Tom/Jono,
Today was a fabulous day and was able to fix my issues with the DC. I want to thank you both for helping me through this with your spot on information. I had to regroup since my last post and try to figure out just what the heck I was doing wrong. Basically, I had to step back and re-read all the previous information I had along with Tom and Jono's responses to my thread. Tom’s last post really set me straight (see below).
Engine Off and Key On you are at 70% or 85%, Correct?
Anything else is an error.
Answer: 85%
Then you push the airflow plate and you see ~10%, when you release it you may see 40%. (if you move the plate around you may see 70% again).
Answer: 9.9%
With Engine Off and Key On still you back to 70% or 85% and you floor the throttle from the cabin you get 20%? Release and return to 70% or 85%?
Answer: No change from 70%
Well at least know I know what my problem is. Basically my EHA is not getting a signal to enrich the fuel mixture. So I propped my gas peddle down with a tool case and was able to get it to stay all the way down with the kick down switch engaged. Now I went back to the engine compartment to see if the full throttle stop was engaged and verified that it was not. I remembered that Jono replied to my throttle linkage question and said to inspect the secondary linkage to see if there was too much play in the linkage directly behind the FD. If so, pop it off and hit it light so that it does not move any more. This looks basically like some kind of spring cylinder device that has lost its ability to recoil back. Because of this I was not able to get full throttle. I could manually push the linkage the balance of the way and engage the full throttle stop. Just as Jono stated, I popped the linkage off, hit it with a hammer to swage/compress it so that it no longer has play (see photo). I popped the linkage back on, removed the items used to engage the throttle in the full throttle position and voila 20% DC when the throttle is fully engaged from inside the drivers compartment.
Now that my full throttle issue is back on track, my next issue it that it is still running lean DC of 60% at 2500 RPM. Per Tom’s advice, now I am focusing on adjusting the EHA to run richer. So now I put towels around the FD to soak up fuel that will spray out when I loosen the two screws that secure the EHA to the FD. I removed the connector and loosened the screws and as expected, fuel sprayed out. I then removed the EHA being sure not to loose the green orings or the two EHA mounting screw. The EHA has a brass slotted screw that must be removed to get to the 2mm allen head adjustment screw (see photos two and three). I adjusted the EHA ¼ turn to clockwise to make is richer. After that I reassembled everything in the reverse order.
Now I measured the DC at idle and it was extremely rich at around 16%-22%. I then leaned it out to get 50% DC at idle. Now the moment of truth, I raised the RPM’s to 2500 and now get a DC of 32%-39%.
Now for the test drive. This is a completely different car that has finally come to life. At full throttle it continues to pull past 5K rpm with neck wrenching power. My previous dyno runs and trouble shooting revealed that I never had full throttle capability and was running lean at higher rpms. I can’t wait to get back to the dyno now. My previous dyno yielded 204 RWHP running lean and no full throttle. Hopefully I can get near the 227 RWHP mark that Jono stated he got with a similar set up.
Thank you both!!!!!
