Engine fumes through the heater!!

Bertie_64 Casual Dubber

25 posts · joined Nov 2006 · 5 Jun 2007, 11:03 pm

#595321

Having a lot of trouble with the heater in my 71 Super Bug. Turn the heater on, and not only does it blow out hot air, but also very strong engine fumes. No point having the heater on and the window down to let out the smell. Has anyone else had the same problem, is there something I can do about it?

Notch Nut Custom Title Time!

1,011 posts · joined Apr 2006 · 5 Jun 2007, 11:07 pm

#595322

I havn't had this problem myself but the best areas to check are;
Check the exhaust system for leaks! (look for black sooty deposits on exhaust).
Check the heat exchangers for leaks, loose fitting (tighten anything loose), rust etc.

- Adam

If you can't fix it with a hammer,
you have an electrical problem....

Notch Nut Custom Title Time!

1,011 posts · joined Apr 2006 · 5 Jun 2007, 11:08 pm

#595323

Oh...if the fumes are petrol smelling, CHECK THE FUEL LINES!!

If you can't fix it with a hammer,
you have an electrical problem....

crewcabconnection Being Sid James

1,922 posts · joined Apr 2003 · 5 Jun 2007, 11:30 pm

#595326

standard beetle winter setting aint it? remove heater boxes and buy a coat.

Loves a lolcat

Bizarre Moderator The artist formerly known as blue74l

12,789 posts · joined Aug 2002 · 6 Jun 2007, 12:31 pm

#595372

A pet hate of mine

there are 2 fixes - one a patch and one a fix

Patch
Take the rear tin plate off and get new heater pipe clamp kit. Get the woven metal one not the fibre ones.
Take the fan belt off.
Fit the kit.
Run the motor and make sure there are no leakes. With the belt off you wont be getting confused with air from the genny fan. Obviously dont run the motor for 3 days like this - just enough to check for leaks.
Also throw the standard bolts away and go and get some hi tensile bolts from the hardware.
To the nut up tight. Then some more - the hi tensile will take it. Put a 2nd nut on as a locking nut
Use some exhaust goop if you want - but make sure everything is super clean first

The PROPPER way to fix this
Put a flange kit on
http://www.aircooled.net/new-bin/viewproductdetail.php?keyword2=MEK0001&cartid=

Cost $10 in pieces and a couple bucks for the muffler shop to cut an wels on.
It is like two flanges like #2 & 4 cylinder exhaust port flanges on an exhaust but you weld them on the heater box and exhaust connection for cylinders #1 and 3.

A LOT easier if the motor is out though - and a bit more fidly if you have a stainless steel header.

Why oh why VW never did this in the first place i will never forgive them for.
Such a simple addition for one of the best (especialy if you live in a cold area) improvements you can do

Barry

Futue te ipsum!!!

boppa Casual Dubber

38 posts · joined May 2004 · 6 Jun 2007, 4:45 pm

#595403

if its an oily smell rather than an exhaust gas smell - check the pushrod tube seals and around the heater boxes (ie rocket cover gaskets etc) for oil leaks dripping into the heater boxes
(ive seen heater boxes with nearly enough oil to do an oil change with- well not quite but it was probably around 1/2 litre of oil trapped inside)

vw's dont drip oil, they just mark their spot!!

helbus Administrator Mad fabricator, paint and body

7,386 posts · joined Sep 2002 · 6 Jun 2007, 7:58 pm

#595432

The heat riser tubes on the inlet manifold can leak and the resulting exhaust fumes in the engine bay go through the main fan and into the cabin. That is what our's does.

EJ22 into Bay Microbus - Finished project build thread- click on this spot here for info

Special Air Service Chief "Gunna"

1,769 posts · joined Oct 2004 · 6 Jun 2007, 9:27 pm

#595455

boppa wrote:if its an oily smell rather than an exhaust gas smell - check the pushrod tube seals and around the heater boxes (ie rocket cover gaskets etc) for oil leaks dripping into the heater boxes
(ive seen heater boxes with nearly enough oil to do an oil change with- well not quite but it was probably around 1/2 litre of oil trapped inside

I'd have to agree with this, oil accumulates with dust & dirt inside heater boxes & once engine heats up oily smell is released into cabin.

Oh yeah & put flanges on.

Cheers
Brendan

Calling all NSW Mid North Coast Veedubbers

Click Below

Mid North Coast VW

phatratpat Fahrvergnugen

958 posts · joined Mar 2005 · 6 Jun 2007, 9:34 pm

#595457

😁move too queensland , no heater required !😉

Wild1 Wolfsburg Wizard

448 posts · joined Jun 2006 · 13 Jun 2007, 1:25 pm

#596634

Fix it?? I love the smell!🤪

vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 · 13 Jun 2007, 5:43 pm

#596698

is it an OIL smell or carbon monoxide and putting you to sleep permanently

If its oil you have to remove teh heater boxes and flush with kero n water to wash out the oil n grease

If its carbon monoxide then you have to replace teh heater boxes with new ones

OH and moving to Queensland wont fix the problem it will still stink up there the same LOL or is it the QLD area as well LOL :puke

I read it on FACEBOOK so it must be true

http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630

http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099

http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603

http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409

Bertie_64 Casual Dubber

25 posts · joined Nov 2006 · 14 Jun 2007, 6:03 pm

#596936

Thanks everyone for your input. Some of them were quite helpful. Still mucking around with it though.