woohooooo! 4x failed the emissions!! yes i rock! lets see whats been done
new muffler
new cat
2 bottles of seafoamman
new plugs wires
new pcv
cleaned out egr and its working ( did vac test)
timing is right
oil change

man this truck runner sooooooooo good now gas milage up lots of power for a 3.slow

im thinking it might end up with some 9mm holes

 

Im thinking their tester is busted..

 

me too! MY SCORE WENT UPPPPPPPPPPP!

 

call your state testing centre and get them to recommend another shop. i had problems with mine, turned out the egr was non-functional. once that was changed, passed without issue.

good luck.

lee

 

What, specifically (CO2, etc), is failing and what's the value, measured and max. allowed ?



Fred

 

Check your plugs and see what color they are. If they are black then you're truck is running rich.

My next suspected culprit would be water temp. sensor, not the sensor for the dash gauge. If it's busted your computer will always run rich like it's still in warm up mode.

 

no is high 956 is max im at 1149 plugs look great just changed state doesnt tell ya to go anywher i can do it all myself if i like EGR is working from what i can tell hooked vac line to it and engine tries to stall

 

im gonna do one last thing before i REPLACE the egr im gonna clean it full take off and clean hopefully that does it

 

the NO was high on mine and it turned out to be a combo of a plugged pcv valve and the timing being set out of wack (it had been tampered with by the shop where I went for testing [they were shut down I heard]) I'd get a different shop to check everything again if I were you...

 

before u go crazy, i would check the mass air flo censor, if it is the least bit dirty it would fail emission. i failed three times at that was the cause. simply cleaned with carb cleaner. good luck.

 

Now why in the world would you change from 5W30 to 10W30 ??




Fred

 

The 5w30 was running a little thin I had to add about a qrt. between changes I put in the 10w30 and it was'nt loosing as much... now that I'm running the Engine Restorer stuff at each change as well I might tyr the 5w30 again but this engine has 315K on it and the thicker oil might still be better... we'll see what happens...

 

The 3.0 doesn't have a MAF. If you're talking about the VAFM, what is there to clean, the swinging flap door?

 

wooohooo failed yet again!! and my reading is higher still 1203 956 passes
new plugs/wires
new cat and muffler
cleaned egr
tested egr with vacuum working
new pvc
oil change
this is all within 2 weeks
AGGGGGGGGGGGGGGGGGGG
what the hell is next???

 

i mean seriously im reading every blog / thread i can find im fixing everything i can anyone????

 

move ....No testing where I live
j/k

 

Have you done a compression test to see if it is way high?

 

You must be burning oil. Either valves or rings.

 

do you warm it up (like a 15 mile day drive 1st)
and
you can add some alchohol to the fuel (or something ) to make it burn really clean. maybe the octane of fuel is too high or too poor quality.

either that, or put some holes in the top of the exhaust pipe

 

have I missed the suggestion of O2 sensor(s) ?