Injection Question

kart31rac · 4/17/13, 11:43 AM

I have been fighting this for a couple of weeks. Car starts up and runs fine, on the track is fine, but when you kick it out of gear it dies. Just wont idle I know that all of my pressures are right, may be one of my bypasses is not shutting or opening. Any help would be great, Low budget 305 guy.

Thanks

Thejvillejet · 4/18/13, 12:29 PM

Check to make sure your bypasses are all in the correct direction. Especially the low speed.

TQ29m · 4/18/13, 1:54 PM

Your idle bypass may be either too high, rich, or too low, lean, or your idle adjustment may be too low, not enough air past the shutters. I don't run an idle bypass, I just set the barrel valve a little rich, and run idle off of it, sometimes the idle pressure is too low from the pump, for the bypass to be able to control it, especially with a poppet type bypass, and yes, I know, it will be rich when you get back in the throttle, so I just trail brake it a bit, and add a little throttle, and it works OK, then it is clear when you pick up the throttle on a restart, or if you get a bit held up in a turn. Bob

4/18/13, 1:54 PM	#3 Re: Injection Question
TQ29m Senior Member Join Date: Aug 2008 Posts: 6,579	Your idle bypass may be either too high, rich, or too low, lean, or your idle adjustment may be too low, not enough air past the shutters. I don't run an idle bypass, I just set the barrel valve a little rich, and run idle off of it, sometimes the idle pressure is too low from the pump, for the bypass to be able to control it, especially with a poppet type bypass, and yes, I know, it will be rich when you get back in the throttle, so I just trail brake it a bit, and add a little throttle, and it works OK, then it is clear when you pick up the throttle on a restart, or if you get a bit held up in a turn. Bob __________________ "Being old, isn't half as much fun, as getting there"! Ole Robert I!

4/17/13, 11:43 AM	#1 Injection Question
kart31rac Senior Member Join Date: Jun 2010 Posts: 323	I have been fighting this for a couple of weeks. Car starts up and runs fine, on the track is fine, but when you kick it out of gear it dies. Just wont idle I know that all of my pressures are right, may be one of my bypasses is not shutting or opening. Any help would be great, Low budget 305 guy. Thanks

4/18/13, 12:29 PM	#2 Re: Injection Question
Thejvillejet Member Race Count This Year: 2 Join Date: Apr 2013 Posts: 1	Check to make sure your bypasses are all in the correct direction. Especially the low speed.