Hi there,

This is just at the whim of the designer i feel, some cars just use a cold start injector which makes it richer (like an old choke system, others use a idle air by pass system which is more complex and costs more, some of the systems are a nightmare to get right (early Nissan) while Toyota (cold start injector) is a dram and realy give a problem. I don.t know why there are so many different systems about, but i know one thing, each company will say theirs is the best.

mark (mhpautos)

Answered by mhpautos (expert)
26,884 answers provided