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Old 04-29-2014, 11:13 PM
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350 crate motor start up problem

i just built this motor and installed it into my gmc but it wont start? it will turn over then its about to start like it starts to idle then it shuts off, is this a matter of overloading or start cylinoid or maybe the fuel pump cause it sounds like it aint getting enough gas to me any theories or remedies?

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Old 04-30-2014, 07:25 AM
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check to see if its getting enough gas,,,
Is the carb full?
are the floats set correct?
Is the fuel pump moving enough volume?
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Old 04-30-2014, 07:43 AM
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Check fuel pressure, check timing. Did you assemble the entire engine? Just wondering how it's a crate engine if you built it. If the engine has a flat tappet cam you need to verify fuel pressure, timing, and make sure everything else is correct before attempting to start. Don't just keep cranking the engine going for it to start.

Verify firing order and make sure your distributor isn't 180 degrees out. Did you verify all your tdc markings before installing the cylinder head?
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Old 04-30-2014, 02:04 PM
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yep 2 of my spark plugs wires were crossed i got them put in the right order and she started right up, it sounds just like how i wanted it to sound and thats awsome
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