Gas smell from exhaust?
Originally Posted by DaveB
Your G's cold start rev's were at 2000rpms? My 03 might see 1,500rpms for about 3 seconds on a really cold start, but after that it hangs out in the 900-1000rpm range until the engine warms a bit. I've heard of other G owners reporting extended high rpm warm ups. It must be a 6MT thing because a 2000rpm extended cold start with a 5AT would mean the car would tkae off hard without the brake.
As for the Altima, yeah, they're stinkers. We had a 94 and 97. With as bad as our Subaru stinks, I thought for sure the O2 sensors were crapped out, but my datalogger says all is good. It tested fine for Georgia emissions too about 6 months back. It still gets 23mpg in the city and 29mpg on the highway.
As for the Altima, yeah, they're stinkers. We had a 94 and 97. With as bad as our Subaru stinks, I thought for sure the O2 sensors were crapped out, but my datalogger says all is good. It tested fine for Georgia emissions too about 6 months back. It still gets 23mpg in the city and 29mpg on the highway.
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From: Peachtree City, GA
My 06' 6MT at a cold start goes all the way to 2300 but only for maybe 3 seconds then slowly declines from 2100 - 1400 - 1200 - 1000 as it warms up.
Last edited by jiminy4DR6MT; Dec 12, 2006 at 09:22 PM.
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guys am having badddd fuel odor in the car whenever i hit the pedal or full throttle i smell really bad + relatively low mileage and the exhaust tips r black indicating rich a/f mixture, my g35 got jwt intake gutted cats power pulleys spacer and all other stock any ideas??
Yes I am sure, I have art pipes which are test pipes and gutted cats/test pipes are essentially the same thing. I have black tips too. The smell is from your gutted cats. Like I said, try the random question thread and they will all say the same thing.
One of the purposes of catalytic converters is to reduce hydrocarbon emissions. Take off the cats and you'll get a fuel odor smell.
Do you smell "unburnt raw fuel" or that smell you get when someone removes the cat (real stink). If it's gas, your cat is dead. If your car had a miss fire and sent raw gas to the cat, it will destroy it in short order (should have been a code thrown). If it just stinks, you may even have a cat or someone knocked the catalyst out of the unit and is running no cat. (is it loud?).
One last thing, does it stink while running after you have been driving for, say, a half hour or so, that gives the cat time to get up to proper temp (should take about 5 to 8 minutes)?
One last thing, does it stink while running after you have been driving for, say, a half hour or so, that gives the cat time to get up to proper temp (should take about 5 to 8 minutes)?
All cars do this on a cold start because the air/fuel ratio is very rich prior to the engine warming up. Some cars are worse than others. My wife's 98 Legacy GT is horrible on a cold start. I open the garage and back out immediately to keep the fumes from building in the garage.
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Do you smell "unburnt raw fuel" or that smell you get when someone removes the cat (real stink). If it's gas, your cat is dead. If your car had a miss fire and sent raw gas to the cat, it will destroy it in short order (should have been a code thrown). If it just stinks, you may even have a cat or someone knocked the catalyst out of the unit and is running no cat. (is it loud?).
One last thing, does it stink while running after you have been driving for, say, a half hour or so, that gives the cat time to get up to proper temp (should take about 5 to 8 minutes)?
One last thing, does it stink while running after you have been driving for, say, a half hour or so, that gives the cat time to get up to proper temp (should take about 5 to 8 minutes)?
man my cars smells like unburnt fuel,u can smell it inside out if i stand next to the exhaust out i can smell it and i can smell it inside the car and ya i have gutted cats,took em 6 months ago and he gutted them without removing them...so basically they r like test pipes but narrower on a certain point inside the cat cuz the designof stocks cats is equal all through the the cat....when i punch the pedal the smell gets more especially on highways when im on low revs inside the city i dont smell it a lot but its still there...am afraid that theirs a leak somewhere...or it may be too rich a/f thnx guys appreciate it
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hey dave, hfcs would just the same right?if they would solve the problem i can get a pair..wht do u think?
Highest I've seen it go is 1800 or a little under.
And yeah this is in Winnipeg winters.
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