June 27th, 2014, 08:48 PM
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Member
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Join Date: May 2013
Location: phila pa
Truck: 1947 Flxible Clipper Bus 29 passenger 401 M
Posts: 76
Rep Power: 87
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Re: Holley 500 problem
if you can pressurize the fuel line and rap the side of the bowl lightly with a dead blow hammer you should be able to free up the needle. clean gas should clean a varnished up seat. if you can get it freed up and it doesn't run well you may need to pull it apart. 2 weeks ago went to fire up our 401M powered bus that sat for 2 years. no squirt. rapped the side of the Stromberg and nothing. turned on the electric fuel pump and rapped it once. heard the bowl fill and it fired right up.
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