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Old June 9th, 2021, 05:59 AM
sgrmaker58 sgrmaker58 is offline
Join Date: Jun 2019
Location: central VT
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Default M725 Carburetor

Truck runs fine at idle as soon as I let the clutch out and start moving I start to get some back firing. Once on the road shifting in to higher gears causes the same issue. I saw a thread on the needle valve should be #70.
The carburetor has been rebuilt, distributer cap is less than ideal, original with coil removed to the outside and a hole for the wire in the cap. Where might I find a new old stock cap? thanks in advance.
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Old June 9th, 2021, 03:47 PM
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m38inmaine m38inmaine is offline
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Are you looking for an inner cap or outer cap ?
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Old June 10th, 2021, 07:07 AM
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Barrman Barrman is offline
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Once you get good distributor parts. Check your timing. The stock engine will run with crazy timing settings at low speed and then protest in weird ways at higher rpm.
Remember if you didn't build it you can't call it yours.

6.2 powered M715, 5 M1009's, M416, 2 M101's, 2 M105's, 3 M35's, M1007 6.5 turbo Suburban project called Cowdog.
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