Its not the phasers, no other tivct ford engine has this specific 2k rattle. Yet they have the same phasers. All 3 gens of coyote have different tivct systems and phaser designs.
Looking at doing a radium hat and looking for opinions on on pumps. Is twin 274s enough on e85 to support 900whp? Brushless ti e5lm pump looks like a solid option but any one have experience with it? Looking for a reliable setup i put a ton of miles on my car. Car is a 19 gen 5 whipple.
The purge valve is always closed when the engine is off. The vent will be closed most of the time engine off. Most cars run a small leak test after a specific drive cycle and key off using the contraction off the fuel and watching the ftp sensor. The vent will very rarely open to the atmosphere...
So you berated the service writer for not knowing what happened to your diff fluid for 55k miles? It could only be a few things pinion seal, axle seal, diff cover or never filled properly. Its not the service writers job to know the entire saga of your car.
My idler went bad, the bearing race was loose inside the aluminum pulley housing so i could not replace the bearing. I used acdelco 36604 to get me by until the whipple one arrived.
Gen 1 coyotes had more bolts along the rail, gen 2 they removed some bolts but still had the threads in the cylinder head so they released a tsb to drill the valve covers and install bolts. Gen 3 they removed both even tho they knew about the issue. So get a swivel socket and check them often on...