how much is to much fuel conditioner - Ford Powerstroke Diesel Forum
7.3L IDI (Non-Powerstroke) Diesels Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

 
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post #1 of 9 Old 01-27-2008, 04:09 PM Thread Starter
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how much is to much fuel conditioner

1992 f250 7.3 non turbo.truck ran good until i added some fuel conditioner.started to run rough so i added more fuel conditioner.now the truck wont run less then 1500 rpm.i thought it was the fuel pump so i checked it and it has 17 on the vacuum gauge.what happens when you add to much fuel conditioner
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post #2 of 9 Old 01-27-2008, 04:33 PM
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I`m not sure about other brands but Lucas has on the label that if you add too much it will not hurt the system in any way.
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post #3 of 9 Old 02-06-2008, 05:42 PM
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Overdoing the conditioners won't hurt a thing, unless you've managed to "ungunk" the whole fuel system. Change your fuel filter. I've stuck a gallon of canola oil in mine regularly to clean injectors up, and I don't have any problems other than I know to change the fuel filter every fall
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post #4 of 9 Old 02-06-2008, 05:51 PM
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canola oil???? does that resemble the conditioner and how much diesel with that 1 gallon? thank you

late 99 f250 7.3L 265k
4" lift, dual front shocks, adjustable air bags added to rear.
new calipers, brakes and rotors all around
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rebuilt tranny with heavy clutches and shift kit. billet cowan converter.
finned front and rear diff. covers.
rhino liner bottom strips
cattle front bumper with 2" receiver, black steel rear bumper. 315/75/16 AT
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post #5 of 9 Old 02-09-2008, 10:12 AM
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I always fill my fuel filter with straight Lucas on both my diesels when I change them just make sure your engine is warm or it's hard to get started but when warm it fires right up
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post #6 of 9 Old 02-09-2008, 10:41 AM
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how often should i change my fuel filter?

late 99 f250 7.3L 265k
4" lift, dual front shocks, adjustable air bags added to rear.
new calipers, brakes and rotors all around
isspro guages
rebuilt tranny with heavy clutches and shift kit. billet cowan converter.
finned front and rear diff. covers.
rhino liner bottom strips
cattle front bumper with 2" receiver, black steel rear bumper. 315/75/16 AT
diy intake
4" straight pipe
wastegate delete
ccv mod
foil delete
zoodad mod
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post #7 of 9 Old 02-09-2008, 11:04 AM
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I've been changing mine at every oil change but thats probally a little excessive let see what some of the long time owners have to say
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post #8 of 9 Old 05-03-2008, 11:42 AM
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15k i think.


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post #9 of 9 Old 05-03-2008, 06:16 PM
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If you drive it rough, have dusty conditions, or tow a lot, then every oil change or 5000 miles. I change mine every other oil change or 10,000 Miles w/no problems.

97 F-350, 7.3 psd, xlt, limited edition, obs, dually, E40d at, 410 r axle, reg. cab, 8ft bed, 145000 miles, DIY Tymar intake (napa filter) CCV mod. fpr bb mod, HPX crossover pipe, SS Bully steps, Reese Fifth wheel hitch, CB Radio, 3" DP /4" back w/cat delete and 4" flow-thru muffler w/5" tip.
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