2001 sonama P0440

[luxeryvic]

same code yeah and time dont really matter i just wanna save money i dont smell any fuel but ill check anyways and how do you check the vent valve and plurge solenoid and pressure sensor??? do i look at hoses first or that first the purge solenoid has been changed once already i looked in the service records if that means anything

[MT-2500]

Originally Posted by luxeryvic

same code yeah and time dont really matter i just wanna save money i dont smell any fuel but ill check anyways and how do you check the vent valve and plurge solenoid and pressure sensor??? do i look at hoses first or that first the purge solenoid has been changed once already i looked in the service records if that means anything

Doe the system have and hold vacuum?
If you have a vacuum leak on the system you need to look for and check that first.
Testing requires good equipment and repair knowledge.
A lot of the testing requires a good engine capable scanner to start with.
Also a good repair flow chart for that code.
Which can be found in a factory repair manual or a All Data DIY sub.
http://www.alldata.com/products/diy/index.html

If you do not have them better find a good repair shop that does.

[luxeryvic]

how do you test for vaccum? and i dont have any of that stuff just a matco code reader so your saying im best off to take it to a shop with a smoke machine and other testers? wat if its somethin simple like a hose should i not drop the canister and check that?

[MT-2500]

Originally Posted by luxeryvic

how do you test for vaccum? and i dont have any of that stuff just a matco code reader so your saying im best off to take it to a shop with a smoke machine and other testers? wat if its somethin simple like a hose should i not drop the canister and check that?

To test for vacuum hook up a vacuum gauge to it and see what you got.

Let us know if it has vacuum and if vacuum holds.

[luxeryvic]

where do i hook the vacuum gauge up to? and wat do they look like i know i dont have one but maybe one of the mechanics i know have one i can borrow

[MT-2500]

You will need to hook it up any place on a line or fitting that should tank vacuum on it.

If you do not know what one looks like you had better get one of the mechanics to look at it.

Or Better yet get this for your truck.
http://www.alldata.com/products/diy/index.html

[luxeryvic]

ok i got a vaccum guage i know wat you mean know so a line off the canister or under the hood somewhere where is best?

[MT-2500]

Originally Posted by luxeryvic

ok i got a vaccum guage i know wat you mean know so a line off the canister or under the hood somewhere where is best?

Any place on the evpa system that should have tank vacuum on it that you can hook up the gauge to.
Get a all data sub and look for the evpa tank vacuum system and lines.

[luxeryvic]

i got the diagram in the manual i have ill hook the tester up this weekend and check how much vaccum should i have if there is no leaks?

[MT-2500]

Originally Posted by luxeryvic

i got the diagram in the manual i have ill hook the tester up this weekend and check how much vaccum should i have if there is no leaks?

I do not think it should range over 4.5-5 in vacuum at the most.

Let us know what yiou get and if any leaks.

[old_master]

EVAP vacuum is measured in inches of water, not mercury, BIG difference. Inches of water is far more accurate, 1 inch of mercury equals approximately 13.595 inches of water. Like MT said, better have a qualified technician look at it.

[luxeryvic]

ive left it for a while but starting to notice a fuel smell when i turn corners and stop??? wat does this mean