Engine start
 

A rather dumb question

Why is engine number 2 usually started first on the 737NG?
My guess - just to check if the isolation valve is working properly or not..

Use the search function.

I have always found the search function on PPRUNE rather poor.

For reference, could you please advise how you would best use the search function in order to find the answer that the OP seeks.

You use Google: type in the query you need and add "site: pprune.org" (without quotation marks).

And you couldn't check this by moving it from Auto to Close?

Now how do you use the search function in an engine start ?:p

Try 'start sequence b737' in the search function and click on posts...