Ibhad my share of problems starting after a lot of stuff trials and errors installed a slick start.
She starts every time hot or cold
Alot of folks have Ideas but putting enough spark on the plugs helps the engine start
Cold starts. Fuel oump on for about 2 seconds
Mix rich theottle 1/4 open firesnoff on about the secound blade
Blip the fuel pump a nani second
mixture idel cutoff
Throttle about half open
Crank as reduce throttle toward idle as engine fires at some point during the throttle reduction slowly put mixture in
Thats it works fine if the battery is good
Pull a couple botton plugs and check for led deposits. If you see leadnin the plugs lean aggressively on the ground
Check injector nozzles for trash. It will cause your 4!cylinder engine to really miss behave
Hope part of this helps
Smilin' Jack & Anita Hunt
N507H RV7, KJZP Jasper, GA
Retired Corporate Pilot CFI-AI, MEL
CE500, LRJT, HS25, C650, SBJT, CL60
Hunt Aviation, LLC.
Pilot Service, IPC's Biennials.