Edel 1405

Reply Subscribe

Thread Tools

Search this Thread

Nov 12, 2004 | 09:19 AM

debestuss

Thread Starter

Elder User

Joined: Feb 2004

Posts: 835

Likes: 0

From: Fort Rucker, AL

Edel 1405

I got to thinking about something today. I've heard yall (you all) talking about the primary and secondary jets in the carbs. The carb I have sat for a while and was given to me. I went through it and did a $45 cleanup/rebuild. Now that I think about it, I really can't tell when the 4-barrel is being a 4-barrel. It's the first one I've ever owned so I have nothing to compare it to. Maybe the secondaries are kicking in, maybe not, I don't know. Help.

Nov 12, 2004 | 09:29 AM

Putt

Posting Guru

Joined: Jul 2003

Posts: 2,232

Likes: 1

From: Colville, Washington

If the secondaries are tuned/working properly you should not be able to "feel" them "kicking in". If you feel them, then you have either too fast or too slow of a secondary opening point. ie. you are feeling the rush of fuel when they finally open enough or a bog and then accelerate from too much fuel too fast.
There should not be a definite feeling of the secondaries opening, only a smooth acceleration of the engine from idle to max RPM.BTW, you cannot get the secondaries on a vacuum or air valve type 4bl to open by "winging" the throttle, the engine must be under load.

Nov 12, 2004 | 09:40 AM

Mike G

Postmaster

Joined: Nov 2002

Posts: 3,447

Likes: 1

From: Littleton, CO

If the secondaries are mechanical, have an assistant sit behind the wheel and apply the pedal as you look at the range of throttle motion (best with motor off). If they are indeed vacuum secondaries, same applies only standing to the side with the motor running...

--Mike