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Old 03-04-2012, 03:33 PM   #1
Fiftydriver

 
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Drives: 2010 Camaro 2SSRS RJT L99
Join Date: Jun 2010
Location: Fort Shaw, Montana
Posts: 1,242
Magnuson SC Fuel Block leak problem...

To all,

I have had my L99 in storage for the winter, every couple weeks I would start the car up and let it get to temp. The day after doing this, I would go into my shop and smell a very strong gas smell but could never find out where it was coming from. I never really could smell anything driving the car but when walking around the car I could always get a wiff of gas smell.

Well, last week I really looked into the issue. Finally found the problem. There were 1 to 2 drops per second, dripping out from the bottom of the fuel block which is mounted on the passenger side fuel rail.

It is dropping between the intake manifold and head and evaporating when the car is warm but would continue to drip until fuel pressure dropped in the system which was resulting in the fuel smell the day after.

Today I pulled the fuel block and replaced the O-ring and reinstalled the block. The original o-ring looked perfect, no nicks or cuts of any kind but still figured that must be what it was. NOPE!!!

Got everything bolted back on and turned the key in the ignition to the on position to just wind up the fuel pump without starting the engine. Still dripping just as before........

Pulled the block off again and this time noticed the plug screw on the bottom side of the fuel block. Could the leak be coming from this instead of the o-ring???

HOW IN THE HELL would one get under the block with it in stalled ot see if the leak is actually coming from the o-ring or from the plug screw? The plug is tight, in fact I could not break it loose. Was just going to pull the plug out and reseal it to make sure it was not the problem but could not get it loose.

So, I need to find out where the leak is coming from, o-ring or plug screw.

Any ideas on how to see which is which???

Got to get this fixed, getting time to get her out for spring!!!

Thanks for your time and help.
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Fiftydriver

2010 SSRS, RJTC, L99, Maggie 2300 SC, 3.4" pulley, Roto-Fab CAI, Dynatech Supermaxx LT headers, Dynatech High Flow cats, Corsa Cat back exhaust, Dual Elite Engineering catch can, MSD wires and Jannetty custom tune, JRE custom diff w/ posi mod, 3.91 LPE gears, Pfaht trailing arms, Pfaht trailing arm and Diff bushings, drop springs and sport sway bars front and back, Fesler dual guage pillar pod w/ AM Cobalt Boost and A/F guages.

More to come!!
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