engine stutter upon advancing throttle

[Guest]

Re: engine stutter upon advancing throttle

Exactly as you say Darryl and color centerfold even shows those tiny bubbles in the metered fuel path.

Good point on the shutdown too, that did get overlooked.

Dave

[crispy critter]

Re: engine stutter upon advancing throttle

Turning propellers and screwdrivers forward of the firewall at the same time mix about as well as a rat jumping into a box full of starving rattle snakes. The rat MIGHT make it out before it gets bit but is it really something you want to try?

[dewhitaker]

Re: engine stutter upon advancing throttle

Hey gang, here is something to look at. Thanks Dad!

[N74DV]

Re: engine stutter upon advancing throttle

opened the knob 1/4 turn and flew today. Much better. Thanks guys!

[Forrest Barber]

Re: engine stutter upon advancing throttle

If it has the correct jet , venturi, not worn etc.... ; 2 1/4 turn out is the starting point and then go 1/4 turn at a time to get it right.

[VictorBravo]

Re: engine stutter upon advancing throttle

One thing to note in more detail is that a Taylorcraft gives you several good opportunities to damage your airplane and/or yourself while adjusting a running engine. The rat and the rattlesnakes is indeed a good comparison.

Not only do you have to worry about getting hit by the prop, but you have to worry about having the cowling damaged EITHER by trying to reach through the right side top cowl opened up (with you about a foot away from the prop), or by trying to run it with the lower cowl removed (where the whole cowl system is loose and not stable). A scratched up nose bowl and maybe some dents would result very easily.

With the idle mixture screw, fortunately I think it is possible to access it from behind and underneath the cowling with some degree of safety. A long 1/4" socket extension with a universal joint and some kind of a screwdriver bit can probably be clamped or wired into position on the idle screw BEFORE the engine is started, with the ratchet handle about a foot behind the lower cowling. If my suspicion is right, you can access this laying on the ground behind the landing gear, with at least three feet from the propeller to your nearest body part.

The idle speed screw would be possible to adjust with only one cowl removal. Back the screw out TOO far (meaning the idle speed is too slow), put the cowl on and run the engine. Start backing the throttle until you get to the right idle speed (something like 520-550 RPM). When you get the right idle speed, clamp the throttle tightly closed with the friction lock. Stop the engine, take off the cowl, and adjust the stop screw until it touches the throttle arm on the carburetor and you're done.