What's your startup ritual?

[LQQKatJon]

I really value simplicity, so I'm staying away from fuel injection systems for the 455. That said, I really can't stand the looks of concern you get when your 53 year old Motorhome cranks for more than 10 seconds. it's even worse when the damn v-belts squeal. I would love to do a serp-belt setup one day

For a carb gmc(mine for the first 9 years, and others i drive occasionally)

The aux fuel pump deal works great.

So switch the tank to aux. hear the pump. Press the gas pedal a few times. (3 works on most). Then start
It up. After it running, switch gas to main. It is good to “prime” the carb. But very good to give that electric pump some exercise as well as the selector valve. Usually starts quicker..





My coach has efi now. So I just start it and drive.

 

[mech0001]

Keith,

Not my work.I cheated and copied off the computer.

Carburetors deliver fuel at significantly lower pressures than fuel injection, creating a more pronounced pressure drop as the fuel expands through the venturi. This rapid expansion and the subsequent vaporization (evaporation) of the liquid fuel cause an endothermic (heat-absorbing) chemical state change, which heavily cools the incoming air-fuel mixture.By contrast, modern fuel injectors operate under much higher pressures and are typically mounted directly into a hot engine block or cylinder head, absorbing more radiant engine heat before the fuel ever atomizes.

You take care and have a wonderful evening.

By the way , after five years , i'm still in love with my micro level.

Take care,
Tom K

Don't forget the fuel supply to a port injection system has continual flow. The fuel will probably absorb some heat but is being refreshed often enough to minimize that issue.