6.9 won't start
i ain't rite
Joined: Mar 2005
Posts: 65,481
Likes: 5,542
From: Marlboro Mental Hospital.
remove the fuel filter and fill it with diesel fuel, diesel kleen, or automatic trans fluid. then try starting. it should start and die.
then remove the filter and refill it. it usually only takes 2 or 3 times to get it running this way.
then remove the filter and refill it. it usually only takes 2 or 3 times to get it running this way.
i ain't rite
Joined: Mar 2005
Posts: 65,481
Likes: 5,542
From: Marlboro Mental Hospital.
that is an old wives tale.
there is just as much if not more lubrication in the current fuel as there was with the old high sulfur fuel.
the difference is the old high sulfur fuel had a cetane rating of 60 or higher, the new ulsd fuel only has a cetane rating of around 40
Freshman User
Joined: Feb 2015
Posts: 40
Likes: 0
From: Avilla
tjc, don't want to start an argument, but i've seen way too much literature and seen too many fuel system failures and know too many fuel suppliers to agree with the lube issue, when you maintain a couple million dollars worth of equip you tend to do your research on products
Trending Topics
i ain't rite
Joined: Mar 2005
Posts: 65,481
Likes: 5,542
From: Marlboro Mental Hospital.
i get 150,000+ miles out of injector pumps and injectors without adding anything to the fuel to "help replace sulfur"
there is more than enough lubricants in the ULSD to lubricate everything.
and there are plenty of others here that get the same results without ever adding anything to their fuel tanks.
the only people that say there is not are the people that sell the additives.
there is more than enough lubricants in the ULSD to lubricate everything.
and there are plenty of others here that get the same results without ever adding anything to their fuel tanks.
the only people that say there is not are the people that sell the additives.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Post Fiend
Joined: Nov 2005
Posts: 7,437
Likes: 4
From: Charles Town, W bygod Va
I googled "diesel lubricity study" and there are a lot more of them than I care to read. I bet you can find several to support both views. I'm not running any additives except an occasional fuel filter full of atf or diesel clean.
Thread
Thread Starter
Forum
Replies
Last Post
64F260
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
10
Mar 13, 2010 01:17 PM
fred e
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
4
Nov 24, 2007 09:11 PM
turbogt
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
29
Jan 10, 2007 06:24 PM