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GMC V6 and V12 Engines Engine repair and rebuilding

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  #11  
Old April 17th, 2021, 10:33 PM
geasson geasson is offline
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Default Re: Is it my fuel pump?

Success, it took about 20 seconds but I did finally start getting gas through the pump. I hooked the fuel line back up and it started. Thanks for all your help. Now, to fix the brakes and what sounds like some lifter noise.
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  #12  
Old April 18th, 2021, 05:27 PM
George Bongert George Bongert is offline
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Default Re: Is it my fuel pump?

Quote:
Originally Posted by geasson View Post
Success, it took about 20 seconds but I did finally start getting gas through the pump. I hooked the fuel line back up and it started. Thanks for all your help. Now, to fix the brakes and what sounds like some lifter noise.
I wouldn't worry too much about the lifter noise since these engines are equipped with solid lifters, and they do require some clearance between the rocker arms and the valve stems. I can't quote the clearances required since I don't have that data right in front of me. It's been a long time since I've worked on any of these engines, so I'm just guessing here, but somehow .013 on the intake valves, and .017 on the exhaust valves comes to mind, and I believe those settings would be with the engine at normal operating temperature.
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  #13  
Old April 19th, 2021, 05:31 PM
geasson geasson is offline
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Default Re: Is it my fuel pump?

I wasn't sure if these had solid lifters or not, so thanks for that info. I knew they were solid lifters in 1967.
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