't want to tell you it will fix things. My guess is the warn DD pump had parts that warmed up at different amounts of time.
Two things that you did not mention. Is the vent on fuel tank clean. Are there any hoses used in the fuel system that could be collapsing.
I have had a similar situation with a Detroit Diesel. Ran cold then lost power to run well after fully warmed up. A bit different fuel system, but a new pump made it better. The DD pump was cheap, so a no brainer to change. This Cat pump will be vastly more I sure don't want to tell you it will fix things. My guess is the warn DD pump had parts that warmed up at different amounts of time.
To start with the injection capsules do have a breaking pressure, a rather wide range of 300 to 800 psi with replacement required if they can't make 300 psi.
The filter element is a 9M5451.
What are you getting for fuel pressure? Using a real gauge.
[quote="Old Magnet post=259410 userid=632"]To start with the injection capsules do have a breaking pressure, a rather wide range of 300 to 800 psi with replacement required if they can't make 300 psi.
The filter element is a 9M5451.[/quote]
[quote]What are you getting for fuel pressure? Using a real gauge.[/quote]
[quote] [/quote]
Scratching my head on the break pressure, I too thought it was odd they wouldn't have so either the either the shop didnt actually test when they said they did or they just tested the bodies? I just scrounged up a old Bosch injector tester (bosch 0681200502) and hooked one up and it looks like it wants to build pressure in the nozzle itself. It also looks like i need a fixture or to pull a prechamber to hold the nozzle against the body tight enough to hold pressure to actually test? Pulling the prechambers is a bit more involved than I was hoping.
As for what fuel pressure am I getting, do you mean between lift pump and injection pump or coming out of injection pump when machine is running with injectors installed?
As for the filter element, thats the PN in my parts book but Cat is showing no results for that PN and i can't find online anywhere. Does it have a threaded stem that screw in to a blind hole above or just held in by bowl bottom?
I was referring to lift pump pressure check.
The proper test apparatus has a holder for checking capsule pressure.
Check here for filter element...https://www.machinerytrader.com/parts/search?PartNumber=9M5451&SearchType=Start
Injection pump is not hard to overhaul but I doubt that's your problem. Those early scroll pumps go forever unless you get water in the fuel.
have you check the breather vent on the fuel cap ?
"i reject your reality and substitute my own" - adam savage. i suspect my final words maybe "well shit, that didnt work"
instead of perfection some times we just have to accept practicality
if the injectors were sad would that be a issue from start up?
unless there losing spring pressure due to heat. but that would be really weird.
as for that filter screen try adding a zero after the m sometimes that works in the cat parts lookup system. or give the nearest dealer a call they may have to look under classic parts. also a google search is your friend.
"i reject your reality and substitute my own" - adam savage. i suspect my final words maybe "well shit, that didnt work"
instead of perfection some times we just have to accept practicality
if the injectors were sad would that be a issue from start up?
unless there losing spring pressure due to heat. but that would be really weird.
as for that filter screen try adding a zero after the m sometimes that works in the cat parts lookup system. or give the nearest dealer a call they may have to look under classic parts. also a google search is your friend.
[quote="trainzkid88 post=259417 userid=11838"]if the injectors were sad would that be a issue from start up?
unless there losing spring pressure due to heat. but that would be really weird.
as for that filter screen try adding a zero after the m sometimes that works in the cat parts lookup system. or give the nearest dealer a call they may have to look under classic parts. also a google search is your friend.
[/quote]
I would think so, but running out of other possibilities.
Not a bad idea to call the dealer and see if theres a guy there thats helpful with the classic parts. I really wish I had the old element screen to compare to.
I've googled it several times and still come up empty on the filter. This definitely isnt the first place I've asked.
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