BillysBuggy

I use a toggle switch and a momentary push button to start my engine (its in a truggy) Is there any reason that I shouldn't hard wire the cold start circuit by bringing power to the black wire on the injector and grounding the green wire on the timer? The power would be coming from the push button so that it only has power when the starter is engaged.

scope103

My guess is that you'd have a pretty good chance of flooding the engine, especially when it's warm. With the CSI hard-wired to the starter, you'd have a tough time clearing that if it happened.

This explains the function of the CSI timer. http://www.autoshop101.com/forms/h22.pdf

BillysBuggy

I couldnt get the link to work, would it flood even with the timer connected and power coming from start button.

scope103

The idea of the CSI timer is 1) CSI only on with key in "Start" (you've got that figured out), 2) No matter how long you crank, the CSI is only open for a "short" period of time. Then it closes. 3) The length of time the timer runs depends on coolant temp and (to a lesser extent) air temp - warm engine, not on so long.

If you hard-wire the CSI to the start circuit (push-button in your case) you lose #2 and #3. If your truck starts right up every time it doesn't matter. But if there ever comes a time when you have a long crank, I'm guessing it could flood.

BillysBuggy

Well its never started real fast. I guess I could just try it out with the injector out of the intake. And see how long it stays on, is there any control from the computer? If there is that will add a new problem to figure out.

scope103

No ECM signal.

Why do you want to do this? I assumed you had a broken CSI timer and wanted to avoid fixing it.

BillysBuggy

No the timer and the injector ohm within spec. But the PO bypassed the key switch and wired it to run off the a toggle and push button. And takes little cranking to get it to start. So I was hoping that hooking up the start injector this way would help with that.

scope103

I doubt bypassing the CSI Timer will do you any good. You might want to pull the CSI and determine if it is spraying at all; dirt in an injector is never a good thing.

I assume that you have the timing set correctly, plugs correctly gapped, clean air filter, etc. (all the easy stuff)

BillysBuggy

I have new plugs and didnt gap them I need to double check the timing I set it but I need need to set it again, it is wasnt running the best when I set it.