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2007 Chevy impala 3500 v6 148.000 mi., driving along and car

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2007 Chevy impala 3500 v6...
2007 Chevy impala 3500 v6 148.000 mi., driving along and car just quite running, tried turning over started for a minute but no power when accellerated and stalled , now it will not start, cranks but no start. I have koeo 60 psi. drops to 52 psi and holds. I have spark checked cyl. 2,4,6, with a spark tester in line. have a code p0300, checked engine data cyl. 1 & 2 showed history of misfire 278 ea. , check compression on cyl. 1 , 200 psi and 3 other cyl. had some misfire but very little
Submitted: 1 year ago.Category: Chevy
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Answered in 47 minutes by:
10/9/2016
Chevy Mechanic: Dan, ASE Certified Technician replied 1 year ago
Dan
Dan, ASE Certified Technician
Category: Chevy
Satisfied Customers: 1,697
Experience: Auto Technician
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Hello my name is***** am an ASE Master Technician and I am glad to help you out with your question.

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Chevy Mechanic: Dan, ASE Certified Technician replied 1 year ago

Have you checked injector pulse?

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Customer reply replied 1 year ago
need to take intake off to do that
Chevy Mechanic: Dan, ASE Certified Technician replied 1 year ago

Sprays some starter spray in the intake and see if it runs.

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Customer reply replied 1 year ago
starts right up with power
Customer reply replied 1 year ago
that was with the starting fluid
Chevy Mechanic: Dan, ASE Certified Technician replied 1 year ago

Check INJ fuse 1, 20 amp, underhood fuse block.

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Chevy Mechanic: Dan, ASE Certified Technician replied 1 year ago

Also check INJ 2 fuse. Check for voltage at these fuses with the key on.

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Customer reply replied 1 year ago
ink 1 , 10.67. inj 2 , 11.27
Customer reply replied 1 year ago
where is it located
Customer reply replied 1 year ago
is that a 3500 v6
Chevy Mechanic: Dan, ASE Certified Technician replied 1 year ago

Yes

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Customer reply replied 1 year ago
I unplugged can sensor and did not start,
Customer reply replied 1 year ago
are u still there
Customer reply replied 1 year ago
I unplugged the can sensor it did not start, we sprayed starting fluid in the intake and it started , so u would think its fuel related, maybe injectors are plugged up or is there a fuel pressure regulator on this
Chevy Mechanic: Dan, ASE Certified Technician replied 1 year ago

You need to remove the intake and check for injector pulse while cranking.

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Customer reply replied 1 year ago
connected node light cranked it over, node light blinks
Customer reply replied 1 year ago
I only tried one injector connector
Chevy Mechanic: Dan, ASE Certified Technician replied 1 year ago

If you can remove an injector to test the spray. Maybe the injectors are clogged.

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Customer reply replied 1 year ago
I have spray on all injectors
Chevy Mechanic: Dan, ASE Certified Technician replied 1 year ago

If fuel was not the problem, it would not want to run when using starting fluid. It seems to want fuel. So if you have pulse and spray spray at the injectors then it should run.

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Customer reply replied 1 year ago
I'm out of option, I've been thinking all along that it doesn't make since , I've got spark its orange in color and I've got fuel , never experianced this before, I'll put it back together and start over again
Chevy Mechanic: Dan, ASE Certified Technician replied 1 year ago

Fuel, spark, compression, timing.

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Customer reply replied 1 year ago
I should check all cyls. for compression
Chevy Mechanic: Dan, ASE Certified Technician replied 1 year ago

If compression were the problem it would not start with starter fluid.

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Customer reply replied 1 year ago
might have bad gas
Chevy Mechanic: Dan, ASE Certified Technician replied 1 year ago

Were you able to get this running?

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Customer reply replied 1 year ago
not yet, working other cars, but I suspect bad gas, the injector spray looks good
Chevy Mechanic: Dan, ASE Certified Technician replied 1 year ago

How old is the fuel in the tank?

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Chevy Mechanic: Dan, ASE Certified Technician replied 1 year ago

Hello again Dan here,

I am contacting you because the post has not been closed or rated.

This question is coming up on 7 days which means it will time out and close.

You have already paid to get this question answered, but you have not rated.

Let me help some more. Is there anything else I can help you with?

If I did not give you 5 star service, please let me know what I missed.

Thanks

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Customer reply replied 1 year ago
u gave me good service. everything checks out good so now I can look at the gas, I'm putting it back to get her right now and then I'm going to drop the tank and check the gas
Chevy Mechanic: Dan, ASE Certified Technician replied 1 year ago

Ok sounds good, this question will time out tomorrow.

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Customer reply replied 1 year ago
I disconnected fuel line to fuel rail and cranked it and there is a lot of dirt or something so its diffenenly the gas, I'm dropping tank right now
Chevy Mechanic: Dan, ASE Certified Technician replied 1 year ago

Ok yes that could be a problem.

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Customer reply replied 1 year ago
water and dirt in gas tank
Chevy Mechanic: Dan, ASE Certified Technician replied 1 year ago

Sounds like you will get this running soon.

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