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97 Jimmy no start
12-06-2009, 12:20 AM
As you can see, no start. Just replaced battery (Die Hard) and fuel filter. Checked fuel pressure KOEO was @ 55 PSI and held firm long after key off. My chiltons says 54 psi is good, but here in the forums everyone says 60 min?? Motor is V6 CSEFI. Got dark and havent checked for spark yet.. If I find good blue spark, what next.. If no spark, what next..
12-06-2009, 10:48 AM
Welcome to AF. 65 is the usual pressure for a Vortec set up, but try spraying carb cleaner into the intake see if it kicks.
12-06-2009, 08:32 PM
Wont carb cleaner mess up my O2 sensors ? Anyway, checked for spark and have a nice oarnge kernal, pulled the plugs and they were soaked with gas... Spider assy??
12-07-2009, 08:11 AM
No issue with the o2 sensor, you should have blue not orange spark.
12-07-2009, 09:09 PM
So if I have a weak spark coming out of the coil wire, it should be a bad coil or posssibly corroded battery cables right ??
12-09-2009, 12:04 AM
Tomorrow night I will be doing more testing on batt cable and coil, but I have a question on the fuel pump. I have 55 PSI KOEO and all the threads say to have at least 60. But when I pulled my plugs they were soaked in gas ?? So is my pump good ?????
12-09-2009, 09:34 AM
The the regulator or injector spider under the intake could be leaking causing the low pressure and wet plugs.
12-18-2009, 08:34 PM
Ok, heres a good pic, But does anyone know if this looks like a leaking assy or not ? I'll put up a few more pics..
12-18-2009, 08:59 PM
12-18-2009, 09:05 PM
12-19-2009, 12:44 PM
Lose the Chilton manual... usually they're "OK" for the basic things like oil changes, but don't trust it for anything more, especially when it comes to specifications.
GM factory spec for CSFI fuel pressure is: key on engine off, fuel pump running: 60psi to 66psi, and must remain above 55psi for 3 to 5 minutes after the fuel pump shuts off.
01-14-2010, 09:15 PM
Fixed............Was the cap and rotor... Thanks to all who helped me, espesc ially Old Master....
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