new heater boxes & exaust and I still spew exaust into bus...

Block off the exhaust tips at idle. You should be able to stall the engine. If not, you will hear the leaks and be able to pinpoint them.

The gasket between the head and exhaust/heater is notorious for leaking.

Speedy Jim

..............But how could exhaust travel forward into the inside of the bus?

On Mon, 17 Nov 2003 20:11:24 -0500, "Tim Rogers" shared the following:

Vacuum. I have a "windjammer" on order now. *cough cough* (Sorry, missed the thread up until now, but my answer is a valid one for this, I think.)

-- Travis

LOL Good question. I was assuming leakage either into the exchanger shell or getting sucked into the fan. (Fuzzy thinking...) Jim

On Mon, 17 Nov 2003 20:17:46 -0500, Speedy Jim shared the following:

Again, I know I'm an "outsider" here now and I didn't even read all of the thread but I did read the "...how could exhaust travel forward into the inside of the..." question. In my Jeep my exhaust is now "complete" and exits about 1/2 " behind the rear bumper, but when driving down the road with no top or doors, etc, the exhaust is still pulled back into the driver/passenger compartment by vacuum. I've read the answers from the "Jeep guys" on this one where several people have asked what's up with that. Personally I've found that the "gasoline smell" kinda had its advantages at work. People tend to avoid me (even more than they did) and nobody wants me to drive us to lunch anymore. :-) My advice: Enjoy the exhaust smell. ;-)

-- Travis

..............I was thinking that it would have to be into the heater box shell but then it would still only come inside when the heat was being used........isn't that right?

On Mon, 17 Nov 2003 20:29:42 -0500, "Tim Rogers" shared the following:

Well, since you live in NY, it's probably wrong. Whatever you said. You know, since you come from NY you're probably wrong. It's as simple as that. :-) Yes, there was a fire at the Jim Beam factory. No, it didn't burn it *all* up. ;-) Sorry, y'all... I'll try harder to wean myself off of RAMVA. heh heh

-- Travis

OK. New approach. Travis might have given a clue. OP has a non-stock exhaust on the Bus. Very possible that the exhaust from the tips is being sucked into the engine air intakes on the side. ?? Jim

...yup this would definitely be a new approach ;-)

...Gareth

On Mon, 17 Nov 2003 21:06:46 -0500, Gary Tateosian shared the following:

Just in case anybody still reads my posts out here, here's my response. FU, Gary. :)

-- Travis

...........The difference with your jeep is that it's "open" in the back. A vw bus is closed unless the rear hatch seal is totally shot to hell. I bought a small sailboat last year and had to carry it about 20 miles back to my house in my vanagon with the rear hatch open because of the length of the hull. I was literally hanging out the window trying to keep from poisoning myself and was feeling pretty lousy for a few hours afterward. It's no wonder that my wife thinks that I'm brain dead..........lol

...............Those billy bobs over at the jeep group just aren't doing it for you, are they Travis? If you want us to take you back, you're gonna have to beg and grovel and get a bug.

....................Don't those monza style mufflers exit out the back? Besides, Travis has to get a clue before he can give one.....lol

HAH ! :-)

................I wonder if Travis has figured out those locking hubs yet.

YEE HAH ! :-)

Okay, here's my thoughts on the subject: Exhaust definitely will come in through any bad widow / rear hatch seals. It is possible but extremely unlikely that any significant amount (enough to activate the monitor) would come in via the side vents and engine air and then through the heater ducts. More likely in my opinion: If it IS exhaust (Speedy's "plug the pipe" trick should tell you if it's leaking) it is unlikely to come in from a leak at the head-to-manifold gaskets because the heat exchanger is pressurized at that point and not sucking anything. It would have to come through the fan or the booster fan. Most likely is that it's not exhaust at all, but oil all over the inside of the blower housing, all over the inside of the heat exchangers, and all over the insides of the ducts. If this engine or these component parts have ever had a typical oil pressure sender oil leak, or a typical valve cover gasket or push-rod-tube o-ring oil leak, there is oils all over inside there that needs to burn away (assuming it no longer leaks) and only then will you have fresh, clean air coming through the system. Does it really smell "just like exhaust?" I've been through this so many times, I suspect it isn't an exhaust leak at all, but is still producing carbon mon oxide from the oil burning. It really helps to have this happen in the summer so you can go on a nice long 2000 mile journey and burn it all out / dry it all up with the windows open! The biggest culprit over the years for me has been the oil pressure light sending unit. I think somewhere in the neighborhood of 97% of them leak either when new or within 6 weeks after install. That oil runs down into the air duct between the fan housing and the heat exchanger after the engine is shut off. (While running, the fan blows it everywhere else so's you can't diagnose it easily!) Any other oil leaks get picked up by the fan and again, when the engine is shut off, it collects at the bottom of the fan housing and at the two housing-to-exchanger ducts. When you start the engine, it is blown into the hot part of the heat exchanger and burns there, exhausting it's smoke through your heaters. Resist hot-tanking the heat exchangers. Better to have the oil smoke which eventually burns away than the little particles of insulation (the dangerous stuff - damned brain can't locate the word - hell to get old!) blowing out the vents all the time. Any questions, e-mail me cuz I don't get in here that often anymore (someone keeps eating the breadcrumbs and I can't find my way back!)

-- Dave "Busahaulic" Pearson Fall City, Washington Remove obvious from addy to e-mail

travis wrote in message news: snipped-for-privacy@4ax.com...

wrote:

my

On Mon, 17 Nov 2003 21:36:45 -0500, "Tim Rogers" shared the following:

How about a notchback? :-)

-- Travis

On Mon, 17 Nov 2003 21:42:24 -0500, "Tim Rogers" shared the following:

Rightsey, tightsey. Leftsey, loosey. ;-)

-- Travis

Hi.Exhaust fumes will travel forward because of aerodynamics of any square backed vehical.Hence the warning stickers on most station wagon type cars not to operate with tailgate open.My Ford is even interlocked to not start if lift gate is open.See Kamm effect under aero text.And carbon monoxide in nothing to LOL.Careful out there.Steve

That's why he doesn't have a clue. He's so generous that each time one comes his way he hands it off to someone in greater need. He's quite the philanthropist.