Startup Knock with Napa Gold

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Originally Posted By: Dyoel182
Originally Posted By: MysticGold04
I forgot to put the model... 51040 Napa Gold. I believe the bypass is located on the engine, not the filter.


There might be one in the filter as well. Though the drainback valve is what would make the engine sound bad on startup, not the pressure bypass.


These filters are used on all the GM V6s. There is no bypass on these filters, it is built into the engine. I have used the Napa Gold 51040 with great luck.
 
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