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Thread: 307 rattles when cutting off!!!!!! Help!!!!!

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    Default 307 rattles when cutting off!!!!!! Help!!!!!

    I have a 87 Cutlass Supreme 105,000 miles original motor. what does it mean when your engine rattles like it's struggling to cut off?

  2. #2
    Administrator 88hurstolds's Avatar
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    It's called dieseling which means excess fuel is draining into the cylinders due to the carb leaking fuel (needs a rebuild) and then being ignited by the excess cylinder heat due to running way to hot. I believe it can also be caused by poor cylinder pressure.
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