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#11
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Bill |
#12
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You've never lived until you've almost died -- for those who fight for it, life has a flavor the protected will never know! |
#13
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Is your wiring harness all original? If so the wire that supplies power to the coil is probably a resistence wire. Look at it closely you will notice it being different. You will need to remove that wire and replace it with normal wire to provide the correct voltage to the hei coil
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#14
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You've never lived until you've almost died -- for those who fight for it, life has a flavor the protected will never know! |
#15
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It is present.
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Dave 1987 Grand National |
#16
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The engine was running fine when I bought it (April 2016) and did so until this time last year (Oct. 2016). That is when this issue popped up. I have since put in new plugs, wires, ign coil, cap, rotor. Had the timing checked. Had Eric rebuild the Holley and recently had the EFI installed. So far, nothing has solved the issue.
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Dave 1987 Grand National |
#17
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I finally got around to checking the starting voltage. I pulled off the input voltage wire from the HEI and checked the voltage with key on. It is 11.8 v. In start mode it goes to 9.8 v. It is the same when the engine is up to operating temp. The next thing I am gonna check is the voltage when running but that involves removing the cap from the coil.
I also drove it about 10 miles and it also has a miss. Got to be something wrong with the ignition but I haven't figured it out yet.
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Dave 1987 Grand National |
#18
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Don't know if this has been mentioned yet. Do you have an electonic tach connected to the HEI? If so, you may want to unplug it also in case the tach is causing an issue ... TAZ
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You've never lived until you've almost died -- for those who fight for it, life has a flavor the protected will never know! |
#19
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When it is hot and it "won't start" is it cranking over at normal speed or hard cranking?
Had a similar issue with freshly powder coated engine mounts frame etc. Would fire cold but not hot (cranked very slow). Poor ground through the coating. I added a ground cable from the block to frame and all is well.
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68 Acadian SS-350 auto/AC driver 70 Nova SS-396/375HP Bench Stick 72 Nova SS-350 5sp Mini Tubbed 67 Chevelle Conv. SS-427 clone 70 Chevelle SS-454 LS-5 M-22 |
#20
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I'm not sure how to 'hot wire' it to the battery. Will it still start/stop using the keyed ignition switch if I run a wire to the + at battery and 12v side of the HEI? I still have the original tach in the car and the EFI has a control/monitoring module that has a multitude of 'gauges' including a tach. The wire in the HEI is part of the EFI harness.
When the engine is hot it will turn over just fine, it just takes time to fire. I usually open the throttle (1/2 - full pedal) to get it started.
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Dave 1987 Grand National |
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