That was also my initial thought, but it checked out when we had looked into it previously. It's also in intermittent problem that went away when Dave was moving around the wiring harness, so we're still inclined to believe it's something pertaining to either the loose male connector on the coil and/or the crappy old brittle wiring in the harness at the connector to the coil and at the SPOUT connector. Our plan is to replace the coil (the reason this thread originated), along with the coil connector and SPOUT connector portions of the harness with available OEM replacement connectors and pigtails.
Fuel pressure is in the 40-44 psi range.
Yes, probably a good time for a review.
I've been researching this heavily over the past few days. Condensing everything down... ...and with zero ability to control timing from a fancy distributor and with our engines at the level of performance they operate... ...it seems the only "performance" benefit to be had from a hotter coil (higher voltage output) is possibly a smoother idle. Basically, it seems if you don't have super high compression, or power adder, or super high RPMs, there is actually no "performance" advantage to be seen. The only potential advantage may be with better longevity and durability if the manufacturer uses higher quality components. And from what folks have already posted, that may also be questionable. If the quality is the same, the benefit may then only be a cheaper price than the OEM brand, as the OEM brand (Motorcraft/Autolite in our specific case) seems to now have a higher price tag attached to it, even though it may only be a rebranded part from a specific no-name manufacturer.
And now I'm even seeing other threads that claim the aluminum terminals on caps may actually have a performance advantage because the conduct electricity better than brass. If that's the case, the only benefit to brass is possibility they wear better/oxidize differently than aluminum.
What about the salt/pepper shaker plugs that merge the main computer wiring with the EFI harness? Maybe time to cut them out and solder all that back together?
How do your grounds look? Do you still have the ground strap on the back of the driver's side cylinder head?
Marshall Mosty
AI/SI Texas Regional Director
2011 NASA-TX American Iron Champ
AI #67 "Mosty Brothers' Racing" (RIP)
ST6 #21 Toyota Corolla (being revived)...
We've got the CMC title for 2017 so we dont need to show up and run. If we do show up its only to make sure our electrical fixes are good on track and no other issues arise. I'm not risking any physical contact with any other cars (cough) since the day after HPR we start heading to California for Nationals.
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