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Backfire into intake
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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George 74 911 Racer 08 Spec Cayman Racer 76 914 Cruiser |
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04-13-2020, 06:34 AM
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The motor is 2l with FI.
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George 74 911 Racer 08 Spec Cayman Racer 76 914 Cruiser |
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04-13-2020, 08:58 AM
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Join Date: Jun 2002
Posts: 893
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The culprit is certainly attributable to the vehicle having sat for soo long. Sea foam is some amazing stuff. Add a pint to the engine oil as well as a pint into the fuel tank. That should clean up some sticking injectors, clear out any gunk on the valve stems and lifters. It might take a little time after running the car but it will clear up.
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04-13-2020, 12:05 PM
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