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1973 Bad smell after driving! Help
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bustedtype2
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PostPosted: Thu Nov 23, 2017 4:09 pm    Post subject: 1973 Bad smell after driving! Help Reply with quote

I have a 1973 bay window bus that I just got done doing some normal maintenance.
New front pads
Repacked bearings
Bled and adjusted brakes
WD40 back brake mechanism ďNot shoesĒ
Fixed exhaust leak with new gasket and high heat silicone between exhaust and header.
Added small amount of gear fluid to trans until it came out the side hole.

Took for a test drive and now it smells like burnt rubber. The farther I drive the worst the smell gets.

Stops fine
Brakes do not get hot, clutch dose not slip or chatter. No smoke or fire. Itís been about a week now. It dose not smell like burnt oil. What can this be??? Need help!
Thank you
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Wildthings
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PostPosted: Thu Nov 23, 2017 4:41 pm    Post subject: Re: 1973 Bad smell after driving! Help Reply with quote

You probably are smoking the silicone. May not have been fully set and can't handle exhaust temps no matter what. Oil and grease from you hands will get on to the exhaust pipes when you touch them and take a while to burn off as well.
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Wildthings
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PostPosted: Thu Nov 23, 2017 4:41 pm    Post subject: Re: 1973 Bad smell after driving! Help Reply with quote

Double post, delete

Last edited by Wildthings on Thu Nov 23, 2017 8:13 pm; edited 1 time in total
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SGKent Premium Member
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PostPosted: Thu Nov 23, 2017 5:22 pm    Post subject: Re: 1973 Bad smell after driving! Help Reply with quote

put your hands palm open near the hubcaps but DO NOT TOUCH THEM to see if there is excessive heat coming off the brakes. You can instead use an R gun if you have one to check temps.

Do the same for the fronts
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Godspeed to all who undertake a journey in a VW Bus.

*You can do it right the first time, or do it over, the choice is yours. It is a free country. As to brakes, steering, tires, axles etc. - you may only get one chance at doing those right.

* VW Buses and VW cars share many of the same systems but if you haven't owned a bus and maintained it for awhile, you really don't know how different it is.

1971 (sold)
1977
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bustedtype2
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PostPosted: Thu Nov 23, 2017 5:36 pm    Post subject: Re: 1973 Bad smell after driving! Help Reply with quote

I checked the brakes and all still cool. Would high heat silicone smell like that? I have used it before and never had this problem. Is it possible for the gear oil I put in make it to the clutch and thatís whatís burning? Donít think I put that much in but you never no.
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pioneer1
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PostPosted: Thu Nov 23, 2017 6:21 pm    Post subject: Re: 1973 Bad smell after driving! Help Reply with quote

Did you paint or introduce any cleaners to the insides of the heat exchagers
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bustedtype2
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PostPosted: Thu Nov 23, 2017 8:53 pm    Post subject: Re: 1973 Bad smell after driving! Help Reply with quote

I may have got some silicone on them. I did paint the exhaust with high heat BBQ paint. But I have done that before without a smell.
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PostPosted: Thu Nov 23, 2017 8:56 pm    Post subject: Re: 1973 Bad smell after driving! Help Reply with quote

bustedtype2 wrote:
It dose not smell like burnt oil. What can this be??? Need help!
Thank you


hold your bus up to the computer. I can't smell it from here
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Wildthings
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PostPosted: Thu Nov 23, 2017 9:05 pm    Post subject: Re: 1973 Bad smell after driving! Help Reply with quote

[email protected] wrote:
bustedtype2 wrote:
It dose not smell like burnt oil. What can this be??? Need help!
Thank you


hold your bus up to the computer. I can't smell it from here


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raygreenwood
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PostPosted: Thu Nov 23, 2017 10:27 pm    Post subject: Re: 1973 Bad smell after driving! Help Reply with quote

bustedtype2 wrote:
I may have got some silicone on them. I did paint the exhaust with high heat BBQ paint. But I have done that before without a smell.


Question....what are you using WD-40 for? There ks actually nothing anywhere in the brakr syztem it has any use for....and it WILL attack EPDM rubber....which is what all brake seals, wheel cylinder boots and rubber parts are made of.
WD-40 is a solvant and water dispersant but has virtually no use as a lubricant long term and especially not in hot conditions.

But ..nasty as it smells when burning off....its not that nasty and should be gone quickly. I don think that is your problem. If you have a leaky wheel cylinder boot.....brakr fluid smells nasty when burning off.
Ray
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bustedtype2
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PostPosted: Fri Nov 24, 2017 12:45 am    Post subject: Re: 1973 Bad smell after driving! Help Reply with quote

Thank you Ray
I will check the wheel cylinders tomorrow. The emergency brake lever was rusty so I hit it with WD40 thanks for the instruction much appreciated. Question if a clutch was burning and smelling would it still do itís job perfectly ?
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Wildthings
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PostPosted: Fri Nov 24, 2017 3:13 am    Post subject: Re: 1973 Bad smell after driving! Help Reply with quote

A clutch isn't going to get hot unless it is slipping either because you are using it to get going or because there is something wrong with the clutch adjustment or there is some kind of failure going on.
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Abscate Premium Member
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PostPosted: Fri Nov 24, 2017 5:17 am    Post subject: Re: 1973 Bad smell after driving! Help Reply with quote

Silicone burn off.

Iíve found computers in the new made on the new place quite smell, but the old factory ones smell just fine.
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