Re Assembly on Vent window lock? And Fumes in cab?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

LOHRTBT · 01-15-2006, 04:26 PM

SO I need a diagram for reassembly of the vent windows...I didnt take them off my buddy did that tinted the windows. ?? Help? thanks!

Also...I have a horrible fumes/ gas smell in the cab when its running. It almost looks smoky in there when you let it idle. What could be causing this??

LOHRTBT · 01-15-2006, 04:55 PM

Problem One solved. Still need assistance on what might be causing the fumes in the cab...its really bad and makes you have a horrible headache.

MylilBowTie · 01-15-2006, 05:02 PM

Does the exhaust system have any holes in it? Is the blower motor running when it happens?

I dont think it would be the vent window any more than like the window being down would cause.

marvxyz1 · 01-15-2006, 06:29 PM

rust hole around filler tube will cause it.

LOHRTBT · 01-15-2006, 06:49 PM

No....these are 2 different problems...the windows are fixed. The Gas smell is my concern.

What is the filler tube you are talking about?? its a new exhaust system with dumps...and I never had a problem with my old truck and dumps with smell.

Izzy · 01-15-2006, 07:36 PM

Is the seal around the steering column/firewall in tact? That would be where I'd start.

LOHRTBT · 01-15-2006, 07:45 PM

I will have to check that out.

79BIG10 · 01-15-2006, 08:52 PM

Also check the fuel pump for leaking.

LOHRTBT · 01-15-2006, 09:05 PM

Ok....So if I move the selector over to OFF and have no vent or heat or air.....NO smell. If I open it, SMELLY TOWN!

79BIG10 · 01-15-2006, 09:37 PM

Maybe a clogged EGR?

MylilBowTie · 01-15-2006, 10:05 PM

Its something in the engine bay area, the fan blower is blowing it in the cab. Is there a strong gas smell under the hood without the engine running?

LOHRTBT · 01-16-2006, 12:08 AM

somewhat..but not bad when not running. Hell its got gosh knows how many miles on a stock 305 haha. Has audible valve problems in the exhaust note but it runs fine.

LOHRTBT · 01-16-2006, 02:05 PM

So no one else has this problem?? dang

MylilBowTie · 01-16-2006, 02:41 PM

If you really get bored. You could rent a fog machine put in the engine and turn it on with the hood almost closed. Then go in the cab and look where its getting in at. Just an idea Ive run out of everything else unless the cab is pretty rotted someplace.

Prerunner1982 · 01-16-2006, 02:43 PM

dave, my wifes Maxima had that problem, she had a small fuel leak on top of the engine..

LOHRTBT · 01-16-2006, 04:39 PM

Yeah...I had a small leak at the carb..but i just fixed that one..so now I am at a loss.

I guess I could try the fog machine lol.

THe cab has no rot..that is what bothers me.

bluex · 01-16-2006, 05:07 PM

Sounds like it has got be be a seal somewhere around the airbox. My truck has dumps right at the axle and half the floor rotted out with no carpet or anything and I dont get any smell in mine. I would look at the airbox, maybe someone removed/damaged the seal changing the heater core or blower motor??

Prerunner1982 · 01-16-2006, 05:46 PM

i am sure its coming in the airbox/blower area... the issue should be whats causing the smell...

Dave, how long ago did you fix the fuel problem? could be left over fuel still puddled somewhere?

LOHRTBT · 01-16-2006, 06:51 PM

Its dry..I fixed the leak after it sat for 3 days. Just needed to tighten up a nut.

I have a feeling its the blower too...just need to figure out where to seal it up at. Man...its a deathtrap right now lol!!! close the windows and start it up..DEAD.

79BIG10 · 01-17-2006, 01:00 AM

I got a weird guess but it's worth a shot. The T coming off the back of the intake to pull a vacuum for the heater ball may be leaking exhaust fumes into it.

**Phuloi68** · 01-17-2006, 01:45 AM

I have about the same thing you have. I think there may be a little smoke coming from then engine compartment thru the airbox,heater.
When I first got this truck, I wasn't getting any defrost. I was under the dash doing all kinds of things trying to figure out why not(it ended up being a broken vacuum hose on the intake manifold). In the process I was playing with the flapper door cable adjustment. I know for a fact it is not adjusted correctly and does not properly seal, been to lazy to get back under and adjust it correctly. I think this allows some smoky, or exhaust, fumes from the engine compartment into the cab. Because this is my "beater", I just keep the window down a little while I run for a part or something.

marvxyz1 · 01-17-2006, 10:56 PM

I'd check for rust holes around the gasolene filler tube

Eyegore · 01-18-2006, 10:05 AM

Dave, my 86 had the same smell and it to had several miles on the truck. After I replaced the engine it seems to have disappeared, perhaps greater vaccum to properly close and open the fresh air venting to the a/c. You may want to check the tube going into your blower motor from the case and the blower motor itself, perhaps running a bead of silicone around the base of the motor sealing it.

Tom

jermasaurus · 01-19-2006, 12:58 AM

My passenger side valve cover was leaking in the back and running down the head and made its way to the manifold.
The fan would just blow smoke at the firewall, and with the blower motor on it would come right in. The cab would get kind of cloudy like you mentioned and smell like smoke/fumes.
You may not even notice the smoke with a clutch fan moving all the time.
Maybe check that out.

-Jeremy

01-15-2006, 04:26 PM	#1
LOHRTBT BeWarE tHe eViL CrAnkTOe! Join Date: Oct 2002 Location: Yukon, OK Posts: 3,605	Re Assembly on Vent window lock? And Fumes in cab?? SO I need a diagram for reassembly of the vent windows...I didnt take them off my buddy did that tinted the windows. ?? Help? thanks! Also...I have a horrible fumes/ gas smell in the cab when its running. It almost looks smoky in there when you let it idle. What could be causing this?? __________________ ~Dave~ You can call me Mike, Mike Oxlong - 1986 Chevy SWB - Stock for now - *1986 Chevy Custom SWB* *Stolen 6/26/05* - 1985 Chevy SWB SOLD - 1999 T/A Some mods www.cardomain.com/id/ramairdave AIM Screenname - Jester84

01-15-2006, 04:55 PM	#2
LOHRTBT BeWarE tHe eViL CrAnkTOe! Join Date: Oct 2002 Location: Yukon, OK Posts: 3,605	Re: Re Assembly on Vent window lock? And Fumes in cab?? Problem One solved. Still need assistance on what might be causing the fumes in the cab...its really bad and makes you have a horrible headache. __________________ ~Dave~ You can call me Mike, Mike Oxlong - 1986 Chevy SWB - Stock for now - *1986 Chevy Custom SWB* *Stolen 6/26/05* - 1985 Chevy SWB SOLD - 1999 T/A Some mods www.cardomain.com/id/ramairdave AIM Screenname - Jester84

01-15-2006, 05:02 PM	#3
MylilBowTie Right turn Clyde Join Date: Nov 2002 Location: Cincinnati, Ohio Posts: 2,911	Re: Re Assembly on Vent window lock? And Fumes in cab?? Does the exhaust system have any holes in it? Is the blower motor running when it happens? I dont think it would be the vent window any more than like the window being down would cause. __________________ 1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI

01-15-2006, 06:29 PM	#4
marvxyz1 Registered User Join Date: Oct 2005 Location: Pittsburgh, Pa Posts: 106	Re: Re Assembly on Vent window lock? And Fumes in cab?? rust hole around filler tube will cause it.

01-15-2006, 06:49 PM	#5
LOHRTBT BeWarE tHe eViL CrAnkTOe! Join Date: Oct 2002 Location: Yukon, OK Posts: 3,605	Re: Re Assembly on Vent window lock? And Fumes in cab?? No....these are 2 different problems...the windows are fixed. The Gas smell is my concern. What is the filler tube you are talking about?? its a new exhaust system with dumps...and I never had a problem with my old truck and dumps with smell. __________________ ~Dave~ You can call me Mike, Mike Oxlong - 1986 Chevy SWB - Stock for now - *1986 Chevy Custom SWB* *Stolen 6/26/05* - 1985 Chevy SWB SOLD - 1999 T/A Some mods www.cardomain.com/id/ramairdave AIM Screenname - Jester84

01-15-2006, 07:36 PM	#6
Izzy Trucker. Join Date: Nov 2002 Location: Fort Worth, TX Posts: 1,364	Re: Re Assembly on Vent window lock? And Fumes in cab?? Is the seal around the steering column/firewall in tact? That would be where I'd start.

01-15-2006, 07:45 PM	#7
LOHRTBT BeWarE tHe eViL CrAnkTOe! Join Date: Oct 2002 Location: Yukon, OK Posts: 3,605	Re: Re Assembly on Vent window lock? And Fumes in cab?? I will have to check that out.

01-15-2006, 08:52 PM	#8
79BIG10 I'm back with 2nd truck! Join Date: Feb 2002 Location: Texas Posts: 3,775	Re: Re Assembly on Vent window lock? And Fumes in cab?? Also check the fuel pump for leaking. __________________ 1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson

01-15-2006, 09:05 PM	#9
LOHRTBT BeWarE tHe eViL CrAnkTOe! Join Date: Oct 2002 Location: Yukon, OK Posts: 3,605	Re: Re Assembly on Vent window lock? And Fumes in cab?? Ok....So if I move the selector over to OFF and have no vent or heat or air.....NO smell. If I open it, SMELLY TOWN!

01-15-2006, 09:37 PM	#10
79BIG10 I'm back with 2nd truck! Join Date: Feb 2002 Location: Texas Posts: 3,775	Re: Re Assembly on Vent window lock? And Fumes in cab?? Maybe a clogged EGR? __________________ 1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson

01-15-2006, 10:05 PM	#11
MylilBowTie Right turn Clyde Join Date: Nov 2002 Location: Cincinnati, Ohio Posts: 2,911	Re: Re Assembly on Vent window lock? And Fumes in cab?? Its something in the engine bay area, the fan blower is blowing it in the cab. Is there a strong gas smell under the hood without the engine running? __________________ 1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI

01-16-2006, 12:08 AM	#12
LOHRTBT BeWarE tHe eViL CrAnkTOe! Join Date: Oct 2002 Location: Yukon, OK Posts: 3,605	Re: Re Assembly on Vent window lock? And Fumes in cab?? somewhat..but not bad when not running. Hell its got gosh knows how many miles on a stock 305 haha. Has audible valve problems in the exhaust note but it runs fine. __________________ ~Dave~ You can call me Mike, Mike Oxlong - 1986 Chevy SWB - Stock for now - *1986 Chevy Custom SWB* *Stolen 6/26/05* - 1985 Chevy SWB SOLD - 1999 T/A Some mods www.cardomain.com/id/ramairdave AIM Screenname - Jester84

01-16-2006, 02:05 PM	#13
LOHRTBT BeWarE tHe eViL CrAnkTOe! Join Date: Oct 2002 Location: Yukon, OK Posts: 3,605	Re: Re Assembly on Vent window lock? And Fumes in cab?? So no one else has this problem?? dang

01-16-2006, 02:41 PM	#14
MylilBowTie Right turn Clyde Join Date: Nov 2002 Location: Cincinnati, Ohio Posts: 2,911	Re: Re Assembly on Vent window lock? And Fumes in cab?? If you really get bored. You could rent a fog machine put in the engine and turn it on with the hood almost closed. Then go in the cab and look where its getting in at. Just an idea Ive run out of everything else unless the cab is pretty rotted someplace. __________________ 1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI

01-16-2006, 02:43 PM	#15
Prerunner1982 Registered User Join Date: Oct 2002 Location: Edmond, OK Posts: 5,906	Re: Re Assembly on Vent window lock? And Fumes in cab?? dave, my wifes Maxima had that problem, she had a small fuel leak on top of the engine.. __________________ Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call



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01-16-2006, 04:39 PM	#16
LOHRTBT BeWarE tHe eViL CrAnkTOe! Join Date: Oct 2002 Location: Yukon, OK Posts: 3,605	Re: Re Assembly on Vent window lock? And Fumes in cab?? Yeah...I had a small leak at the carb..but i just fixed that one..so now I am at a loss. I guess I could try the fog machine lol. THe cab has no rot..that is what bothers me. __________________ ~Dave~ You can call me Mike, Mike Oxlong - 1986 Chevy SWB - Stock for now - *1986 Chevy Custom SWB* *Stolen 6/26/05* - 1985 Chevy SWB SOLD - 1999 T/A Some mods www.cardomain.com/id/ramairdave AIM Screenname - Jester84

01-16-2006, 05:07 PM	#17
bluex Registered User Join Date: Jun 2004 Location: Spartanburg, SC Posts: 1,963	Re: Re Assembly on Vent window lock? And Fumes in cab?? Sounds like it has got be be a seal somewhere around the airbox. My truck has dumps right at the axle and half the floor rotted out with no carpet or anything and I dont get any smell in mine. I would look at the airbox, maybe someone removed/damaged the seal changing the heater core or blower motor?? __________________ Paul '78 GMC Serria 15 Heavy Half. 361/NV3500/3.73. Former LWB NV3500 swap Trailing arm swap '98 ECSB Z71 daily driver -traded '03 burb. Family cruiser http://upstategmtrucks.com/

01-16-2006, 05:46 PM	#18
Prerunner1982 Registered User Join Date: Oct 2002 Location: Edmond, OK Posts: 5,906	Re: Re Assembly on Vent window lock? And Fumes in cab?? i am sure its coming in the airbox/blower area... the issue should be whats causing the smell... Dave, how long ago did you fix the fuel problem? could be left over fuel still puddled somewhere?

01-16-2006, 06:51 PM	#19
LOHRTBT BeWarE tHe eViL CrAnkTOe! Join Date: Oct 2002 Location: Yukon, OK Posts: 3,605	Re: Re Assembly on Vent window lock? And Fumes in cab?? Its dry..I fixed the leak after it sat for 3 days. Just needed to tighten up a nut. I have a feeling its the blower too...just need to figure out where to seal it up at. Man...its a deathtrap right now lol!!! close the windows and start it up..DEAD. __________________ ~Dave~ You can call me Mike, Mike Oxlong - 1986 Chevy SWB - Stock for now - *1986 Chevy Custom SWB* *Stolen 6/26/05* - 1985 Chevy SWB SOLD - 1999 T/A Some mods www.cardomain.com/id/ramairdave AIM Screenname - Jester84

01-17-2006, 01:00 AM	#20
79BIG10 I'm back with 2nd truck! Join Date: Feb 2002 Location: Texas Posts: 3,775	Re: Re Assembly on Vent window lock? And Fumes in cab?? I got a weird guess but it's worth a shot. The T coming off the back of the intake to pull a vacuum for the heater ball may be leaking exhaust fumes into it. __________________ 1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson

01-17-2006, 01:45 AM	#21
Phuloi68 Senior Member Join Date: Dec 2003 Location: Valparaiso, In Posts: 1,114	Re: Re Assembly on Vent window lock? And Fumes in cab?? I have about the same thing you have. I think there may be a little smoke coming from then engine compartment thru the airbox,heater. When I first got this truck, I wasn't getting any defrost. I was under the dash doing all kinds of things trying to figure out why not(it ended up being a broken vacuum hose on the intake manifold). In the process I was playing with the flapper door cable adjustment. I know for a fact it is not adjusted correctly and does not properly seal, been to lazy to get back under and adjust it correctly. I think this allows some smoky, or exhaust, fumes from the engine compartment into the cab. Because this is my "beater", I just keep the window down a little while I run for a part or something. __________________ Phuloi68 Indy survivor Norwood survivor Big Sandy survivor for those who fight for it... F R E E D O M has a price the protected will never know.

01-17-2006, 10:56 PM	#22
marvxyz1 Registered User Join Date: Oct 2005 Location: Pittsburgh, Pa Posts: 106	Re: Re Assembly on Vent window lock? And Fumes in cab?? I'd check for rust holes around the gasolene filler tube

01-18-2006, 10:05 AM	#23
Eyegore What Hump? Join Date: Apr 2003 Location: New River AZ Posts: 2,009	Re: Re Assembly on Vent window lock? And Fumes in cab?? Dave, my 86 had the same smell and it to had several miles on the truck. After I replaced the engine it seems to have disappeared, perhaps greater vaccum to properly close and open the fresh air venting to the a/c. You may want to check the tube going into your blower motor from the case and the blower motor itself, perhaps running a bead of silicone around the base of the motor sealing it. Tom __________________ Lil red 86 c-10 99 Sub 78 Camper Special w/ 454

01-19-2006, 12:58 AM	#24
jermasaurus Registered User Join Date: Dec 2004 Location: New Lenox, IL Posts: 442	Re: Re Assembly on Vent window lock? And Fumes in cab?? My passenger side valve cover was leaking in the back and running down the head and made its way to the manifold. The fan would just blow smoke at the firewall, and with the blower motor on it would come right in. The cab would get kind of cloudy like you mentioned and smell like smoke/fumes. You may not even notice the smoke with a clutch fan moving all the time. Maybe check that out. -Jeremy __________________ 79 Jimmy slammed AKA James Down

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