Similar problem to 600NITRO post
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Similar problem to 600NITRO post
I've developed a stall with my '79 351M ever since I replaced my carb with a newer version of the 2150 (p/o had a 2150 from a '77 truck). I rebuilt the newer carb and made the correct bench adjustments. It fired up and after backing the idle mixture screw off 4 rounds, it idled great. Now, once the engine reaches normal op. temp, it occasionally stalls, especially when I let off of the accelerator to coast to a stop light, sign, etc...I've even heard it dieseling slightly when it stalls. After stalling, I can pump it twice and make it crank. However, I've had a very difficult time getting it to start a few times after it stalled. I don't know if this is coincidental with me changing out the carbs, and that I possibly have a completely different problem, or if it is the carb. A couple of questions and then I'll open the floor for answers, suggestions, etc...
1. What is the correct wet float adjustment/measurement?
2. What is the proper timing setting of the engine (no EGR components)?
3. Can the idle mixture screws be causing this problem if they are not set correctly?
1. What is the correct wet float adjustment/measurement?
2. What is the proper timing setting of the engine (no EGR components)?
3. Can the idle mixture screws be causing this problem if they are not set correctly?
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Joined: Sep 2001
Posts: 30,255
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Carb adjustments...
4 turns out sounds way too much making it too rich which can cause stalling and hard starting.
Check with the 335 series engine forum for timing questions. -But basically you have distributor adjustments to make when there is no EGR. There are many threads on this subject there. People seem to ask the same question every week.
4 turns out sounds way too much making it too rich which can cause stalling and hard starting.
Check with the 335 series engine forum for timing questions. -But basically you have distributor adjustments to make when there is no EGR. There are many threads on this subject there. People seem to ask the same question every week.
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