140hp evinrude sneeze and idle

[toey1977]

just rebuilt carbs in the motor now I get a sneeze when starting so I have 2 new manifold gaskets to get on but need advice on how to check and set timing and advance also some advice on what else i should be checking/adjusting at the same time. added footage to hopefully help diagnose.

 

[racerone]

The basics are done first.-----Compression test.----Then check and see if spark will jump a gap of 7/16" on each lead.-----Checked for crankcase compression issues ?-------What led you to believe carburetors needed rebuilding ?

 

[toey1977]

The basics are done first.-----Compression test.----Then check and see if spark will jump a gap of 7/16" on each lead.-----Checked for crankcase compression issues ?-------What led you to believe carburetors needed rebuilding ?

dont have a comp tester to check that atm but was told all cylinders are 140psi (so skeptical on that from guy i got boat from and comps to perfect) carbs got rebuilt because it apparently hadn't be used for a couple of years and seals were squashed gaskets were soaked in fuel, will go buy a spark tester and possibly a new comp tester as mine blew the hose trying to test it (old tester). why not rebuild carbs on a motor that has sat for extended periods, plus was original advice from i boats users when i got the boat a couple of years ago this is its second season on the water. it runs strong up higher in the rpm sounds grunty and eager to rev

 

[toey1977]

oh if it also helps its a 86 looper

 

[Bosunsmate]

It may of just being a bit cold on start up.
Check your spark plugs, see if any are different than the others