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04-28-2014, 09:02 AM
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Registered User
Join Date: Jan 2014
Location: Tulsa, OK
Posts: 360
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Backfire help
I finally completed my engine break-in. Now that I can get in it a little, it backfires anytime i tromp on it. As long as I don't give it more than about half throttle it runs great, but any more and it pops and farts through the carb. I have tried different metering rid/step up spring combos, changed the rear jets out from .98 to .101. I have tried changing the timing 8, 12, 14, & 16. The plugs are a near perfect tan color.
GM crate 350 (260hp) Eddy 600cfm (1406) HEI (accel coil) New plugs/wires Looking for some ideas. Thanks in advance.
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-Jason USN Retired |
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