Intermittent power? Opinions Thanks - Diesel Forum

ejstoy · 11-17-2009, 01:56 PM

My truck seams to have the power come and go. Not realy a big difference but enough to notice for sure. Some times it dose fine, some times it dose realy well. Not for sure but is this just variance in fuel. Can there be that much difference in fuel from one place to another. If so how do people compensate for this. Or is there some other more likley culprit.

On a side note, You guys are Good!. This furum is a wealth of information. I have not found a proplem yet I couldn't sure for or ask and get the answer. I only hope that you guys get as much in return as we do from your knowledge. Thanks.

blageurt · 11-17-2009, 06:33 PM

I would check your fuel pressure . . . Your pump could be weak

ejstoy · 11-18-2009, 09:24 AM

Would the pump come and go like that? I hate to chalk it up to fuel but this last tank seems to be running realy well.

Thanks

96strokerlb · 11-18-2009, 09:38 AM

Places that dont sell a ton of diesel could get moisture in their diesel causing it to not be as efficent as persay truckstop fuel. also our waterfiltration is pressurized and you get better filtration with a vaccume filter then a pressure. which can really only be accomplished with an elec fuel system ranging from DIY - 500ish to off the shelf per say from one of the vendors for around 1000+

nm50 · 11-18-2009, 11:11 AM

Check your turbo inlet hose (orange if stock). Mine was doing this when I had the stock hose. It was too soft and would collapse sometimes when getting on it. I replaced it with a newer SuperDuty style hose and it runs consistently now. The old hoses just get oil soaked and weakened to the point they can't hold their shape. Good luck!

ejstoy · 11-20-2009, 11:09 AM

So I guess its fuel. It ran great all week on the fuel in the rear tank. I put $20 bucks in the rear tank and drove about 100 miles. The preformance was not the same.

So I guess my question is, is there some additive or something to get that preformace all the time. Its not bad now, its just not as good as it was this last tank.

One of the guys at work thought it could be old diesel. The store I bought it from was a mom-n-pop sort of place. Is it posible that is older higher sulfer fuel. Or maybe they added some gas to there fuel?

oldrebuiltdodge · 11-20-2009, 01:31 PM

There are all kinds of diesel fuel additives out there. You will just have to look at your local parts stores, and truck stops to see what you want. You might also look at your injector contribution, it could be you have some injectors starting to wear.

ejstoy · 11-24-2009, 02:16 PM

So like I said, ran $20 through after it ran so good. Not the same. Ran another $20 with an additive. Not the same. Went back to the same station I got the fuel when it ran so good and filled up. Runs great again.

What would make thier fuel better than other stations. Is there really a little gas mixed in with the fuel. If so how much gas do I mix with my diesel

. Just kidding.

I asked the owner if there was some difference in the fuel. He said no, and that fuel last him about a month after getting a shipment. I guess I got about another week of the good stuff.

96strokerlb · 11-24-2009, 06:04 PM

the difference in fuel could be age of the fuel in their bulk system a place that only sells a few hundred gallons a day vs a place that sells a few thousand. the place that sells little could have their tanks full for weeks vs a few days. beleive me theirs a difference between ur mom and pop shop vs a flying j travel america and such plus their prices are usualy lower since they sell that much more fuel.

we have only 1 place in town that sells diesel and we have a coop that runs semis 16hrs a day that fill up there plus all the farmers and diesel owners so their inventory is refilled often therefore no time for moisture to build up.... i always buy diesel at places that sell alot of diesel a day to stay away from problems like your having.....

not saying their might not be other problems though

ejstoy · 11-25-2009, 11:06 AM

Yea I'm sure there is a difference from mom & pop places to the flying J type places. I try to buy my fuel from the bigger places. I was almost out when I bought fuel from this place and even then only bought a small amount.

But what would make the fuel from the smaller station better.

89newporker · 11-26-2009, 01:06 PM

Here's a little tip; I cannot stress this enough, ALWAYS buy your fuel from a station that is consistently BUSY. The reason for this is because their fuel will not be sitting in the ground for extended periods of time which can cause a myriad of problems for you, eg; water in fuel , contamination such as bacteria and all sort of other issues all of which can be extremely expensive to repair in a diesel

ejstoy · 11-28-2009, 11:47 AM

Ok I got it. Truck stops are better. I almost always buy from big truck stops.

So why is this fuel from this little hole in the wall station so much better. If the fuel from this place had sucked. I would know why. Thats why I only bought $20 worth. But then when it ran so good I bought more. So far I've about $150 worth of this fuel from this little station, and the truck has never ran so good.

89newporker · 11-29-2009, 08:19 PM

Depends on who their supplier is and how often they fill up the tanks in the ground I'll bet that they don't have fuel just sitting for longer than 2 weeks
some stations have partnership with larger fuelers such as chevron/texaco; shell oil ;etc. It all boils down to who they buy their fuel from.