another bad injector

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another bad injector

Postby mikeshauling » Fri May 23, 2008 10:37 pm

Well, ive got an injector ticking again. The first time i had this happen i was just blending svo in my diesel tank. I blended for @ 20000 miles and i decided to get a 2 tank heated system after i got a little better informed. I figured my injector problem was due to cold svo blend. since then i have been running a heated 2 tank system and i dont switch til 160*F and my temps while driving are from 160-190. I use a dc centrifuge to filter and i dewater good also. I fill my svo tank on my truck through a 5 mic. filter which lasts for several hundred gallons and my truck has a 5 mic heated filter also. Now i dont think my injector failed due to dirty or cold fuel,SO does anybody have any suggestions or helpful info on this problem?
09 6.7 CTD
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Postby roverhybrids » Sat May 24, 2008 9:13 am

What's you fuel pressure on VO?
What brand of filter on the truck?
What kind of tuner?
which number injector the first time?
second time?
how much time idling?
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Postby SunWizard » Sat May 24, 2008 12:48 pm

What kind of filter? if its not absolute rated, they only filter 50-80% of the particles to 5 microns. The particles that get through could damage injectors over time. I would go 2 micron absolute for that truck.

Do you do a hot pan test on each batch?
YVORMV - Your veg. oil results may vary.
95 Dodge Cummins 4x4 SVO WVO conversion.
81 Mercedes 300D- stock and happy on V80/D20 blend.
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Postby jburke » Sat May 24, 2008 7:36 pm

"SO does anybody have any suggestions or helpful info on this problem?"

an injector autopsy would be very useful.
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Postby mikeshauling » Sat May 24, 2008 7:41 pm

I have a baldwinBF597, i was told its 5 mic absolute,now im looking for a 2 micron absolute. Yes i pan test after centrifuging @ 160-180 F until <1/16 " This is the 2nd inj. problem both # 1. I figured the first time was of poor filtering and NO heat,but this time i have good heat and filter to what i thought was totally good enough. Now, my fuel pressure has been a problem , I cant get much pressure from my walbroFR series. I am getting 4-6psi @ idle and when i have a high demand for fuel i can get it to 1 easy sometimes 0 if im going uphill on a long grade,but the truck doesnt stumble so i figured my dipricol guage wasnt reading the svo correct. I have the pump pushing through a heated filter then a FPHE 6 port pollack to ip. I have put new filters on and no pressure difference. My tuner is set on tow setting(90hp) it does timing and duration only. Do you think that my fuel pressure being that low could cause this problem, i thought my ip would get it before an injector. I burn 100-200 gal. of svo weekly and i put alot of long trips on svo, and i NEVER idle on svo. I purge when i know im going to be stopping.
09 6.7 CTD
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Postby SunWizard » Sat May 24, 2008 8:10 pm

Cummins changed the 2002-06 specs to 2 micron, "to improve the durability of the fuel injectors" see:
http://www.baldwinfilter.com/engineer/pdf/06_1.pdf
YVORMV - Your veg. oil results may vary.
95 Dodge Cummins 4x4 SVO WVO conversion.
81 Mercedes 300D- stock and happy on V80/D20 blend.
Low fossil net zero house- 100% solar power and heat.
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Postby roverhybrids » Sat May 24, 2008 8:46 pm

Interesting read that the Baldwin BF957 is not approved

http://www.cumminsfiltration.com/pdfs/p ... -02-1A.pdf

I believe that Cummins specs a 7 micron filter, not 2. I couldn't find the micron rating for any of these in my little time searching.
Maybe the Cummins/fleetguard 7 mic is absolute and you would need a baldwin 2mic nominal to cross to???

As for your fuel pressure, do you ever get low rail pressure codes?

I think you should upgrade the filter to a fleetguard stratapore media in the 3 micron range and add a better pump.
Last edited by roverhybrids on Sat May 24, 2008 9:05 pm, edited 1 time in total.
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Postby SunWizard » Sat May 24, 2008 8:50 pm

That PDF doesn't say what engine or years that is for, and it doesn't specify any micron ratings.

This page says:
* A 2 micron fuel filter (04883963AB) replaced the 7 micron filter (04883963AA) for ISB applications. (all 24 valves starting in 98.5)
http://dodgeram.org/tech/dsl/Facts/96specs.html
YVORMV - Your veg. oil results may vary.
95 Dodge Cummins 4x4 SVO WVO conversion.
81 Mercedes 300D- stock and happy on V80/D20 blend.
Low fossil net zero house- 100% solar power and heat.
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Postby roverhybrids » Sat May 24, 2008 9:31 pm

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Postby mikeshauling » Sat May 24, 2008 9:49 pm

Yes that does show 7 mic. I will be putting one in my stock filter housing. I am needing to know where i can get a spin on 2 mic filter that replaces the baldwin BF957
09 6.7 CTD
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Postby SunWizard » Sat May 24, 2008 9:54 pm

roverhybrids wrote:Maybe the Cummins/fleetguard 7 mic is absolute and you would need a baldwin 2mic nominal to cross to???

That could be it, the page you linked showing (Single Pass) 7 micron @ 98.7% Efficiency, that is absolute. Most filters aren't absolute or even rated for Efficiency. And single pass 98.7% is even a tougher standard than absolute.

That still doesn't explain the page I linked that says they changed to 2 micron and gives new part# for both Dodge and Cummins parts.
YVORMV - Your veg. oil results may vary.
95 Dodge Cummins 4x4 SVO WVO conversion.
81 Mercedes 300D- stock and happy on V80/D20 blend.
Low fossil net zero house- 100% solar power and heat.
SunWizard
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Postby roverhybrids » Sun May 25, 2008 9:59 am

SunWizard wrote:That PDF doesn't say what engine or years that is for, and it doesn't specify any micron ratings............


The intersting part of that page is that the Baldwin filter he is/was using is the BF957 is doesn't pass a 20 mic single pass test....
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Postby mikeshauling » Sun May 25, 2008 9:02 pm

No im not going to use it(BF957) anymore but i am gonna find a 2 mic absolute, after i get this injector fixed or replaced.
09 6.7 CTD
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