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Failed smog do to air injector

What can be done to fix this problem

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Air injector pump? That's not a common thing to go. Any exhaust leak sounds, a little more noisy than usual?

Posted on Mar 23, 2014


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I have a 1994 chevy silverado c1500 v/6 4.3 litre and failed smog for high hc levels st idle . what should i do before i take it back to try and smog? ive already done complete tune up.

as long as you have no check engine light on change oil, air filter. pep boys sells a product called guaranteed to pass add to fuel make sure car is hot when you go back for emission test cold car has high hc levels it also helps to post the hc level you tested at and the limit on your receipt hope this helps

Apr 08, 2016 | Cars & Trucks

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96 chevy blazer air injector smog fail

if that pump is locked up.. goto a salvage yard and get another one.. make sure it turns also..

Dec 20, 2013 | 2003 Nissan 350Z

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Smog problem

check for faulty injectors, faultyoxygen sensor in exhaust. blocked air filter and faulty cat converter They are a source of problems as they are prone to cracking inside and disintergration. Check by thumping the outside of the case and listing for rattles They crack because of the high temp they operate at and when the vehicle is driven through water ie atcurb side. across the road etc the sudden temp change causes them to fail

Jan 27, 2013 | Toyota 4Runner Cars & Trucks

1 Answer

My 2000 Mazda millenia s just failed the smog test do to a malfunction indicator light what do I do

Before you re-test (smog test) ___ I added 3 bottles of injector cleaner in a quarter tank of gas. PASSED!!! Also you can go to a service station and ask them to clean up your injectors; or change the injectors if they are fouled.

May 07, 2012 | 2000 Mazda Millenia

2 Answers

Failed smog test.too rich

sounds like it needs a good tune up and new airfilter will sort it out

Sep 10, 2011 | 1993 Toyota Previa

1 Answer

Went for a smog check; failed with trouble codes P0300, P1441 and P1870? What do the codes indicate. I have a 1996 Camaro RS w/ v-6 3800, auto.

P1441 CHEVROLET - Evaporative Emission (EVAP) System Flow During Non-Purge
P0300 - Cylinder Misfire Detected Random Cylinders
Possible causes- Faulty spark plug 1
- Faulty ignition coils
- Ignition coils harness is open or shorted
- Ignition coils poor electrical connection
- Clogged or faulty fuel injectors
- Injectors harness is open or shorted
- Injectors poor electrical connection
- Improper spark plugs
- Insufficient cylinders compression
- Incorrect fuel pressure
- Intake air leak
if you noticed that the closes relation those two have to each other has to do with a leak possible vacuum leak. look for hoses or grommets that are very soft, loose, cut or disconnected. the other code P1870 pertains to a transmission component slipping you should not need that for a smog check to pass

Aug 30, 2011 | Chevrolet Camaro Cars & Trucks

1 Answer

Wont pass smog. 1986 e.f.i. new mufler to tip.

check the timing it may be off also clean throtlebody out and put a injector cleaner in the tank.goodluck.

Jan 21, 2011 | 1987 Ford Ranger

1 Answer

Fault codes ''failed smog check''

from experience the system is to lean not getting enough gas which causes lost of power pinging rough idoling and it clogs your fuel injectors which will cause failed smog test good luck

Jul 07, 2009 | 1999 Mercury Cougar

2 Answers

92 mustang backfiring

when you changed the injectors did you calibrate the mass air for 24lbs? and also did you change the computer to a cobra computer...or the computer that calls for 24 lbs injectors? if not that is 100% your problem.

Aug 28, 2008 | 1992 Ford Mustang

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