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Dave Nova
Dave Nova, Buick Technician
Category: Buick
Satisfied Customers: 1808
Experience:  ASE Master Certification. GM World Class Certification
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Buick Lasabre: 2000 lasabre no start has spark, power to gray

Customer Question

2000 lasabre no start has spark, power to gray wire at pump pump seems like it is working but not sure
Submitted: 1 year ago.
Category: Buick
Customer: replied 1 year ago.
2001 buick lasabre on start eng cranks, has spark, power to pump
Gray wire pump appears to work makes sound
Customer: replied 1 year ago.
Did not check fuel press
Expert:  jazzmaster replied 1 year ago.
hi, you need to check the fuel pressure even though you can hear the pump the pressure should read 47-55 psi when you first turn the key to the run position and stay with in those specs for at least 10 minutes it may drop 10 psi after a few seconds but that is normal
Customer: replied 1 year ago.
How do I do that
Expert:  jazzmaster replied 1 year ago.
there is a schrader valve on the fuel rail -like a bike valve it usually has a cap on it ,so take that off and install a fuel pressure testing gauge/tool to it you can rent/loan a tool at many auto parts store if you dont have one ..
Customer: replied 1 year ago.
Turn key , press goes to about 47 then down to 40 and stays
Expert:  jazzmaster replied 1 year ago.
will the car start if you spray carb cleaner into the throttle body ?
Customer: replied 1 year ago.
No tried starter fluid
Expert:  jazzmaster replied 1 year ago.
ok,unplug the mass air flow sensor and see if it starts, did you get any check engine codes before you do this ..
Expert:  jazzmaster replied 1 year ago.
hi, do you still need help ?..jazzmaster

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