Transmission is causing engine to stall

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KnockingDiesel

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Dec 7, 2016
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Location
New Mexico
First Name
TJ
Truck Year
1973
Truck Model
K10
Engine Size
350
So update, I replaced the distributor with a known good one, and no difference. I got starting fluid and sprayed everywhere there is vacuum. I found a vacuum leak at the carburetor gasket. Replaced gasket. It runs better but still not perfect. My timing light took a dump and my compression gauge too. It read low anyway. I’ll get a timing light and vacuum gauge to set idle and timing. It runs well enough that it shouldn't stall anymore but still does.

It’s weird that it will idle in reverse but not in D, 2 or 1. I was thinking about chocking front tires and jacking up the rear (with jack stands) and putting it in drive. Just to see what happens, it rolls and stops fine when we moved it around.
 

squaredeal91

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Mar 10, 2023
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Cave junction Oregon
First Name
Greg bush
Truck Year
1991 SB
Truck Model
K30
Engine Size
5.9 Cummins 12 valve
Im not sure if this is related or if it has been mentioned before but maybe
Check your transmission cooler lines. Be sure they are not plugged up? I once burned up a th400 because external transmission cooler was plugged up.
 

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