carrollcw
Well Known Member
So, did my first engine run today. I have 2 manifold pressure sensors, one for the g3x and one for the EFII. Both would indicate ambient pressure before and after engine start. So, I disconnected the 2 vacuum lines from the throttle body, applied vacuum to each side of the system, and the sensors indicated normally (would drop manifold pressure when vacuum applied). They also did not leak when tested with a vacuum pump.
Thus it would appear I have a massive vacuum leak somewhere in the throttle body/engine. Any ideas before I take off the throttle body of additional trouble shooting tests? By the way, with the EFII, I could get the engine to run smoothly, but only when I went maximum lean. I am guessing this is because the EFII is thinking there is high manifold pressure (ambient air).
Thanks
Thus it would appear I have a massive vacuum leak somewhere in the throttle body/engine. Any ideas before I take off the throttle body of additional trouble shooting tests? By the way, with the EFII, I could get the engine to run smoothly, but only when I went maximum lean. I am guessing this is because the EFII is thinking there is high manifold pressure (ambient air).
Thanks