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Topic: Fuel Filter Changing 101 (Read 6531 times) previous topic - next topic
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Re: Fuel Filter Changing 101

Reply #25 –
Yahoo Message Number: 71748
Al, the transmission fluid in the filter sounds like the ideal solution, in that you can easily carry a couple of bottles of trans fluid, as opposed to hauling around a container of diesel fuel that is constantly deteriorating. Also, the trans fluid lubes the gasket and should be a quick, easy, and clean possibility. I would think that the trans fluid would be thicker and smoke some, but I sure don't know anything about it. We'll see what the rest of the group has to say and I hope Mikee and Ken chime in.

R. D. Vanderslice
SOB

Re: Fuel Filter Changing 101

Reply #26 –
Yahoo Message Number: 71749
Ken Here, Another Chime In, I enjoy all your posts on Fuel filter Prime fuel filter or use hand fuel prime pump or cycle you Ign Sw. On newer Diesels like the Cat C-15 No air is Allowed into this fuel system as a Injector failure do to Lack of Fuel Lube is certian! I know on newer Cummins I-SX and Cats Fuel injectors are around 1000.00 dollars! Each! In our shop I was told Im allowed getting air in the newer Common fuel rail systems only once then if I did it a second time I will pay out of my pocket for Damage. I was told use clean fuel and FILL THE FILTERS!!!! Dont believe me call your dealer! Ken retired Cat Tech. 99 Allure 30356.

Re: Fuel Filter Changing 101

Reply #27 –
Yahoo Message Number: 71750
Yeh, lets wait to hear from them. We always used diesel fuel in a bucket which we built raising the discharge 2 inch above the bottem. Trans fluid is in fact ideal when out on the road to change a fuel filter. Sure does beat carrying diesel other then in the fuel tank.
Always something new on the CC Forum.....
AL

00 affinity

Re: Fuel Filter Changing 101

Reply #28 –
Yahoo Message Number: 71751
Marv, I agree on your post BTW Some older diesels the filters are before the Mach, or Electric pump as a Racor water seperator is between the Tank and lift pump. I never had filter innards sucked out. In a way wish I were still working as these comments would get comments from co-worker's around the shop Ya know I spent lots of time on Cat Marine Diesels and they are still out there and Water is a biggie so most had 2 or 4 racor fuel filter's and the Engr, had a Ga. To measure filter glogging up and clear fuel bowls to see water. I know there are X-Cat tech's out there so Join in! I never told my Customers I was a RVer. Mainly to protect myself and keep the talking to a Min. Enjoy all the post's! Ken 99 Allure 30356.

Re: Fuel Filter Changing 101

Reply #29 –
Yahoo Message Number: 71769
Any filter has an exit and an insit, or on input side, and and output side. The fuel goes in from the tank, and the fuel goes out to the motor.
So, what is the problem with putting fuel into a filter from a can, as long as you pour the fuel into the hole that would be the same hole as it goes into when it comes from the fuel tank. The challenge may be to figure out which hole, or set of holes this is, and avoid putting fuel into the other hole or holes. Use a funnel or a battery bulb.

Re: Fuel Filter Changing 101

Reply #30 –
Yahoo Message Number: 71774
Problem with this is the big center hole is the out. Next to impossible to get fuel in the filter with the ring of little holes.

Leonard
97' Magna

Re: Fuel Filter Changing 101

Reply #31 –
Yahoo Message Number: 71778
Ken, I have been told that it is very difficult to change filters without getting a very small amount of air in the system. Are you saying that on the newer engines it is different and they will not tolerate a very small amount of air without damage to an injector? Looks like there would be a great likely hood that there would be many, many damaged engines due to some of these oil change and service type places not taking the time to make sure they didn't get air in the system. You said Cat-15 and ISX's, what about newer ISL's?

R. D. Vanderslice
SOB

Re: Fuel Filter Changing 101

Reply #32 –
Yahoo Message Number: 71803
Even if you are a good enough aim, you still have to wait for the fuel to penetrate the filter media and fill the output chamber. Faster to pour both at once.

George Harper
04 Allure
31093

Re: Fuel Filter Changing 101

Reply #33 –
Yahoo Message Number: 71820
Just get a pipe nipple the same size as center hole and screw it into the center hole. That is what most folks use.

Mikee

Re: Fuel Filter Changing 101

Reply #34 –
Yahoo Message Number: 71842

What am I missing! I thought you filled the entire filter You fill the outside chamber( little holes) and the inner chamber( large hole) so that the filter is totally filled.
Fritz

Re: Fuel Filter Changing 101

Reply #35 –
Yahoo Message Number: 71847
R.D. You are correct! I had a Cat C-15 a co-worker was working on, Turns out all six injector's were destroyed! After replacing the injectors the engine ran fine. The problem is Cat rental units have a low fuel level shutdown but when units are sold to some endusers they disable this low level shutdown then the damage occurs. I remember my coworker spent a lot of time troubleshooting this, The Laptop was no help on this problem. Our Master Teacher was involved also. Again shop tech's good and bad are out there! A good tech will prime the filter but my old school real life is use clean container and clean fuel. Yes all larger diesels can not tolerate air in the fuel system's on High pressue fuel rails and pre fuel rail electronic inj. systems. Again you run this by a dealer and they will quote their service Man on fuel filter changing. BTW I enjoyed the post on ATF as never heard of this and I would run this by my Master Teacher for his thoughts if I were still working. I know truckers do things like this just like they add a gallon or two of Gasoline per tankful in Colder climents to allow the engine to run hotter but this was years ago with older Mach. Pumps and Injector's. Back in High school I was a outboard Mach. I use to Pickle a Mercury two stroke outboard with Marvel Mystry Oil for winter storage, Which I believe is like ATF. ATF in a newer diesel well I really dont know. I enjoy all your posts! Ken 99 Allure 30356

Re: Fuel Filter Changing 101

Reply #36 –
Yahoo Message Number: 71849
Fritz,

The small outside holes are where the unfiltered fuel comes into the filter then goes through the filter media and out the large center hole to the engine. So if one can fill the filter through the little holes then the fuel goes through the filter media as the filter is filled. If one pours into the big hole then the fuel is not filtered. Using a nipple as Mikee suggest allows to fill through the little holes as the nipple acts as a dam. A good solution from Mikee and one I had not thought of.

Leonard

97' Magna 5418

Re: Fuel Filter Changing 101

Reply #37 –
Yahoo Message Number: 71851

Leonard

Thanks for your reply. I was concerned that I was doing something wrong. My procedure is to use a clean gas container, filter the fuel using nylon stocking and fill the entire filter. My filter has to be manually. primed using the push piston on the engine. Less work if you fill the filter.
Fritz 98 Allure 30223

Re: Fuel Filter Changing 101

Reply #38 –
Yahoo Message Number: 71853
My primer pump is a sick joke. Replaced with a new one and it was a double joke on me. The pump has to short of a stroke and to little of a piston to be of any use. Have to fill the filter, start and work to get all the air out. Our household has not had nylon stockings in so many years, kind of forgot what they are. he he. Looked at trying to find a better primer pump and gave up. When I worked for Cat, they had a very good one on the off-road diesels. Large unit that moved volumes to get the job done quick. Only pump I have seen that does the job as it should be done.

LIke the ATF ideal. Would really like to hear from more then one source that it is an acceptable practice. We would not think of using diesel fuel in a automatic transmission. So not totally convinced using ATF in a diesel is a good ideal. My concern is the ATF not burning clean and causing carbon to form on the nozzle tip.

Leonard
 

Re: Fuel Filter Changing 101

Reply #39 –
Yahoo Message Number: 71855
I replaced my primary with a racor filter assembly that has a primer pump on it which gives me a primer on the primary and the secondary cat filter assembly has one as well. I sill fill the filters using the outside holes before installing and have no troubles. I carry a small container with 2 gallons of deisel for emergency filter changes .
Marc 05 affinity #6429