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Ask Dave Nova Your Own Question
Dave Nova
Dave Nova, Buick Technician
Category: Buick
Satisfied Customers: 1808
Experience:  ASE Master Certification. GM World Class Certification
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No fire from coils, 2004 buick lesabre 3800 v6, fuel pump

Customer Question

no fire from coils
JA: What is the model/year of your Buick?
Customer: 2004 buick lesabre 3800 v6
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: fuel pump buzzing put wire and spark plug on coil wont fire
JA: How many miles are on the car? Is this the original fuel pump?
Customer: 180000yes original
JA: Anything else you think the mechanic should know?
Customer: will fuel pump weak stop firing
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Buick Mechanic about your situation and then connect you two.
Submitted: 1 year ago.
Category: Buick
Expert:  Gary replied 1 year ago.

I am sorry for the long wait

do you know what the fuel pressure is key ON engine OFF ?

does it have an injector pulse when cranking it over ?

any codes set in the computer ?

Customer: replied 1 year ago.
10 lbs no no
Customer: replied 1 year ago.
any answer or are you out to rip me off like the other 2
Customer: replied 1 year ago.
that's what I thought another rip off thanks for taking my money and not helping
Expert:  Gary replied 1 year ago.

rip you off how so ?

takes a few minutes to type back to you please be patient

we need to ask alot of questions sometimes before we can give you an answer as many things can cause this issue

first off 10 PSI is way too low for fuel pressure for this engine

and with NO spark when cranking it over we need to see if we have a crank RPM reading in the computer when cranking it over with a scan tool

Customer: replied 1 year ago.
will low fuel pressure keep from firing
Customer: replied 1 year ago.
Customer: replied 1 year ago.
did you fall asleep
Customer: replied 1 year ago.
I didn't figure you knew what you were doing 5 stars my ass