#4 exhaust manifold is white

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McCall Pinz
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#4 exhaust manifold is white

Post by McCall Pinz »

I pulled the exhaust manifold today and was surprised to find the #4 pipe is white while the other three are black. Is white too lean? or is black too rich? Also, #4 is the one that had the leak. I'll post a pic later. Thanks for input.
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Buzz
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Re: #4 exhaust manifold is white

Post by Buzz »

Others will have to comment on whether it's to lean or not. But I have noticed mine assume the color of whatever color mud I was in when they were hit with it. Then the color baked on. Odds are that pipe was a lot colder than the others and assumed a different color. That must have been a bad leak!
"It's as stupid and wonderful as owning a pet elephant."
1974 Pinzgauer 710M
1990 Puch G Wagon 230 GE
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edzz
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Re: #4 exhaust manifold is white

Post by edzz »

Buzz he has the manifold removed and is looking at the inside of the exhaust ports.

In my opinion number 4 is running lean. Before replacing the manifold I would check the valve adjustment than do a compression test.
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McCall Pinz
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Re: #4 exhaust manifold is white

Post by McCall Pinz »

Yes the interior of the pipe was white... :shock:
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McCall Pinz
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Re: #4 exhaust manifold is white

Post by McCall Pinz »

A quick search seems to suggest that the exhaust leak right at the head can cause a lean condition, but I'll pull the plugs to check.
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edzz
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Re: #4 exhaust manifold is white

Post by edzz »

McCall Pinz wrote:A quick search seems to suggest that the exhaust leak right at the head can cause a lean condition, but I'll pull the plugs to check.
Very possible, If the plugs are reasonably consistent all should be good.
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Buzz
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Re: #4 exhaust manifold is white

Post by Buzz »

I knew that! I was just checking you guys! :roll:
"It's as stupid and wonderful as owning a pet elephant."
1974 Pinzgauer 710M
1990 Puch G Wagon 230 GE
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edzz
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Re: #4 exhaust manifold is white

Post by edzz »

Buzz wrote:I knew that! I was just checking you guys! :roll:

Ya right, and like there’s a snowball’s chance in Jacksonville that I’ll believe that..
than again I do remember it snowing in the ‘70’s when I was stationed at NAS JAX. :lol:
Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.
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