whent for a mot every thing else was ok, and the h/c and lamba were ok, just the c/o were ment to be .30 mine are .72 and .55, any ideas how to lower it ? nissan primera 20l slx 95 m reg.
2007-10-06 01:27:26 · 7 answers · asked by markluke1969 1 in Cars & Transportation ➔ Maintenance & Repairs
does it have a catylitic converter? if not then you will have to buy one. fuel treatment good, oil change and new oil filter good also
2007-10-06 08:14:10 · answer #1 · answered by tom a 3 · 0⤊ 0⤋
Carbon Monoxide running slightly rich. Possable causes oil that needs changing dirty air filter. And Oxygen sensors that are tired reading lower voltage the engine control is adding fuel. Try oil change air filter put a tank of Premium fuel in and make sure the engine is fully warmed up. If that does not work e-mail me I will need all four gasses and amounts. And I will reccomend having the engine codes checked in data monotor to see the long and short fuel trim readings and AF ALFA readings on each CYL bank.
2007-10-06 01:37:07 · answer #2 · answered by John Paul 7 · 1⤊ 1⤋
Go and get some fuel treament from a motor factors and give it a good run out.
Thrash the engine to within an inch of it's life and get it retested while still red hot.
I guarentee it will pass.
2007-10-06 04:14:20 · answer #3 · answered by Anonymous · 1⤊ 0⤋
Check the air filter, it may need replacing. The other thing to check is that the positive crank ventilator circuit is clean.
2007-10-08 01:50:41 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Drive it around the block, heat up the engine and give it plenty of revs, then do the test while it's still hot.
2007-10-06 01:32:17 · answer #5 · answered by Anonymous · 0⤊ 1⤋
An oil & filter change.
Then, before the re-test, do as above.
2007-10-06 01:35:58 · answer #6 · answered by Merovingian 6 · 0⤊ 1⤋
Cat is shot
2007-10-06 09:02:43 · answer #7 · answered by ? 7 · 1⤊ 0⤋