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Topic: ISC/L's with CAPS - Adding fuel pump to aid Lift Pump? (Read 639 times) previous topic - next topic
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ISC/L's with CAPS - Adding fuel pump to aid Lift Pump?

Yahoo Message Number: 81854
Hi - Still research CAPS, and things that can be done to reduce the risk of CAPS related Fuel Delivery failures. If I understood a post I read correctly on another board, sometimes the Lift Pump will fail, due to fuel starvation (Pump keeps running, but not enough fuel flow so it stops lubrication which can cause failure. As the fuel is not delivered evenly from the Lift Pump, then the Injection Pump part of the CAPS also may be impacted. (Note: This is a question, as much as it is an attempted summary. As I sure could have miss understood what was being explained on the other boards:)!))
So, my question, have any of you added an extra fuel pump, in front of the Lift Pump, to aid/provide more positive fuel flow? The AirDog is one such pump.

Thanks,
Smitty

04 Allure 31017, ISL370 CAPS (Suprised me! Thought it was Common Rail...)
04 Allure Sold to a nice new owner! Now enjoying a 07 Magna Rembrandt 45' ISX600 #6775
"We're ONDROAD for THEJRNY!" (Toad and Coach license plates, say Hi if you see us!)

Re: ISC/L's with CAPS - Adding fuel pump to aid Lift Pump?

Reply #1 –
Yahoo Message Number: 81855
Smitty, When the engine starts the "Lift Pump" shuts off within 30 seconds to 1 minute.

Thanks, Mike 03 Allure 1st Ave. #30898 ISL 370

Re: ISC/L's with CAPS - Adding fuel pump to aid Lift Pump?

Reply #2 –
Yahoo Message Number: 81861
Mike - Thank you for your polite response:)!
I went back to track down how I had got so far off the beaten path, and found that the thead I had been reading about ISC's CAPS, had shifted in mid stream over to the older ISB's.
I also found a thread on a Heavy Diesel Mechanics Board, that claimed the last generation of CAPS had many fixes and refinements from the earlier models. Yes, many more moving pieces then the next generation Common Rail, but it was good to read their opinion that the last cycle of CAPS were improved. As my engine was made in July of 2003, I assume it was in this later generation. Suppose a call to Cummnis with the engine serial would confirm this.
Thanks again for the response and setting me straight. I'm sure not looking for problems, but if their are small changes or aftermarket items that I can do to aid the health of the CAPS - I don't mind doing this...

Smitty

04 Allure 31017
04 Allure Sold to a nice new owner! Now enjoying a 07 Magna Rembrandt 45' ISX600 #6775
"We're ONDROAD for THEJRNY!" (Toad and Coach license plates, say Hi if you see us!)

Re: ISC/L's with CAPS - Adding fuel pump to aid Lift Pump?

Reply #3 –
Yahoo Message Number: 81865
The only issue I have had with my ISL was at 54,000 miles. The accumulator section of the injection

pump ceramic pistons were defective allowing diesel to enter the lubricating oil, dropping my oil

pressure. It was an easy fix once the part was delivered to the Farmington, NM Cummins shop. I never had any starting or power issues, but my engine brake wasn't very effective in the mountains of

Colorado, which became a real issue.
TWI 2004 Intrigue 11731

Original Message:
-----------------

From: GSmith77_7 gsmith77_7@... Date: Tue, 21 Aug 2012 03:57:21 -0000 To: Country-Coach-Owners@yahoogroups.com Subject: [Country-Coach-Owners] Re: ISC/L's with CAPS - Adding fuel pump to aid Lift Pump?

Mike - Thank you for your polite response:)!
I went back to track down how I had got so far off the beaten path, and found that the thead I had been

reading about ISC's CAPS, had shifted in mid stream over to the older ISB's.

I also found a thread on a Heavy Diesel Mechanics Board, that claimed the last generation of CAPS had

many fixes and refinements from the earlier models. Yes, many more moving pieces then the next

generation Common Rail, but it was good to read their opinion that the last cycle of CAPS were

improved. As my engine was made in July of 2003, I assume it was in this later generation. Suppose a

call to Cummnis with the engine serial would confirm this.
Thanks again for the response and setting me straight. I'm sure not looking for problems, but if their

are small changes or aftermarket items that I can do to aid the health of the CAPS - I don't mind doing
this...

Smitty

04 Allure 31017

Quote from: allure012000
>

Smitty, When the engine starts the "Lift Pump" shuts off within 30
seconds to 1 minute.

Quote
>

Thanks, Mike 03 Allure 1st Ave. #30898 ISL 370 >

> -