Pearson Boats - Common Systems > Engine and Drive Train

gallons per hour

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Alma:
After this question last week I revisited the ignition timing on my A4.

Being a hot-rod I always bump the timing as high as the motor likes without regard to factory specs. So last weekend I backed it off a tiny amount to see if it would decrease my oil consumption. Do any of you have the aftermarket PVC kit? I do, and although it keeps the boat and engine compartment smelling fresh- I believe it increases oil consumption. A knowledgable motorcyclist I know said engines like A4 and aircraft engines should not have PVC because of their constant load running conditions. Ideas? I can burn a quart in 8 hours if I am crashing into a head sea... There is no evidence of smoke, sheen on water or oil in bilge and spark plugs are even and clean. I know an engine with timing too far advanced will consume oil so I am not only looking for smoothness (the companionway ladder is a good gauge) but a reduction in oil consumption. I use 40W and change it at each tankful of fuel (30 hours). The engine is smooth and powerful so adding oil is only a small inconvenience.

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