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Old February 6th, 2018, 05:21   #1
fouillard13
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Default Cabin stinks/tastes like diesel fumes after idiling to warm up

I let my car idle for a few minutes sometimes in these cold mornings. When I get into my car it reeks like diesel fumes so bad that I can taste them. Why is this?? Is it because my heater is cranked and Iím sucking up my fumes from outside?

I once had this problem while driving. Exhaust fumes getting into the cab bad. Turns out it was my egr hose that had broken. Itís since been deleted and blocked off.
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Old February 6th, 2018, 05:28   #2
oilhammer
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Don't let your car sit and idle, first of all.

Second, you can turn on the recirc and not allow any outside air into the car, if you insist on letting the car idle.

It warms up much faster (especially with no EGR) if you just drive the car off right away.

You may also want to check for exhaust leaks anywhere ahead of the tail pipe.

My Golf's exhaust dumps under the car.... but I never sit and idle, so I never smell anything. I am moving after about 5 seconds of the engine running. As long as it takes me to buckle my seat belt, essentially.
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Old February 6th, 2018, 06:25   #3
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Did you remove your cat?
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Old February 6th, 2018, 07:07   #4
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what oil hammer said*
First off, it does not reek, it smells good, and much better than gas exhaust fumes.

Idle is bad for the turbo and a complete waste of fuel. if you want a warm car, get a frost heater or something.

Either you have a leaking exhaust, probably at the downpipe, but the EGR system and cooler can also be suspect.
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Old February 6th, 2018, 11:02   #5
fouillard13
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ive got a frost heater, but it cant be plugged in sometimes.

not too sure about the cat. I believe everything is stock.

ive gotta let it idle on these -20C mornings. I dont think you guys get Calgary winters. even -10 and -15C its got rough starts. it rattles and vibrates and sounds like rocks in a pop can for 20-30 seconds. the idle is high or up and down, it barely turns over with 0w40 t6 oil and a 1 year old VW battery in those temps. no way im putting my seatbelt on and driving away. doesnt it at least take 5~ seconds for oil to reach the top end in those temps? the clutch and clutch fluids are stiff, the lights inside are dim and slow. its gotta idle for a few mins some mornings. those are the stinky mornings.

now I know what to check for/get the mechanic to check for!
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Old February 6th, 2018, 11:07   #6
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I have already experienced a - 7 F cold start this winter, I think that is about -20 C ? And I started it up and drove off right away, same as always. It was cranky to start, but as soon as it was running I was off and headed to work.

5w40 oil, Volkswagen (Enertec) battery, no heater, sitting outside, 535k miles. I was doing over 80 MPH within 2 minutes of the engine starting. Same as always. *shrug*
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Old February 6th, 2018, 11:12   #7
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Volkswagen (Enertec) battery
For some reason I thought you were an Interstate guy?

How is your Enertec holding up? I sure didn't like mine.
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Old February 6th, 2018, 11:14   #8
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To keep it on track, I started my ALH at -37F and was driving within a minute. Yeah, it sounds like a tin can full of rocks for 10 seconds but it smoothed out.

I sure didn't beat on it right away though.
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Old February 6th, 2018, 11:19   #9
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After all the work done on my TDI, I have to get moving right away. The car stink up the neighbourhood. It gets a little better when it is warm.

I am going to look for some tweaks to cleanup the smell a bit. Perhaps in the IQ or IP timing? Maybe a fuel additive that smells like flowers or french fries.
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Old February 6th, 2018, 11:43   #10
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Quote:
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For some reason I thought you were an Interstate guy?
How is your Enertec holding up? I sure didn't like mine.

Interstate seems to have suffered in longevity in the last few years, and their prices just kept going up. So we switched our batteries around a bit. Most VAG products get OEM or the AC-Delco branded whatever-it-is (they just put their sticker on them).

The Enertec in my Golf is currently three years old, doing OK but as a general rule if I know it is going to be bitter cold and I know it is going to sit for a few days (weekend) I will put a charger on it overnight just in case.

One of my Passats still has the old Interstate in it, I think it is going on five years old I think. And it sits (the gasser) most of the time, sometimes for a couple weeks. The diesel Passat has an older OEM battery in it, I think it is probably 7+ years old, it is only the second battery since the car left the factory.
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Old February 6th, 2018, 12:38   #11
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I had the same problem and discovered that my lower EGR pipe was broken. Since the intake for cabin air is right near there it'll pull the fumes in. Like others have said turning on recirc will help and simply driving off not too long after starting will help as well until you can check the EGR pipe and possible other culprits.
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Old February 6th, 2018, 13:09   #12
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the lower EGR pipe has been fully blocked off.

plus, if that tube was broke, which mind had been, wouldnt you lost all boost/turbo, like mine did when it broke?

very very interesting how you guys start cold at -30 and just drive off. everyone here, my whole life, has idled, and will argue you till it turns into a fight, that you need to let them idle for AT LEAST 10 minutes haha. im a 1-2 minute guy but I baby my vw. especially clearing snow... youre not telling me that you clear snow, scrape the windshield, THEN start the car and take off?!

its funny, all this mention of cold start driving and no one mentions of max RPM when taking off cold like that? I know you guys have your magic numbers... what are they? surely you arent doing 3500rpm shifts.
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Old February 6th, 2018, 13:11   #13
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Quote:
Originally Posted by PB_NB View Post
I am going to look for some tweaks to cleanup the smell a bit. Perhaps in the IQ or IP timing? Maybe a fuel additive that smells like flowers or french fries.
my buddies have two stroke oil for their dirtbikes that smells like strawberry!!

its alright, but im so sick of it. its been around for like 10 years.
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Old February 6th, 2018, 13:40   #14
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Interstate seems to have suffered in longevity in the last few years
Our Tahoe had an Interstate. Our back door doesn't always shut right and it leaves the dome light on. I swear that thing was drained flat at least 10 times in the last 5 years and it survived... until the recent cold snap.

I decided to go a different route when I found out how much the new Interstate would cost.
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Old February 6th, 2018, 14:15   #15
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Quote:
Originally Posted by fouillard13 View Post
ive got a frost heater, but it cant be plugged in sometimes.

not too sure about the cat. I believe everything is stock.

ive gotta let it idle on these -20C mornings. I dont think you guys get Calgary winters. even -10 and -15C its got rough starts. it rattles and vibrates and sounds like rocks in a pop can for 20-30 seconds. the idle is high or up and down, it barely turns over with 0w40 t6 oil and a 1 year old VW battery in those temps. no way im putting my seatbelt on and driving away. doesnt it at least take 5~ seconds for oil to reach the top end in those temps? the clutch and clutch fluids are stiff, the lights inside are dim and slow. its gotta idle for a few mins some mornings. those are the stinky mornings.

now I know what to check for/get the mechanic to check for!
no, not if your oil is fresh. i lived in northern utah, -45F in February at 4am when i had to go to work. I know cold bro! If your brake /clutch fluid is siff when its cold, change it. your supposed to change that fluid every 2 years regardless of miles. You need to upgrade your grounds and wires from the alternator. Do a big 3 wire kit. You will tanks me. Letting it idle for 30 seconds is best. no reason otherwise.
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