Question about Nissan Pickup

1 Answer

My 85 nissan pick up wont pass smog cause pollution number is to high. could it be vacuum hose leak?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Master:

    An expert who has achieved Level 3.

  • Master
  • 358 Answers

Where do you live? Some locations (states/provinces, counties/parishes, and cities provide a waiver for vehicles older than 25 years. Check out your area's regulations. You may be able to avoid the emissions test completely. Good luck.

Posted on Oct 10, 2013

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

GM Elec
  • 1000 Answers

SOURCE: need a vacuum hose diagram for for an '88 nissan

Below is the vacuum diagram for your Nissan.
Good luck.
Regards,

FIG : Fig. 2: CLOSE X printdiagram_txt.gif print_icon.gif
0900c1528018d188.gif

Posted on May 09, 2009

  • 636 Answers

SOURCE: need to see a diagram to connect vacuum hoses so

Try this site , it is called manuals online

Posted on Jul 26, 2009

nvannoy
  • 234 Answers

SOURCE: Having a problem passing a smog test on 1996 Toyota 4Runner SR5 V

NOX is produced when cylinder temperatures exceed 2500 deg. The systems in place to reduce NOX are EGR and the catalytic converter.
If the number is only slightly higher than avg then I would suggest the EGR, make sure that any vacuum lines are attached and that the diaphragm moves freely, be sure not to damage the rubber inside the EGR.
Retake smog test, if numbers still out of range replace the cat.

Posted on Jan 12, 2010

nvannoy
  • 234 Answers

SOURCE: 1992 dodge stealth failed smog test with high NOx

NOX is produced when cylinder temperatures exceed 2500 f.
Your vehicle has 2 ways to directly reduce NOX, EGR system, and catalytic converter, and also the cooling system indirectly.
Take a look at the EGR system, vacuum lines, pipes, and make sure the diaphragm moves. Disconnect the vacuum line, then push on the diaphragm and plug the hole (from vacuum line) when you release the diaphragm there should be vacuum. Also you may want to take it out and give the EGR passages and EGR valve a good cleaning, with some type of carbon cleaner like carb cleaner.

Posted on Mar 10, 2010

jsmes1027
  • 749 Answers

SOURCE: high nox fail smog test any remedies? 99

NOX is created when the internal combustion temperature gets to high.The egr system uses burnt exhaust gases to line to cylinder walls.The purpose of this is decrease internal combustion temperature therefore reducing the amount of NOX created.Would look to a possible egr malfunction usually they will trigger the check engine light but not always.The 4.3L has been known to have issues with carbon buil up in the egr and the egr pintle not open and closing properly.

Posted on Jun 07, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I failed smog test , it failed no(ppm) what can i do to get it to pass? it runs fine a there was vaccum hoese that had a hole in it and it was replaced, and it runs smooth now. i put in 91 oct. and took...


NOX is the pollutant that caused the failure, is what I gather from your post. The high NOX could be a lean fuel condition, high operating temp of the engine, bad EGR valve, excess carbon buildup in the engine. I would check EGR valve since you have checked and repaired a vacuum leak.

Jul 18, 2017 | Cars & Trucks

1 Answer

My 2000 Nissan Frontier won't pass emissions for an unknown reason. It isn't coming up with any codes that would explain this. I had the mass air flow sensor replaced about 2 months ago. The check engine...


Well what kind of numbers are they getting from the exhaust on the smog machine? Are the hydrocarbon numbers close to passing level or are they at gross polluter level? There are a lot of factors involved with high emission numbers. Sometimes just doing a basic tune-up can help clean up the numbers. Things like making sure the air filter is clean. Changing the fuel filter,plug wires, and spark plugs can help. Is the catalytic converter ok? Could have a bad batch of gas also. You could try running some fuel injection cleaner in the tank to help clean up the numbers. And the O2 sensor can cause problems with the emissions. It would be hard to pinpoint the exact problem with out a physical inspection of the vehicle.

Nov 26, 2009 | 2000 Nissan Frontier

1 Answer

85 Pontiac Fiero - passing a smog testing


Could be vacuum or O2 sensor maybe using cheap fuel.

Aug 03, 2009 | 1985 Pontiac Fiero

2 Answers

My 1990 chevy lumina just started making a noise when aceleratin


change fuel filter.then check fuel pressure.if you got TBI FUEL INJECTION PRESSURE SHOULD BE 26-32 PSI. IF YOU GOT MFI FUEL INJECTION PRESSURE SHOULD BE 40-47 PSI.if all is good .have car scan check the egr valve.map sensor. coolant sensor.if any one of those are bad it causes rich fuel mixture.that will cause you to fail smog test.also replace plugs and wires.if they are faulty they will misfire cause unburn fuel to come out exhaust.also check for for intake leaks check all vacuum hoses.

Jun 22, 2009 | 1990 Chevrolet Lumina

2 Answers

95 caprice wont pass california smog test


REPLACE OXIGEN SENSOR AND CHECK GAS RECIRCULATED VALVE AND VACUUM LINES

Jun 04, 2009 | 1995 Chevrolet Caprice Classic

1 Answer

85 volvo dl fuel evaporative control functional (failed) @ smog check


replace the pvc valve and have the egr valve replace.make sure the vacuum hoses connect to egr valve and pvc replace.change air filter.all those things will cause high emission if not working properly.cause you to fail smog test.

May 31, 2009 | 1985 Volvo DL

1 Answer

92 chevy truck 5.7 idle revs up and down high emissions


sounds like a vacuum leak check hoses and manifold

Mar 21, 2009 | 1991 GMC K2500

1 Answer

1991 Camry running rich


check for vacuum leaks especially around the intake manifold gasket. Although the engine appears to be running rich, it could also be misfiring due to being too lean in one cylinder. When the cylinder doesn't fire the charge, it goes into the exhaust completely unburned and looks like a rich running condition due to the unburned fuel. If it is a vacuum leak causing the problem, the engine will run fine at road speeds but misfire at idle and not pass smog.

Jan 30, 2009 | 1991 Toyota Camry

1 Answer

Wont smog


If the car idle on high rpm check if when you will step on the gas pedal over 2500 3000 rpm the car will start shaking and the will die if thats happening then check your mass air flo sensor ,or if there is no air leak that avoid the mass air flo sensor

Jan 21, 2009 | 1991 Nissan 300ZX

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

106 people viewed this question

Ask a Question

Usually answered in minutes!

Top Nissan Experts

yadayada
yadayada

Level 3 Expert

75051 Answers

Phil Lovisek
Phil Lovisek

Level 3 Expert

705 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Are you a Nissan Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...