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Author Topic:   carb adjustments
BIGG C
Dirt Maniac

Total posts: 114
posted June 19, 2003 09:06 PM  
We are building our first ministock, 84 mustang 2.3 with fuel injection intake 1 inch carb spacer street header and motorcraft 1.08 2-barrel with powervalve blocked off, #51 ford jets. car will start and idle, after warming up, will surge up and down about 300-500 rpms. when reved-up will run cleanly and then will come back and go dead. will imediately crank back up and idle with surge up and down 300-500 rpms. TFI ignition,charged hot battery, no alternator, electric fan on or off no difference. HELP Thanks BIGG C

6j
Dirt Newbie

Total posts: 1
posted July 04, 2003 07:38 AM  
check to see if your idle system is adjusted properly.

gonfast
Dirt Full Roller

Total posts: 67
posted July 22, 2003 08:47 PM  
bring your jets up to 68-70's and get that tfi out of there. lock the mechanical weights and set the timing at about 34 degrees btdc

b4racing
Dirt Forum Champ
Total posts: 626
posted July 22, 2003 09:11 PM  
why get the tfi out I love mine less of a head ache than that duraspark and the timing is already advanced. Also what is your timing and do you have any vaccum leaks. BObby

towmandan
Dirt Freak

Total posts: 370
posted July 22, 2003 09:36 PM  
Im going with b4racing sounds like youve got a vaccum leak I would check your spacer plate first let us know what you find out....Towman

BIGG C
Dirt Maniac

Total posts: 114
posted July 23, 2003 09:51 PM  
TFI all the way. I have searched for vacuum leak 3-4 different times, even going under the intake. Changed plug wires, BINGO also drained and changed to a fuel cell from a boat tank. Runs good now. Ford jets are hard to find, so I drilled them out to 1/16 to rich for stock motor. I then used soft plumbing solder to fill the hole. I then used a # 71 drill bit to drill the solder out. If to big, remelt solder and get another drill bit. BIGG C

b4racing
Dirt Forum Champ
Total posts: 626
posted July 24, 2003 12:25 AM  
easy fix to your carb problem. Take and drill and tap your ford jets then loctite them suckers in the carb and use holley jets Then you have the best of both worlds. BObby

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