Vacuum hose diagram

CHERYLP12

MEMBER
1998 NISSAN SENTRA
130,000 MILES

I have 1998 nissan sentra that has a code P0440 that code evaporative system small leak didn't have time to check before dark when check engine light came on went straight to have code checked first by obd. Need vacuum hose diagram to purge canister and vacuum line to engine

3 Replies

RIVERMIKERAT

MECHANIC
6,110 POSTS

Hello,

Here is the engine and EVAP vacuum line diagrams. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

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Wednesday, October 5th, 2011 AT 4:14 AM

AZDANNO04

MEMBER
285 POSTS

I have a 1998 Sentra ga16de automatic 228,000 miles. The plastic with three spots where the hoses connect to had broken one of the three arms that a hose connects to. Its located behind the driver side rear tire by the black box and where you fill the fuel. I looked at AutoZone and over a hundred for the new part that has three arms for the hoses to connect. I will send a picture next. If that will also cause gas mileage issues?

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Wednesday, December 16th, 2020 AT 12:38 PM

DANNY L

MECHANIC
5,648 POSTS

Hello, I'm Danny.

Having a leak in the evaporative system won't necessarily cause a loss of performance or mileage. It will however turn the check engine light on. With the check engine light on that will prevent you from passing the bi-annual smog check that might be required depending in which sate you live in. The evaporative emission system is in place to keep any gasoline fumes from the fuel tank from entering into the atmosphere. The system basically recycles all the gasoline fumes from the fuel system and sends it back through the engine to be re-burned during the combustion process. Hope this helps and thanks for using 2CarPros.

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Sunday, December 20th, 2020 AT 3:36 PM