4.3 V6 Exhaust Manifold Leak - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**aotte1** · 10-21-2013, 08:44 PM

Are their any common exhaust manifold leak issues to look for? 1986 C10 4.3 V6 has an exhaust leak on passenger manifold/tubular pipes, not sure where it is. It sounds like it is the front cylinders, however, not sure. Are their any common exhaust leak problems to look for? Do not think it is the donut leaking.

thanks,
Les

07XCSBZ71 · 10-21-2013, 09:26 PM

Look for cracks. Mine on my GMC were cracked. Another member on here said he's had good luck with Rockauto.com manifolds.

**aotte1** · 10-21-2013, 10:06 PM

Thanks for the suggestion, makes sense.

Les

10-21-2013, 08:44 PM	#1
aotte1 Registered User Join Date: Oct 2013 Location: lousiville Ky Posts: 2,649	4.3 V6 Exhaust Manifold Leak Are their any common exhaust manifold leak issues to look for? 1986 C10 4.3 V6 has an exhaust leak on passenger manifold/tubular pipes, not sure where it is. It sounds like it is the front cylinders, however, not sure. Are their any common exhaust leak problems to look for? Do not think it is the donut leaking. thanks, Les

10-21-2013, 09:26 PM	#2
07XCSBZ71 Registered User Join Date: Apr 2012 Location: Murphy,NC Posts: 212	Re: 4.3 V6 Exhaust Manifold Leak Look for cracks. Mine on my GMC were cracked. Another member on here said he's had good luck with Rockauto.com manifolds.

10-21-2013, 10:06 PM	#3
aotte1 Registered User Join Date: Oct 2013 Location: lousiville Ky Posts: 2,649	Re: 4.3 V6 Exhaust Manifold Leak Thanks for the suggestion, makes sense. Les

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