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Unread 05-22-2009, 05:39 AM   #1
84MSRB
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1984 CJ7 
 
Join Date: May 2006
Location: OH-IO
Posts: 749
What do these headers tell you?

These are shots of the shorty's on the SBF. This thing hasn't run very much at all- and hasn't really been revved up yet. I'm fairly confident that this is not normal.
Driver's side:


Passenger side:


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1984 CJ7 Mud Slingin Rust Bucket
90 YJ tub
Ford Mutt 5.0( 69 block, 89 EFI)
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Unread 05-22-2009, 07:27 AM   #2
gmakra
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1985 CJ7 
 
Join Date: Jun 2008
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Posts: 2,873
It would seem you have a fuel delivery issue, your running way lean on those cylinders.

It going to take some inspection to find the cause.
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Unread 05-22-2009, 08:04 AM   #3
Mike Romain
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1986 CJ7 
 
Join Date: Nov 2007
Location: Off the Grid in Chester Grant, Nova Scotia, Canada
Posts: 13,775
Too lean (or right) on some and too rich on others I would guess. Old injectors sticking open would be my thought. A leak down on the fuel pressure would tell you. If it drops fast after a shutdown, the injectors could be leaking.
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86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
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Unread 05-22-2009, 12:26 PM   #4
Pathkiller
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What do the spark plugs tell you from the corresponding cylinders?
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Unread 05-22-2009, 03:35 PM   #5
84MSRB
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1984 CJ7 
 
Join Date: May 2006
Location: OH-IO
Posts: 749
Haven't had time to check yet- but since baseball season is over, I got time to do just that. Not sure about this weekend, but I got time since the driveshafts are still on the back porch.
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1984 CJ7 Mud Slingin Rust Bucket
90 YJ tub
Ford Mutt 5.0( 69 block, 89 EFI)
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