"The mechanic said the only way to test them is to loosen a line with the engine running....?"
Gosh, that seems a bit risky and also seems to ignore an injector test stand from which you can observe the spray pattern.

Did the guy REALLY mean that?

SSSHHHHhhhhhhhhhhhh!!! Experienced Diesel Technician at Work!! <img src="/forums/images/graemlins/rolleyes.gif" alt="" />

Thanks for the interesting info, crossbones. You guys always amaze me at the collective info that's available here. I can't remember the exact numbers on my nozzles, but I do remember they start with 444. I'll get the numbers just for comparison.

Now I'm curious: is the pump actually Bosch, or is it something else?

Just fur fun, diesel here at one place is $1.049, probably about $1.129 at a normally more expensive place. Gas is $1.199 and up. And it's supposed to go up. *Sigh*.

Nice to see fuel took another HUGH jump today. <img src="/forums/images/graemlins/evil.gif" alt="" />

For all it's worth, the number on my nozzles are as follows:
444 NP-DNOSD193

I started to burn transmission oil again, this time mixed with a lot of diesel. If coking is all that happens, I can deal with it. Driving is starting to become rather expensive. Gee, like insurance wasn't enough! <img src="/forums/images/graemlins/scared.gif" alt="" />

HEY ZACKERY, THE NO ON YOUR NOZZEL,S THE SD 193 IS THE CORRECT NO, FOR THE DSL KIKI NO, FOR THE C223 ENG IN IT IS THE SAME FOR ALL YEARS OF THAT ENG TURBO OR NONTURBO, JUST THE OPENING PRESSURES ARE DIFF ON THE TURBO, AND THAT IS DEFFINATELY A DSL KIKI PUMP LICENSED BY BOSCH TO D/K AND A LOT OF THE INTERNAL PARTS ARE INTERCHANGABLE , BUT ALL DIFF CALIBRATIONS , FROM YEAR TO YEAR , AND TIMING SETTING S ARE SOME WHAT DIFF,A LITTLE , AS FAR AS SETTING THE TIMING WE FOUND MANY YEARS AGO , ON A CHASSIS DYNO THAT THE ENG PRODUCED IT MOST TORQUE AT 44 THOUSANDS READING ON THE DIAL INDIACATOR AND THE MOST HP. WAS AT .50 RIGHT WHERE THE FACT SAYS PUT IT , THI IS OF COURSE WITH THE TIMING MARKS ALIGNED WHERE THEY SHOULD BE , ODDLY SOME OF THE ENGS TIMING SETTING, ESP IN CAL , WERE 8 DEGREES BEFORE TDC AND SOME OF THE FEDERAL UNITS WERE AT 10 AND 12 DEGREES,DEPENDING ON THE YEAR ANYTHING MORE THAN THAT AND THEY WOULD REALLY RATTLE ,NO MATTER WHAT YOU STILL ONLY HAD 60-62 HP UNTILL 84 WHEN THEY MADE IT INTO A REAL HOTROD , BY CHANGING THE NO 2 AND NO3 MAIN BEARING WIDTH, NARROWING THEM BY ABOUT AN 1/8 INCH THE HP WENT TO A WHOPPING 84 HP JERRY

I checked my injectors in the truck today, and they are all breaking at 1500 PSI, with only one not really fogging as it sprays. But get this: with only 200 kms on them since I mixed permatran with diesel in a 40/60 mix (60 diesel), the injectors were beginning to coke at the nozzles! It wasn't to the point of power loss, but it was heading there. All I can figure is 1) the coking happens when the engine is cold, as it starts and runs fine on this mixture hot or cold, and the combustion chamber isn't up to operating temp, not allowing the oil to get hot enough to completely burn off, or 2) there is no way in h*** I can run this stuff no matter what. When I took the injectors out, the engine was at operating temp so they were hot, at least warm enough to need a rag to hang on to them, which is going to warm the fuel to the same temp before injection, since fuel isn't flowing through the nozzles like a fire hose. I have a feeling it's going to be #2. Waste oil furnaces have a very similar build-up, and they run hot for hours. I used to run the old style furnace for years, and often had to use a hammer and chisel to clean the fire tray and nozzle. Same color and texture of build-up. I could watch the fire in the furnace through a view port, and the build-up wasn't formed at the beginning. I have to make a run in a couple of weekends (200 mikes or so), mostly highway, so I'll use what's left of the mixture then, waiting until the motor is up to temps.

Next I'll try new canola as it's not much more than diesel now. Ambient temps here are still high enough to try this with un-heated lines. Diesel here at one garage I bought furnace oil at (for the Kubota) was $1.179 a liter, full serve. Furnace oil was $0.989c/l. When will the madness stop!?! <img src="/forums/images/graemlins/zombie.gif" alt="" />

Just as another note on the hydraulic oil saga, I went for a longer drive on the weekend...300kms. I let the truck warm up, then switched over to the 50/50 diesel/hydraulic mix, ran it for most of the trip, then switched back for the purge. I could tell the injectors were getting dirty again. So last night I pulled them and cleaned the tips again. All 4 had build-up again. I guess this means no hydraulic oil for me <img src="/forums/images/graemlins/frown.gif" alt="" /> .

The sad thing is, I took them out, cleaned the tips, and re-installed them in 1/2 hour, without rushing. I guess that shows I've been taking them out too often <img src="/forums/images/graemlins/lol.gif" alt="" />.

Oh well. Back to the ol' drawing board.

Hello. Update on some of the things I have learned in the last few weeks of my testing. First off I built a pop off tester, second I purchased a dynamic timing light (ouch). There are several things that can change the timing of the injection in relationship to crank timing that greatly effect how well the engine can run on other fuels as well as diesel. Obviously the IP setting and the injector pop off pressure(low pressure=early timing). The viscosity of the fuel can change timing. One thing that really surprised me is the major effect that removing the spring in the CSD as Jerry highly recommends. Jerry has said that timing differed from year to year, this is what I found on my 1982 N/A. I used the probe and the timing light to confirm readings.
Pump timing:
RPM=750's, timing 15.5? BTDC (matched factory timing of 15?) on diesel
RPM=2800's, timing retarded to avg. of 11.4?BTDC on diesel,,,even more with blended fuel(with spring in CSD) this timing retard seams to match some of the info I have about emission settings of the time...???
Timing at the injector:
RPM=750's timing=8.6? BTDC
RPM=2800's timing= 7.5? BTDC avg.

Now when I removed the spring in the CSD, man did things start improving :)))
Pump timing:
RPM=750's timing 15.4? BTDC
RPM=2800's timing 22.7? BTDC avg. ( I have read that the VE IP can have a 8? advance)

Now another big surprise, when I checked the timing at the injector, I did not get the full 7.3? advance.......only about half of that......

So the final setting I used is about (12?BTDC at 2800's injector timing)which left me at (16.4? at 750 RPM pump timing). It cranks better than it ever has and runs pretty good on diesel. This setting on diesel seams to have good low end torque and a little down on high end horse power. I set it there thinking more about running my blend than diesel as my blend gave me improvements in high end horse power or it seamed.

I believe that I have come up with a way better tell how your engine is responding to any type fuel change and just maybe be able to tell if your engine(compression, timing, injector pressure, etc.) can safely use which ever fuel you run without coking issues. The results of the tests so far are amazing. I posted the why's and how's on the http://biodiesel.infopop.cc/groupee/forums/a/tpc/f/159605551/m/9221066701

I welcome your comments, corrections and suggestions.
crossbones

crossbones--

Can you tell us about your timing lamp and its' cost?

Thanks--

Paul

http://tinytach.com/design/timing.php

I am very please with it!!!

crossbones

Nice timing light!

Saaaaay...do you suppose I could borrow it for the weekend, and I'll bring it back Monday. With the rake. <img src="/forums/images/graemlins/smile.gif" alt="" />

I didn't know there was such a thing. Now to me, that's the ultimate way to check the timing. Kind of like the difference between setting points where they SHOULD be and where they need to be. Of all the points I've changed over the years on old snowmobiles and motorcycles, no wonder I like diesels.

Gee, maybe I could modify a regular timing light, starting with a knock sensor perhaps..... <img src="/forums/images/graemlins/evil.gif" alt="" />