srx loses cyl well climbing or labouring

[grizzlyrunner]

01 srx 700 seems to lose a cyl well climbing held or deep snow whene labouring hard cuts out, stop for a bit runs mint bottom to wot, runs good on trail, get halfway up a big hill and loses cyl, plugs not wet changed reeds one was chiped, powervalves are clean, what you guys think?

 

[tomseal6]

you asking us to take a few stabs? here goes.

fuel filter, fuel leak, exhaust deflector, missing or damaged plastic well around main jets