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Author Topic: Exhaust gas smell in cabin  (Read 319 times)

Offline ChrisD

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Exhaust gas smell in cabin
« on: March 05, 2024, 04:07:28 AM »
Hi,
my 1978 250i6 smells of exhaust fumes in the cabin.
My mechanic had allready checked the exhaust, with blocking the end and then looking an listen if there's a leak, but he didn't find anything.

Do someone have anorher tip, where i can have a look?

Regards
Chris
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1978 Chevy C10 short bed with 250i6 and manual 3speed Saginaw
German us-car/truck newbie

Offline VileZambonie

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Re: Exhaust gas smell in cabin
« Reply #1 on: March 05, 2024, 03:20:52 PM »
Do you hear an exhaust leak? Do you smell any odors around the truck that resemble what you smell inside?
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline ChrisD

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Re: Exhaust gas smell in cabin
« Reply #2 on: March 06, 2024, 03:10:24 PM »
Hi, no i don't hear a leak and i didn‘t smelled it outside until now - only at the rear.
Could it be the agr valve?
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1978 Chevy C10 short bed with 250i6 and manual 3speed Saginaw
German us-car/truck newbie

Offline ChrisD

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Re: Exhaust gas smell in cabin
« Reply #3 on: April 12, 2024, 02:34:45 PM »
Okay, I cut a small sheet of metal to size and put it between the EGR and the seal. It's much better since then. Only at the traffic lights does it sometimes still pull in, but that can go under the truck
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1978 Chevy C10 short bed with 250i6 and manual 3speed Saginaw
German us-car/truck newbie
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