04-08-2017, 10:36 AM
fumes, as in un-burned exhaust? smell., not pure gasoline fumes from the bad tank vents?
NO CAT CARS>
is normal cold, all engine run rich cold, the cat burns up the excess (called HC fuel) fumes turning them to CO and CO2 , both you cant smell, first is deadly.
cat missing you sell un-burned hydrocarbons , black smoke is what it is... and stinks bad, and is toxic, the CO carbon monoxide is a man killer. never run car in garage. like that...
a hot engine will smells bad, all will a tiny bit (no cat), sounds like the exhaust pipes missing from header to left rear bumper.
ok say hot engine and it's so bad you see that black smoke, well that is wrong, dead wrong.
causes are simple. (mostly but list is not long)
1: engine not at 180f, or more, not really hot. (thermostat missing/bad or those silly fail safe STATS that latch open)
2: ECT reads wrong, not 180f. but lower.
3: map vacuum missing to map.. maps almost never fail but the hose does 3 ways, fell off, clogged or cracked.
4: fuel pressure not at spec but way more, like 50 psi no 30ish.
5: leaking injector. (bad ecu, if unlucky)
exhaust leaks near that new 02 will make it stink too, rich.
unplug the o2, smell better?
NO CAT CARS>
is normal cold, all engine run rich cold, the cat burns up the excess (called HC fuel) fumes turning them to CO and CO2 , both you cant smell, first is deadly.
cat missing you sell un-burned hydrocarbons , black smoke is what it is... and stinks bad, and is toxic, the CO carbon monoxide is a man killer. never run car in garage. like that...
a hot engine will smells bad, all will a tiny bit (no cat), sounds like the exhaust pipes missing from header to left rear bumper.
ok say hot engine and it's so bad you see that black smoke, well that is wrong, dead wrong.
causes are simple. (mostly but list is not long)
1: engine not at 180f, or more, not really hot. (thermostat missing/bad or those silly fail safe STATS that latch open)
2: ECT reads wrong, not 180f. but lower.
3: map vacuum missing to map.. maps almost never fail but the hose does 3 ways, fell off, clogged or cracked.
4: fuel pressure not at spec but way more, like 50 psi no 30ish.
5: leaking injector. (bad ecu, if unlucky)
exhaust leaks near that new 02 will make it stink too, rich.
unplug the o2, smell better?
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