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, 2007 Escalade 6,2L with 180.000km. Engine misfires…

Customer Question
2007 Escalade 6,2L with...

2007 Escalade 6,2L with 180.000km. Engine misfires when cranking, but really wont start. It may idle very rough for a split second. Have a skanner tool and it tells codes: P0449(emission) and P0308 (misfire on cyl 8)

Submitted: 2 years ago.Category: GM
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Answered in 4 minutes by:
2/19/2016
GM Mechanic: GM Tech (Cam), GMC Mechanic replied 2 years ago
GM Tech (Cam)
GM Tech (Cam), GMC Mechanic
Category: GM
Satisfied Customers: 5,834
Experience: GM Grand Master Technician 2007. 14 years experience.
Verified

Hi there, I am Cam.
Can I get your first name please?
I am not sure if you have used our service before or not. The experts here are third party contractors. Myself, I am a GM technician in a Gm dealership. I will be happy to help you. Please understand that my only compensation for the time spent helping you is by your rating of my service in a positive way. The more information you provide, the better the chances of getting your issue resolved. Also please reply if you have any followup questions.
So about your vehicle,

What is the fuel pressure?
Have you done a compression test?

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Customer reply replied 2 years ago
Fuel aboat 55 and fairly steady on crank. No compression test. I was not expecting lack of comp at this milage. Smokes a little from rear exhaust when cranking.
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GM Tech (Cam)
GM Tech (Cam)
GM Tech (Cam), GMC Mechanic
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Satisfied Customers: 5,834
5,834 Satisfied Customers
Experience: GM Grand Master Technician 2007. 14 years experience.

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