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  #16  
Old 01-13-2019, 11:35 AM
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RF Overlord RF Overlord is offline
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kirk, did you put RTV in the dimples at the 4 corners?
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  #17  
Old 01-13-2019, 12:15 PM
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Joe Walsh Joe Walsh is offline
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Quote:
Originally Posted by justbob View Post
Worse yet is they stock the $500.00 fuel injection spider assembly for GMís 4.3 thru 5.7ís too!
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Originally Posted by MyBlackBeasts View Post
That's too funny, I've never seen one fail!
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Originally Posted by justbob View Post
Seriously? I believe Iíve done four now.
The poppets are known for sticking wide open causing long delayed starts and cylinder flooding ultimately causing a no start.
Quote:
Originally Posted by MyBlackBeasts View Post
Well I learned something today, good to know.
With all the 4.3 V6 S10 p/u's, Blazers & Astrovans I've worked on (many with high miles) over all these years, never ran in to it.

Thanks Bob.
Quote:
Originally Posted by decipha View Post
Ive changed my fair share of injector spiders on the 5.7s on suburbans and tahoes in my day. The cylinders usually fill up with fuel and require you to remove all the plugs and spin it over to get the fuel out. The first time I did one was on my bosses truck and the engine hydro locked after I had it all buttoned up and went to start it. I remember my sphincter was swollen shut til I heard it running actually run I was hoping and praying it didn't bend a rod and was half expecting it to hang a rod out the block.

The plastic intakes are pretty common here too. In fact there is quite a few that still make it to us with stock plastic intakes.
WOW!

Blast from the past!

My '96 S10 4.3L Vortec ran like a top until about 200K miles.
Then it started to idle roughly and get really crappy gas mileage.
Did some research and found out about the bad fuel injection spiders.
Wasn't going to bother with that mess, so I drove it for another 35,000 miles and sold it.

BTW: My brother has done the leaking plastic intake (recall) on his 2000 CV.
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SOLD : 2003 Mercury Marauder FI. 4 speed Auto
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Extrude honed intake w/PHP spacer.
Kooks Headers w/2.5" High Flow Cats & X-Pipe, Magnaflow mufflers, OEM tailpipes w/Megs Tips
B&M Trans cooler w/fan, Level 10 Shift Kit, Art Carr Hughes Deep Sump Trans Pan,
SVO Rearend Girdle, Redline Gear lube; OEM 3.55s
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  #18  
Old 01-13-2019, 01:01 PM
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kirk kirk is offline
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Quote:
Originally Posted by RF Overlord View Post
kirk, did you put RTV in the dimples at the 4 corners?
Don't know what you're referring to? No RTV, unit comes with seals.

Could be I should have replaced a couple more injectors.
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#168
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  #19  
Old 01-13-2019, 03:09 PM
decipha decipha is offline
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I would first clean the maf and replace the o2s
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  #20  
Old 01-13-2019, 03:18 PM
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Quote:
Originally Posted by decipha View Post
I would first clean the maf and replace the o2s
Many of the injectors were really dirty. The one I changed had stuff over the tip (making me wonder how it ran as well as it did). I think my cleaning may have done more harm than good on others. Could I have plugged one of the three nozzles? Would cause symptoms I'm having.

174k on likely original injectors that were filthy. I'll change a couple more I think.
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#168
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  #21  
Old 01-13-2019, 07:31 PM
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02 sensors are doing their job saying you have a vacuum leak.

Spray starting fluid, youll find it
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  #22  
Old 01-14-2019, 08:27 AM
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Quote:
Originally Posted by Turbov6Bryan View Post
02 sensors are doing their job saying you have a vacuum leak.

Spray starting fluid, youll find it
I hear you guys

I'm still looking

Thanks
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1963 Marauder S-55, Super Marauder 406
Only factory 406 powered Marauder, and earliest built Marauder documented to still exist.
https://sites.google.com/a/wmich.edu/supermarauder/
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First retailed 2003 Marauder
Bought 6 June 2002
#168
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  #23  
Old 01-14-2019, 10:07 AM
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RF Overlord RF Overlord is offline
73 is the best number.
 

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Quote:
Originally Posted by kirk View Post
Don't know what you're referring to? No RTV, unit comes with seals.
It may not be a thing with the 5.4, but the Dorman 4.6 manifold comes with instructions to put a dab of RTV in the gasket-locating dimples in the corners of the heads to prevent vacuum leaks.
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  #24  
Old 01-14-2019, 11:05 AM
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Quote:
Originally Posted by RF Overlord View Post
It may not be a thing with the 5.4, but the Dorman 4.6 manifold comes with instructions to put a dab of RTV in the gasket-locating dimples in the corners of the heads to prevent vacuum leaks.
Could be my problem, hope not
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1963 Marauder S-55, Super Marauder 406
Only factory 406 powered Marauder, and earliest built Marauder documented to still exist.
https://sites.google.com/a/wmich.edu/supermarauder/
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First retailed 2003 Marauder
Bought 6 June 2002
#168
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  #25  
Old 02-03-2019, 01:59 PM
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PVC hose at the valve
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Only factory 406 powered Marauder, and earliest built Marauder documented to still exist.
https://sites.google.com/a/wmich.edu/supermarauder/
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#168
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