2007 GMC LBZ - Nictane CAT Fuel Filter Adapter
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2007 GMC LBZ - Nictane CAT Fuel Filter Adapter
I recently just threw on my Nictane CAT Fuel Filter and I'm having some issues with the vacuum number being WAY out of spec...GM Spec should be around 2-3 inches of vacuum and I'm getting upwards of 20in of vacuum! Are these 2 micron filters know to cause such drastic strain on the factory pumps?! What is suggested I do?
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