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Ron, ASE Certified Technician
Category: Chevy
Satisfied Customers: 35515
Experience:  35 years experience with ASE Certs
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2007 chevy 5.3 new engine, crank no start, no codes and weak

Customer Question

2007 chevy 5.3 new engine, crank no start, no codes and weak spark right bank of engine
Submitted: 1 year ago.
Category: Chevy
Customer: replied 1 year ago.
2007 Chevrolet Silverado 1500 LTZ 5.3L, V8, Flex, VIN 3, Des LC9, 16V,
Expert:  Ron replied 1 year ago.

Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.

In order for the engine to start and run you need good spark to the spark plugs, injector pulse, proper fuel pressure and good compression, beside one bank having weak spark can you also check for injector pulse as well as proper flue pressure and compression and post back with your results and we can work from there.