engine have back fire

1995 FORD FALCON
250,000 MILES
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CHANGTE
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I have a ford ef falcon 1995, it used lpg and petrol.
now when I switched from petrol to lpg, the engine have big back fire.
where should I adjust?
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Jul 26, 2012 at 1:22 PM
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ASEMASTER6371
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what upgrades to the fuel control system have you done to accept the changeover??

Roy
Jul 26, 2012 at 1:57 PM
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MHPAUTOS
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EFI backfire on these cars is usually due to poor ignition lead leaking voltage where they are bundled in threes,and causing the back fire, very common problem, if yours is the early version with distributor, replace cap and leads as well.
Jul 30, 2012 at 11:51 AM
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