My guess would be that yea, the shop would say its fine if i took it there but I do all of my own work. Ive asked everyone and theyr brother around here what they think...everyone says injectors. Thats easy to say when its not theyr money, so I figured I would see what kind of answers or help I can get here

 

diesel 911 kleen works great my buddy pulled his injectors the other day they were clean as new he pulled them a few weeks ago dirty he wanted to see how well that stuff works about a tank later with diesel clean back to normal ,the stuff works great now if you want extra fuel millage there is better diesel fuel additives out there but your going to pay a ton of money for them rev x works well from from what i hear

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^agreed did you check all of your psi oil psi fuel psi? strange thought it might be the fuel injector pump going i dont think its your injectors

 

Yes, I have checked the hpop psi and and that is good around 2600 psi at 30% dc if I remember correctly...and ran a mechanical guage on the fuel bowl port and under normal driving load fuel psi stayed steady at 55psi or so...its been a while ago now diesel kleen seemed to help when I ran it religiously maybe .5 mpg better than without it. For the price I dont think its a bad product. Idk what everyones thoughta are on this but I run Howes lubricator in my 99 in the cold winter months here in the midwest, never had any issues, no gel-up.

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Moose, I generally only get fuel at one of 2 places. The main place is a truck stop that has reg #2 fuel (not bio blend) its a very high volume fuel station. The other is wal-mart, they have bio blend but its generally really cheap. Either place I fill up I notice no difference. I did fill the truck up at one different station a couple montha ago and same mpg out of that tank as well. I know most of the fuel now days is crap but I dont think that is my issue here...

 

I like to run redline diesel fule catalist..... makes my daily driver ( 87 idi ) she pulls harder and gets about 1mpg better.... give it a try... cant hurt i guess...... and yes a small exhaust leak can kill some turbo spool and push at rpm..... i work on a lot of lod detroits and newer cummins along with everything in the middle.... slap a set of exh gaskets in.... cheeper than injectors... at this point.. give it a whorrell...... will keep thinking

 

Thanks for the reply 4x4. Im leaving for vacation friday and plan to do the exhaust manifolds as soon as I get back next weekend. What are your thoughts as far as just installing gaskets or should I have the manifolds re-surfaced since they are likely warped?

 

they might be warped a little. probably not bad tho. are you sure it's just not a broken bolt?

 

Im not positive, the bolts are all still intact but that doesnt mean that they are not broken. I havent had much of a chance to work on it lately but am going to get right on that next weekend. I will let you guys know what I figure out. Any other ideas wouldd be appreciated and thanks to everyone who has replied to my post thus far. Thanks guys!

 

Hello everyone,
I am a per unit, cost analysis, type of guy.
I bought an $8.00 bottle of Diesel Kleen. It can treat 40 gallons of fuel.
$8.00 divided into 40 gallons equals $0.20 per gallon. THATS twenty cents per gallon added to the already high cost of the fuel. With no better than .5 mpg improvement, does it make sense to spend the extra money for so little benefit. I know the Diesel Kleen can lube and quiet etc...
Just can't get past the fact that the $0.20 is adding to the already high price of diesel fuel.

Thoughts?

 

have you taken your truck to get it compression tested your truck may be lacking some compression and there may be where your lacking your mpg just a thought. and diesel klean is never bad to put in your truck anything that will clean and lube your motor isn't bad so 20 cents is so worth it in my opinion

 

I would check your ebpv to make sure its not sticking. I would also leave it unplugged for now.
I replaced my ipr and gained mileage back; I would suggest replacing it. I had good readings on AE but replaced it anyway with best improvements. I also replaced icp because it had some oil in it but I do not think that did anything.

What Cps are you using? If you do not have the good black one; I highly recommend the BWD or Delphi; much better than ford.

Also make sure you fix any boost/ exhaust leaks. Intake plenums are known to leak. I had my exhaust manifolds resurfaced but still had to use gaskets. No improvements fixing exhaust leaks for me.

Good luck.