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> Backfire in the throttle body
gjames
post Apr 13 2020, 08:29 AM
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My 914 had not run for 3 years. I soaked the cylinders in WD40 for a couple days before starting. I discovered heavy rust in the fuel tank so I replaced:
Tank, hoses and pump.
Injectors and engine bay fuel lines
And Flushed the long fuel lines until they ran clean

The engine started but there was no power, poor idle
I Replaced:
Points/plugs/condenser/coil.
Reset timing and idle (The dwell is no high side- 58)

Power is back and idle is good.

The Problem:
When I give it gas, it will back fire into the throttle body. It seems to happen a 2k - 3k rpm range. It's doesn't happen every time.

Ideas?
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