PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG!

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PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG!

04-13-2025, (Subject: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! )

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RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG!

(04-13-2025 )walterk Wrote: Continuing on this subject....
i am having a fuel mileage drop from 8.0 mpg to 7.3, albeit over a 3 year period, but I still don't like it.
I am following some of the tests recommended and this one caught my eye.

"* Has anyone bothered to pressurize the CAC and check it for leaks? -- How about pressurizing the entire engine between the intake filter and the back of the turbo and checking it for leaks as well?"
I have a tool to test CAC, but how do you pressurize the engine between the intake air filter and the back turbo? Any clever ways you guys have to make it easy and practical? Plug it up with rags...?Thanks in advance for your help.

using block plates or pipe plugs...
ref: https://rawze.com/forums/showthread.php?...21#pid8321

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Messages In This Thread

PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - VNL670 - 06-25-2018,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - Hammerhead - 06-26-2018,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - VNL670 - 07-01-2018,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - DLC - 06-26-2018,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - VNL670 - 07-01-2018,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - Rawze - 06-26-2018,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - VNL670 - 07-01-2018,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - walterk - 04-13-2025,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - Rawze - 04-13-2025

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - snailexpress - 06-26-2018,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - VNL670 - 07-01-2018,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - VNL670 - 07-01-2018,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - hhow55 - 07-01-2018,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - VNL670 - 07-02-2018,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - smorgan87 - 07-03-2018,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - VNL670 - 07-05-2018,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - VNL670 - 07-05-2018,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - VNL670 - 07-06-2018,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - smorgan87 - 07-06-2018,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - smorgan87 - 07-06-2018,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - VNL670 - 07-06-2018,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - ammjay61 - 01-21-2020,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - walterk - 04-15-2025,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - walterk - 04-16-2025,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - mikkhh - 04-17-2025,

RE: PLEASE help me! VNL670 with an ISX CM2350 4.4 MPG! - Rawze - 04-17-2025,

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