Heavy acceleration rough idle

2008 FORD FALCON
490,000 MILES • 4.0L • 6 CYL • 2WD • AUTOMATIC
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BLAKE WILLIAMS
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I have a BF Falcon MKII lpg factory inline six.
At the moment i have noticed under heavy acceleration it will rev normal but does not have any power. it will accelerate normal whilst driving casually only suffers at top end power. When i slow down doing less than twenty kph the car will shake only after slowing down after heavy acceleration.
Aug 1, 2017 at 6:51 PM
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STRAILER
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Hello,

A couple things come to mind, first is the spark plugs are starting to wear causing the problem.

Here is a guide to help you with that:

https://www.2carpros.com/articles/how-to-change-spark-plugs

Next would be to read the trouble codes from the computer.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please let us know what happens.

Cheers, Ken
Aug 3, 2017 at 11:22 AM