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PostPosted: Fri Aug 02, 2019 1:24 pm 
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Year and Trim: 2005 Bonneville GXP
I did the injector test - all injectors were dry when the key turned on - no apparent leakage.

- Rich


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PostPosted: Fri Aug 02, 2019 4:16 pm 
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Year and Trim: 2004 Pontiac Bonneville GXP
Still does not confirm the injector is operating the way it should, but good that it's not leaking. Key off, jump the relay terminals. Pull the starting relay and touch a jumper wire across the two terminals (diagram on relay itself). It will only crank as long as you jump it with that wire and with the key off it will not start.


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PostPosted: Mon Aug 05, 2019 11:51 am 
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Year and Trim: 2004 Pontiac Bonneville GXP
Since this thread is public, I might as well say it. The OP did a compression test and found 0 PSI on cylinder #6. 11 years in the business and this has never happened to one of my builds.

Since no "clang-bang" noises were heard, I assume the only way this is possible is if two roller finger followers fell out of position. Either a bad bearing inside the RFF or hydraulic lash adjuster failed to pump up and take up slack. I have seen RFF's dislocated twice on a Northstar. This is the first time on one of my builds, if I am right about the cause.

Due to a foot injury I can't take care of this immediately but I will ASAP so that Rich can enjoy his car again.


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PostPosted: Mon Aug 05, 2019 12:21 pm 
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Year and Trim: 2005 Bonneville GXP
All I can say is stuff happens... It's mechanical - anything can happen and can go wrong. I am an IT consultant - believe me I have seen it all with computers. Jake, if there is anything I can do ahead of time to prepare let me know. Or if there is anything I can do to somehow confirm your suspicions. Either way, yes looking forward to getting it running again.

Rich


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PostPosted: Mon Aug 05, 2019 2:16 pm 
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Location: CHICAGO
Year and Trim: 2006 STS-V, 2004 GTO, 2009 G8 GT
I'm glad it was found and hopefully no further damage is a result. No one here is going to hold it against you Jake. For what you have done for N*'s, stuff happens that is out of your control.

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Retired Bonneville Owner and former GM Tech:
2004 Pontiac Bonneville GXP: Black/Ebony *SOLD*

Summer Toys: Combined 827 RWHP / 877lb/ft RWTQ
2004 Pontiac GTO: Impulse Blue Metallic/Black/M6: lots 'o mods, 415 RWHP / 405lb/ft RWTQ!
2006 Cadillac STS-V: Light Platinum Metallic/Light Gray/A6 - Spectre CAI, Magnaflow exhaust, Speed Inc. tune, 412 RWHP / 472lb/ft RWTQ

Daily Drivers:
2015 Chrysler Town & Country Limited Platinum: Mommy's NEW RGC
2007 Chrysler Town & Country Limited: Daddy's beater affectionately called the Rolling Garbage Can or "RGC" for short
2009 Pontiac G8 GT: L76, Sport Red Metallic
2009 Chevrolet Impala SS: LS4 V8, Victory Red
1999 Chevrolet Suburban: Sunset Gold Metallic - Daddy's winter beater and plow truck


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