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Old 11-24-2013, 05:07 PM   #11
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Quote:
Originally Posted by amc49 View Post
TKG26 means carbon MONOXIDE of course.

You should get headache first from CO, ignoring it is the mistake. BTDT.............fix your valve cover gasket-you cannot retighten them to seal better since the seal is achieved from a 'hit solid and done' thing instead of a 'gets tighter as you tighten it up' thing. The gasket will be cooked hard and they do not reshape then to seal better when you tighten more anyway. In short retightening may have bought you a week and certainly brought you closer to broken off bolts, which is what retightening generally does. You need a new valve cover gasket. The bottom of windshield seal you worked on was never intended to be positively gastight either and will go back to leaking as well. The base of windshield is a low pressure area, most air comes from outside but the draft there easily pulls any fumes that seep up from back of hood.
Points will taken. So far so good. I will keep an eye on eye on the valve cover for any leaks. If it leaks I will replace. Thanks for your input. Later
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Old 11-24-2013, 06:54 PM   #12
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LoL my bad sorry... I work for a gas utility ... I correct people all the time about CO being carbon monoxide not carbon dioxide!

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Old 11-25-2013, 12:23 AM   #13
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Don't feel bad, mine just started doing same thing today, got out after smelling it and looked and sure enough leaking to drip on manifold. Hoping to delay it enough to make it to timing belt time.

Worked as a printer once where they also bound finished books using hot melt plastic glue for perfect binding. Someone left it on one night while pressroom on other side of plant working late and 2-3 guys started complaining of the headaches, odd at first until one dropped in a faint. Then the other started throwing up. Not funny anymore. More complaining by then, I started looking around plant and found the glue pot burning the plastic to a crisp right under a central air intake to put it all over plant. Ended up calling Fire Dept. and the CO readings were off the chart. The one guy had to go to hospital for a day. Could'a been a bad day there.
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Old 11-28-2013, 01:14 PM   #14
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Quote:
Originally Posted by Edgenet View Post
Fumes making me sick when Heater fan on.

Ever since I bought this car I seem to be fixing stuff on a daily bases. Ok back to this serious problem when I bought the car a month ago the fumes were unbelievable when I turned the heater fan on, looked under the hood and smoke was rising from the front of the engine. The valve cover gasket was leaking oil and burning off by the catalytic converter. I tighten all the valve cover bolts and cleaned the engine and catalytic and the smoking stopped.

The problem I am having now is that the smell of the engine is coming in the interior when the heater is on. I checked the gaskets at the rear of the hood and they seem to be ok. The cover over the air intake seems to be ok it appears that no one removed it to install an interior filter. ( I trried removing the cover on another 02 Focus and it was a horror of a jop and I ended-up with water leaks so I am not touching this cover.)

So then where are the fumes coming in from. I thought the air is pulled in from the base of the windshield and the air air should be outside air.
Hi Edgenet,

This concerns me; please make an appointment at your local dealership at your earliest convenience to get this checked out. Let me know what the dealer says; I hope it gets resolved soon!

Bianca
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Old 10-18-2016, 07:25 PM   #15
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Originally Posted by my_beautious_ZX3 View Post
If it's exhaust that you're smelling, it could be a bad manifold gasket or flange/hole further down the line. Sometimes, an exhaust leak near the engine can be heard as a soft "pfffffft-pfffffft" sound.
My 2004 2.3L PZEV is having its share of ~300K-related issues. Most recently, P0128 (not yet resolved), and the last few days, smell of burning oil in the passenger compartment. I already replaced the valve cover gasket a few weeks ago, and I don't see any new oil leaking. And last week I noticed a sound, like a cross between a whistle and a hiss, behind the engine somewhere, near the firewall, higher pitched with increased engine RPMs. Could I have an exhaust leak?

Honestly, I'm not sure if I'm smelling oil or exhaust. At first, I thought exhaust, but my husband thought it smelled like burning oil. And I think the oil level is lower than when I did an oil change after changing the valve cover gasket, but I checked it with my car on a slope.

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Old 10-18-2016, 07:59 PM   #16
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If you had enough of a leak to show on the dipstick it would also show on the ground.

If you look at the exh. manifold on the back of hte head and see burnt oil on it, you found your odor source.

DO check if the hood seal between engine compartment and air intake is even still there. Bet the extra foam seals at each end between that & fender are long gone. First part is the most important.
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Old 10-19-2016, 04:00 PM   #17
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DO check if the hood seal between engine compartment and air intake is even still there. Bet the extra foam seals at each end between that & fender are long gone. First part is the most important.
Thanks, Sailor. I don't even know where to look to check this. Do you mean between the engine compartment and an air intake into the cabin? Do you have a photo or diagram? I have the 2.3L Duratec (PZEV) engine.

Oh, you mean that vent grill just below the windshield? I'll check. The two foam pieces, one at each end, *are* still there. I know because every once a while I see one or both partially dislodged and I re-align them.

BTW, I have a new crack in my windshield, on the driver side. Do you think that could be letting in an exhaust/burnt oil smell?

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Old 10-19-2016, 05:18 PM   #18
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Yes, those are the pieces that tend to disappear, line up with the foam seal in front of the plastic cowl sections under the windshield.

That looks like a door seal, helps keep engine compartment air from exiting to the air intake area or over the windshield.

Normal air flow when moving with everything intact, you get a high pressure area at the base of the windshield of outside air, and that can enter the area under the cowl through the holes on the driver's side. actual air intake is on the passenger's side under the solid portion to prevent direct water entry.

That whole section under the cowl is an air/water separator, water can drain out through the fenders while the air intake is above the bottom of the tray. Provides space for wiper mechanism as well.

The tricky spot to see for oil stink source is the top of the exh. manifold on the back of the engine. Need to look closer than at the heat shield over it, the junction of exh. and cylinder head (aluminum casting) is where any seepage can get on the hot surface to be burnt. Any black on that rusty plate that touches the engine (exh. header flange) is burnt oil that'll stink until totally crisped.
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Old 10-19-2016, 08:41 PM   #19
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The windshields are double layer glass, 95% of cracks are one layer (outer) only, the inside layer still being OK. If you were getting smell through the glass you would also be getting water from rain.
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Old 10-19-2016, 09:22 PM   #20
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Quote:
Originally Posted by rprastein View Post
My 2004 2.3L PZEV is having its share of ~300K-related issues. Most recently, P0128 (not yet resolved), and the last few days, smell of burning oil in the passenger compartment. I already replaced the valve cover gasket a few weeks ago, and I don't see any new oil leaking. And last week I noticed a sound, like a cross between a whistle and a hiss, behind the engine somewhere, near the firewall, higher pitched with increased engine RPMs. Could I have an exhaust leak?...
We have the same car (2004 2.3 PZEV).
I was getting some oil/exhaust smells inside the cabin & an air escape sound immediately after engine Off. Had that problem just after buying the car in 2013. Problem fixed after replacing the PCV hose (hose was cracked). Any Duratec Focus near this age has a dead/dying PCV Hose or it has already been replaced.

Other item: Sound at firewall side of engine "cross between a whistle and a hiss". Yeah, my engine has that too. I was never able to identify the source. The exact sound & level of the sound you are hearing might be/might not be the same I am. I have washed my hands of the sound, and deemed it normal. I sure would feel better if I knew what it was. No fun in this kind of mystery.
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