Home » Public Forums » GMCnet » EFI and Electronic Ignition Initial Start Up Questions
| Re: EFI and Electronic Ignition Initial Start Up Questions [message #367954 is a reply to message #367887] |
Sat, 11 December 2021 14:17   |
Tom Katzenberger
Messages: 399
Registered: June 2019
Location: Kingsville, MD
Karma: 4
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Jim K,
Thanks Jim.
Injectors now firing and engine runs great!
Thank you and everyone for all the help. I very much look forward to putting faces to all the name of those that I am very grateful for.
I wish everyone a very healthy and Merry Christmas.
Take care,
Tom K.
Tom & Oki Katzenberger,
Kingsville, Maryland,
1977 23' Birchaven, 455 C.I.D., Micro Level, Howell EBL-EFI Spark Control, Macerator, York Air Compressor, 6 Wheel Disc, Quadra Bag, Onan W/Bovee Ignition
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| Re: EFI and Electronic Ignition Initial Start Up Questions [message #367958 is a reply to message #367956] |
Sat, 11 December 2021 18:43 |
Bill Van Vlack
Messages: 419
Registered: September 2015
Location: Guemes Island, Washington
Karma: 14
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Yes... Quote:What was wrong and what fixed it ?
Quote:Tom says: "I did add a new to me spark control dist. I have the original connector attached and one wire to the tach location. It may be my after market Tach, which means I have no connection to the EBL. I will have to review to see if there is any wiring concerns at that location?"
Some more questions... What is a 'spark control distributor'? HEI? HEI with 8-pin module, pigtail, and 4-pin weatherpac connector that connects the new harness and back to the ECM? What is the 'original connector? One of the connectors for power, ground and tach connectors at the coil or the 4-pin harness connector?
Bill Van Vlack
'76 Royale; Guemes Island, Washington; Twin bed, full (DS) side bath, Brazilian Redwood counter and settee tops,455, 6KW generator; new owner a/o mid November 2015.
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| [GMCnet] Re: EFI and Electronic Ignition Initial Start Up Questions [message #367959 is a reply to message #367956] |
Sat, 11 December 2021 18:35 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Loose nut behind the wheel? (Grin)
Jim Hupy ( Been there, Done that, Got the T-Shirt)
Salem, Oregon
On Sat, Dec 11, 2021, 3:38 PM Dave King wrote:
> Tom, so I've read the WHOLE thread. What was wrong and what fixed it ?
> Inquiring
> minds need/want to know. LOL
> Thanks
> --
> DAVE KING
> lurker, wannabe
> Toronto, Ontario, Canada
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| Re: EFI and Electronic Ignition Initial Start Up Questions [message #367960 is a reply to message #367887] |
Sat, 11 December 2021 19:51 |
Tom Katzenberger
Messages: 399
Registered: June 2019
Location: Kingsville, MD
Karma: 4
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Senior Member |
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Dave and Jim,
I purchased a new cap, coil, rotor and module first thing in the morning. I switched the cap out of my old Birchaven just to give it a try and it worked beautifully. Plenty of spark, but no fuel at that time.
After reading more on the web, I later came back and tapped the injectors with a hard plastic screw driver handle, Unplugged the injector connector and plugged them back in and continued to crank. After about 3 seconds more with good spark the injectors clearly and visibly started to spray and the engine started and ran very well. I let it sit for several minutes, several times and restarted the engine. It started each time immediately.
In conclusion, I believe Troy at Howell who within less then 5 min, had a good diagnosis and the coil in the old cap was bad. The coach which I am rebuilding had 8,000 original miles and was in an auto collection for 30 years, but the previous owner also had another unit which he used much more often as a tailgate vehicle to go to college football games. I assumed because the cap came from a unit with only 8,000 miles it most likely was in better shape then the cap in my original unit (I was Wrong). Perhaps the 8,000 mile coach had its cap cannibalized at some point in its life.
It was mostly a matter of switching the old cap and coil, un plugging and plugging connectors back in. I would say the major issue was the coil and perhaps needed more cranking or pump time. The new EBL, Distributor and EFI Kit worked well. I am happy and very much enjoyed the journey.
I hope this helps.
Take care,
Tom K.
Tom & Oki Katzenberger,
Kingsville, Maryland,
1977 23' Birchaven, 455 C.I.D., Micro Level, Howell EBL-EFI Spark Control, Macerator, York Air Compressor, 6 Wheel Disc, Quadra Bag, Onan W/Bovee Ignition
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| Re: EFI and Electronic Ignition Initial Start Up Questions [message #367961 is a reply to message #367887] |
Sat, 11 December 2021 19:54 |
Tom Katzenberger
Messages: 399
Registered: June 2019
Location: Kingsville, MD
Karma: 4
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Senior Member |
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P.S. The help and support I got from you guys was priceless and I very much appreciate it. Please accept my gratitude and deeply felt thank you.
Tom & Oki Katzenberger,
Kingsville, Maryland,
1977 23' Birchaven, 455 C.I.D., Micro Level, Howell EBL-EFI Spark Control, Macerator, York Air Compressor, 6 Wheel Disc, Quadra Bag, Onan W/Bovee Ignition
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| [GMCnet] Re: EFI and Electronic Ignition Initial Start Up Questions [message #367962 is a reply to message #367961] |
Sat, 11 December 2021 19:58 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Great news! Hang in and be systematic in your approach to troubleshooting.
If you get frustrated, do something else for a bit until you have a clear
head. Success always feels great.
Jim Hupy
Salem, Oregon
On Sat, Dec 11, 2021, 5:54 PM wrote:
> P.S. The help and support I got from you guys was priceless and I very
> much appreciate it. Please accept my gratitude and deeply felt thank you.
> --
> Tom & Oki Katzenberger,
> Kingsville, Maryland,
> 1977 23' Birchaven, 455 C.I.D.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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| Re: EFI and Electronic Ignition Initial Start Up Questions [message #367964 is a reply to message #367887] |
Sat, 11 December 2021 22:13 |
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RF_Burns
Messages: 2277
Registered: June 2008
Location: S. Ontario, Canada
Karma: 3
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Senior Member |
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Tom,
I still don't know if you have a 4-wire spark controlled by ECM (ESC) distributor, or a standard vacuum advance distributor??
This matters because if the ECM doesn't see pulses from the distributor, it will not open the injectors. The ESC distributor operates by itself at very low (cranking) RPMs. The EBL ECM takes over spark control above 400RPM.
The 30PSI reading is concerning because the fuel pressure regulator is right after the injectors. It is a bypass type regulator that dump excess fuel to the return line to regulate the fuel pressure at 12-13PSI. This farmboy mechanic thinks the fuel pressure should be close to the same at the inlet side of the throttle body... at least it is on mine. 30PSI could lock the injectors closed and the electrical coils not have enough power to pull them open at that pressure.
It would help if you loaded the Whats up display (WUD) on your computer for troubleshooting this problem. From it we could tell if you are running the proper BIN program for the 455 and if the BIN is even selected (there are 8 available).
Another issue could be the Throttle Position Sensor (TPS) if the ECM is reading the TPS at more than 80% wide open throttle while cranking, it will think you are trying to clear a flooded condition and cut fuel injection. This could be caused by a misaligned TPS sensor, a faulty TPS, or miss-wiring of the TPS. The WUD would tell us this.
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
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| Re: EFI and Electronic Ignition Initial Start Up Questions [message #367969 is a reply to message #367887] |
Sun, 12 December 2021 12:27 |
Tom Katzenberger
Messages: 399
Registered: June 2019
Location: Kingsville, MD
Karma: 4
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Senior Member |
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Bill,
Thanks and I will be installing the WUD. I have a lot to learn, but it is very enjoyable.
Take care,
Tom K.
Tom & Oki Katzenberger,
Kingsville, Maryland,
1977 23' Birchaven, 455 C.I.D., Micro Level, Howell EBL-EFI Spark Control, Macerator, York Air Compressor, 6 Wheel Disc, Quadra Bag, Onan W/Bovee Ignition
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| Re: EFI and Electronic Ignition Initial Start Up Questions [message #367980 is a reply to message #367887] |
Sun, 12 December 2021 17:28 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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I didn't swap tanks driving my new to me 26', and the gauge was untrustworty in the positive direction. It quit, wouldn't start, so I called Miguel. He told me swap tanks, take the air horn off, and look down the FI throat while tuning the ignition on and back off till I see a squirt of fuel. Took about ten cycles, and a bit of gas shot out. Turned it to start and it fired up instantly. Fortunately, an exit half a mile ahead It was the exit where the Gen Patton museum is located, bought 40+ gallons of gas, did the museum, and hustled on down I 10 to the east, with an eagle eye on the odometer.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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