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Old 07-04-2017, 01:41 AM   #155
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Go to the Power Train Garage/Cummins Forum and read the post on Repeating Caps Failures. There's alot of good info there on the ISC 8.3L CAPS engine.
We have an 03 Scepter with 55K mis. and it has this problem. It may be a good idea to have a diesel mechanic put a diagnostic computer on it to see what if any fault codes pop up. A $200-300 diagnosis could save you $5-10,000 on motor repairs.
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Old 07-04-2017, 01:45 AM   #156
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Quote:
Originally Posted by Thebrightway View Post
Go to the Power Train Garage/Cummins Forum and read the post on Repeating Caps Failures. There's alot of good info there on the ISC 8.3L CAPS engine.
We have an 03 Scepter with 55K mis. and it has this problem. It may be a good idea to have a diesel mechanic put a diagnostic computer on it to see what if any fault codes pop up. A $200-300 diagnosis could save you $5-10,000 on motor repairs.
Sorry folks I meant to write this in another thread.
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Old 07-04-2017, 12:57 PM   #157
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[QUOTE=
i have a question for TR4 or Jleano1 also. It was said there is a write up for how to wire in relay for factory lift pump to trick ecm to think its working.
Would greatly appreciate any and all pics and part #s for relays i might need to do this.
Have the pump already and haven't yet decided to put it next to tank or between primary and secondary filter. Fass send a filter with the pump but not sure if its what i want to use or not.
So many great ideas here its hard to decide but i believe positive pressure to the caps pumps has to be better.
Its like sucking through a straw compared to blowing through it.
Have a great 4th everyone!![/QUOTE]

Have a look here;
Fass fuel pump install

I on the road now, so if you need more information, post back.

Bill
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Old 07-05-2017, 11:31 PM   #158
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TR4 I see where you and others installed your pump between the primary and secondary filter in the back of the coach.
When I called Fass they want the pump as close to tank as possible.
Want it to push fuel not pull.
That being said, did you decide to put it back there for easy access? And or to be able to have a filter before fuel gets to the pump itself? Fass sends a small inline filter with the system and say to replace it every 6K miles.
I know you and others seem to have no issues with where its mounted towards the back with the pump pulling fuel so I'm torn on what to do. I have plenty of room to install mine by the tank and can get access to the original lines to tap into. But not as easy to get to if i have issues since its under the coach.
Just curious more than anything.
Thanks for the post back about the lift pump relay tie in, sure appreciate the response.
Safe travels.
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Old 07-09-2017, 09:56 PM   #159
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Got my Fass pump installed yesterday and decided to put it next to the tank.
Did the relay for the poem lift pump also and all seems to work fine.
Did a 4 hour run today pulling the car on the tow dolly and seems to run fine.
We will see how things go in a couple of weeks when we head to Yellowstone.
Thanks for all the advice that has been posted here, sure does help.
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Old 07-09-2017, 11:05 PM   #160
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Dirt Racer - Glad it is installed, and even more so that the engine ran well for you on your test drive!

Good info sharing on the 'push' vs 'pull'.

We're now over 13K on the FASS ISL combo, and will have over 15K after this years trip. We are 'pull' - and I've detected/encountered zero problems with our install...

Keep us posted on the Yellowstone trip, and how things shake out for you.
Best, and travel safe,
Smitty
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Old 07-10-2017, 12:12 AM   #161
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Dirt Racer,
Glad to hear your up and running. Electric fuel pumps are usually installed in the pushing direction like you installed. I called Fass as well before my install and explained my system. They said as long as the fuel lines and fittings are in good shape with no leaks it won't be a problem pulling to the back. And with the 5/8" fuel lines it should have no problem with fuel flow.

Sorry I didn't post sooner, but visiting with family leaves no rest.

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Old 07-10-2017, 02:24 PM   #162
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This has been the best 12 page conversation ever! I learned a lot about my problems well one of my many issues. I will be doing the mod myself (not a mechanic) so I will retread all the post before moving forward. I will need some advice from y'all as I go. My lift pump is down to 4 psi but still starting my ISC 350, if I let it run it's full 30 sec cycle sometimes I run two cycles. Hope I get to it before it let us down in a park or gas station or takes out the CAPS.
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Old 07-11-2017, 01:23 PM   #163
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can you send me a diagram or directions on what you did with the Fass pump? My 2002 Monaco is having the same problems. Bucking with light load which means fuel starvation.
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Old 07-11-2017, 02:32 PM   #164
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Sorry for the delay, have been touring Florida for a bit trying to see how much sweat I can produce .
Note; the one way check valve is internal to most primary fuel filter housings from the factory, since I opted to remove mine and replaced it with a Davco I had to add an in-line one as the Davco wasn't equipped.
diagram;
Attached Files
File Type: pdf FASS pump.pdf (101.6 KB, 76 views)
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Old 07-12-2017, 01:29 PM   #165
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Quote:
Originally Posted by jleamo1 View Post
Sorry for the delay, have been touring Florida for a bit trying to see how much sweat I can produce .
Note; the one way check valve is internal to most primary fuel filter housings from the factory, since I opted to remove mine and replaced it with a Davco I had to add an in-line one as the Davco wasn't equipped.
diagram;
jleamo1,
Thank you for the diagram. I think I can figure how use it but will probably have to modify it a little to mount it at the fuel tank. I have much more room there and rather the pump would push instead of suck. I will probably buy the Fass with two filter system for $611. I still have to figure out why my Monaco Windsor has three lines going to the engine. A fourth line goes to the generator. I am also looking for a monitor system that uses the on board diagnostics plug. I noticed one last night that uses a laptop and cost around $300. But I can't find it again.

Thank you,

Ed Kimbrough
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Old 07-13-2017, 06:51 AM   #166
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Quote:
Originally Posted by 79cvx20 View Post
jleamo1,
Thank you for the diagram. I think I can figure how use it but will probably have to modify it a little to mount it at the fuel tank. I have much more room there and rather the pump would push instead of suck. I will probably buy the Fass with two filter system for $611. I still have to figure out why my Monaco Windsor has three lines going to the engine. A fourth line goes to the generator. I am also looking for a monitor system that uses the on board diagnostics plug. I noticed one last night that uses a laptop and cost around $300. But I can't find it again.

Thank you,

Ed Kimbrough
The Honda Specialist
Acura Master Technician
ASE Master Technician
682-553-3582
thehondaspecialist@gmail.com
Ed, do you have Aqua Hot? Our Imperial has a 3/4" or -10 hydraulic hose to feed the engine (exits on the drivers side of the tank) and a 1/2" or -8 return to the tank (returns on the passenger side of the tank near the fuel sending unit), I also have 4 small hoses 3/8", feed and return to the generator and feed and return for the Aqua Hot. Feel free to PM me if you need to.
Joe
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Old 07-14-2017, 07:26 AM   #167
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Ed, do you have Aqua Hot? Our Imperial has a 3/4" or -10 hydraulic hose to feed the engine (exits on the drivers side of the tank) and a 1/2" or -8 return to the tank (returns on the passenger side of the tank near the fuel sending unit), I also have 4 small hoses 3/8", feed and return to the generator and feed and return for the Aqua Hot. Feel free to PM me if you need to.
Joe
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Old 08-13-2017, 06:27 PM   #168
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Working on my FASS pump mod, with a fuel pressure gauge install.
Have a question, do you think I should add a check value somewhere between pump and the tank? Now that the old lift pump is out of play and I know it had one on the out put side.
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