Quote:
Originally Posted by strat61caster
There has to be a pump close to the engine to maintain the 3,000+ psi required for current direct injection systems. This isn't a Toyota thing, many manufacturers have similar systems, and to be fair none of Toyota's systems sold in the 86 have failed at all.
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I understand the reason for the hpfp. My point is that if the engine only ran port injection, there would be no need for the hpfp. Other cars with hpfp's don't chirp so yes, it is a Toyota D4S thing. And just to be clear, I know D4S exists on other cars. I'm referring to the fact that it's a system designed by Toyota and obviously poorly designed for our cars. I have not heard chirping on an is350 or gs350, both have D4S systems.
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