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flat spot on street rail
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Author:  ROCKITV8 [ Thu May 01, 2014 4:01 pm ]
Post subject:  flat spot on street rail

I just rebuilt my Webber 2BL Progressive carb and have a major flat spot as soon as I go to take off (have to pedal it to go) even after each time I shift it falls on its face. I did not buld the motor, it is a 1500 with dual port heads, Scat intake, points dist. has bigger cam ???, I just got a electronic dist. to put in soon. Does anyone have any ideas??

Author:  bige70chevy [ Thu May 01, 2014 4:06 pm ]
Post subject:  Re: flat spot on street rail

timing? accelerator pump?

Author:  ROCKITV8 [ Thu May 01, 2014 4:33 pm ]
Post subject:  Re: flat spot on street rail

I played with the timing bck and advanced, didn't help. The acc. pump is brand new

Author:  hpfreak [ Thu May 01, 2014 6:41 pm ]
Post subject:  Re: flat spot on street rail

if its popping through the carb when it does it its a fuel if not its a timming issue. probably not advancing correctly and your new distributor may take care of it.

Author:  ROCKITV8 [ Thu May 01, 2014 7:42 pm ]
Post subject:  Re: flat spot on street rail

it's not popping so I am hoping the dist. takes care of it. Hoping I can get it done this weekend. Thanks

Author:  shadetree [ Thu May 01, 2014 8:41 pm ]
Post subject:  Re: flat spot on street rail

Check the idle jet on front side of carb toward the shroud. If it's plugged you got a flat spot.

Author:  2800passat [ Thu May 01, 2014 9:40 pm ]
Post subject:  Re: flat spot on street rail

Squirter not opening as fast as the secondary butterfly?

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