Help---Mystery problem !!
#2698844
09/19/19 12:57 AM
09/19/19 12:57 AM
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Joined: Jul 2004
Posts: 4,384 Worst Weather USA
493_DART
OP
master
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OP
master
Joined: Jul 2004
Posts: 4,384
Worst Weather USA
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Long story here...........I hope someone can throw me some ideas ?
Right now -----My dart----fresh motor . I have no spark from the coil . Months ago i fired up the car with this motor , and the timing was WAY off . It sounded crisp but wouldnt idle. This is just firing it up --so I had a buddy help fire it back up and the timing light said 60 deg btc ! So i backed it down to 30 and it wouldnt even start at normal timing...just sputter. Seemed normal when the timing light said 60btc....?
I recently looked at everything--looked at cam lobes , rockers , lash , cleaned the carb , timing chain+ gears .....Full on Leak down test----.even tried a new UNILITE that burned up in a couple minutes....a new coil , and a new MP ecu .
Now... Lets back up .......before i fired up the fresh motor last winter , i had a mishap. My buddy handed me the battery to put in the trunk , and i didnt have the light in the trunk.........i said ---Are you sure the Positive is to the rear? he said Yes................nope..... my dumass hooked it up.....backwards... we turned car on and had nice smoke by the engine....it burned a fusible link. Im still kicking myself for that.
SO----my buddy bought me a new chrome MP ecu.....I had the battery tested at Oreilly--tests perfect.. Nothing else looks hurt / burnt .
so tonight..i went and tried again--no spark and the ECU transistor gets REAL hot !! I had another ecu i plugged in---same thing--transistor gets super hot . I have 11.8v at both sides of the ballast...and both sides of the coil with ign ON . This is a MP distributor .
Nothing as far as wiring has changed on the car during this fiasco....
Im lost here............do i have 2 bad ECU boxes ? ive swapped coils..........the car ran weirdly with the new Unilite too...like the ignition is wayy screwed up . But it did RUN...........now..no spark ..
Yes i would love to scrap it all and put a switch panel in and a Msd setup---but no $$$$ to do that. Id like to find whats wrong with this setup because its worked great since 2008 !!
Last edited by 493_DART; 09/19/19 12:59 AM.
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Re: Help---Mystery problem !!
[Re: 493_DART]
#2698943
09/19/19 11:32 AM
09/19/19 11:32 AM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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I would set the damperner at 15 BTDC on #1 compression (or your known/preferred initial #) then set the dist so the magnet is dead even with the tooth & the #1 plug wire is above or near above the rotor. But first pull the yellow (ign) wire off of the starter relay to disable the starter & pull the #1 plug wire out of the dist cap & hold it 1/4 from a ground & seperate the dist zigzag pickup connector & drag the male terminal on the body half of the connector across the intake surface to make/break ground & see if the coil wire sparks to ground with the key "on" & with a helper holding it to "crank". this takes the dist out of the picture. Holler back EDIT what Squirrel said, confirm you have the right stuff in there
Last edited by RapidRobert; 09/19/19 11:34 AM.
live every 24 hour block of time like it's your last day on earth
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Re: Help---Mystery problem !!
[Re: RapidRobert]
#2698954
09/19/19 12:00 PM
09/19/19 12:00 PM
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Joined: Feb 2005
Posts: 20,159 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,159
PA.
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Screw a top dead center stop in cylinder number one and carefully check top dead center to make sure your damper didn't spin to double-check your timing issue. Lots of out of Country dampers are spinning.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: Help---Mystery problem !!
[Re: pittsburghracer]
#2698955
09/19/19 12:07 PM
09/19/19 12:07 PM
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Joined: Jan 2003
Posts: 9,985 Frostbitefalls MN (Rocky&Bullw...
gregsdart
master
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master
Joined: Jan 2003
Posts: 9,985
Frostbitefalls MN (Rocky&Bullw...
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Screw a top dead center stop in cylinder number one and carefully check top dead center to make sure your damper didn't spin to double-check your timing issue. Lots of out of Country dampers are spinning. Yep .
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Help---Mystery problem !!
[Re: pittsburghracer]
#2698993
09/19/19 02:45 PM
09/19/19 02:45 PM
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Joined: Jul 2004
Posts: 4,384 Worst Weather USA
493_DART
OP
master
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OP
master
Joined: Jul 2004
Posts: 4,384
Worst Weather USA
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Screw a top dead center stop in cylinder number one and carefully check top dead center to make sure your damper didn't spin to double-check your timing issue. Lots of out of Country dampers are spinning. the damper isnt going to make my coil Not spark...im thinking its the coil and/ or the ecu............I can double check the dist pickup but i think i did and it was giving a pulse ...........again ive swapped both BUT , i dont know if the replacements were any good to begin with ! yes i had the Unilite wired correct I think the clue here is nothing changed with wiring....it ran great until the battery incident .....i have no spark out of the coil , and the ecu Transistor is getting super hot . I have a Kill/ Run switch--its working ..and i have a starter button...its working . 11.8vdc to coil pos/ neg and same at ballast terminals if my timing is off....im sure would still have spark out of the coil ...weather its 40 deg btc or 0 btdc
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Re: Help---Mystery problem !!
[Re: 493_DART]
#2698998
09/19/19 03:18 PM
09/19/19 03:18 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
master
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master
Joined: Sep 2014
Posts: 4,457
Washington
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Screw a top dead center stop in cylinder number one and carefully check top dead center to make sure your damper didn't spin to double-check your timing issue. Lots of out of Country dampers are spinning. the damper isnt going to make my coil Not spark...im thinking its the coil and/ or the ecu............I can double check the dist pickup but i think i did and it was giving a pulse ...........again ive swapped both BUT , i dont know if the replacements were any good to begin with ! yes i had the Unilite wired correct I think the clue here is nothing changed with wiring....it ran great until the battery incident .....i have no spark out of the coil , and the ecu Transistor is getting super hot . I have a Kill/ Run switch--its working ..and i have a starter button...its working . 11.8vdc to coil pos/ neg and same at ballast terminals if my timing is off....im sure would still have spark out of the coil ...weather its 40 deg btc or 0 btdc If you killed the Unilite, that's a sign there's an issue somewhere.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: Help---Mystery problem !!
[Re: madscientist]
#2699003
09/19/19 03:35 PM
09/19/19 03:35 PM
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Joined: Jan 2003
Posts: 7,477 Minnesota
Hemi_Joel
master
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master
Joined: Jan 2003
Posts: 7,477
Minnesota
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Verify that the distributor is turning when the engine cranks. The distributor gear pin could be sheared. It can still turn some on friction.
Last edited by Hemi_Joel; 09/19/19 03:39 PM.
[img]http://i.imgur.com/boeexFms.jpg[/img]31 Plymouth Coupe, 392 Hemi, T56 magnum RS23J71 RS27J77 RP23J71 RO23J71 WM21J8A I don't regret the things I've done. I only regret the things I didn't do. "Wise men talk because they have something to say; fools because they have to say something. ~ Plato"
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Re: Help---Mystery problem !!
[Re: firefighter3931]
#2699649
09/21/19 09:52 PM
09/21/19 09:52 PM
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Joined: May 2009
Posts: 62 montreal, quebec,canada
7e5dartsport
member
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member
Joined: May 2009
Posts: 62
montreal, quebec,canada
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if you have a 4pin ballast resistor, test its resistance. one side should be 5 ohms, the other 0.5 ohms. if you have a 2pin resistor, it should be from 0.25 to 0.5 ohms. all these tests with the connectors at the resistor disconnected for testing.
fully legal sounds the same as full illegal...
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Re: Help---Mystery problem !!
[Re: 493_DART]
#2707833
10/17/19 08:21 PM
10/17/19 08:21 PM
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Joined: Jul 2004
Posts: 4,384 Worst Weather USA
493_DART
OP
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OP
master
Joined: Jul 2004
Posts: 4,384
Worst Weather USA
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Update---- still have 12v everywhere it should swapped in a new ECU ..........no spark ....grounded ecu case to battery neg direct ........no spark brand new coil ........no spark , checked and swapped coil output cable . pulled dist out to check pickup ---works fine . swapped ballasts--both test good I give up going with new ignition..maybe a ready to run setup .
Last edited by 493_DART; 10/17/19 08:22 PM.
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Re: Help---Mystery problem !!
[Re: Hemi_Joel]
#2707834
10/17/19 08:25 PM
10/17/19 08:25 PM
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Joined: Jul 2004
Posts: 4,384 Worst Weather USA
493_DART
OP
master
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OP
master
Joined: Jul 2004
Posts: 4,384
Worst Weather USA
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Verify that the distributor is turning when the engine cranks. The distributor gear pin could be sheared. It can still turn some on friction. verified .
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Re: Help---Mystery problem !!
[Re: firefighter3931]
#2707835
10/17/19 08:26 PM
10/17/19 08:26 PM
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Joined: Jul 2004
Posts: 4,384 Worst Weather USA
493_DART
OP
master
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OP
master
Joined: Jul 2004
Posts: 4,384
Worst Weather USA
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Try reversing the pickup wires. I had a similar problem in the past nd the car wouldn't even fire until I reversed the pickup wires.
Ron the plug and dist. wiring havent changed at all since it ran .
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Re: Help---Mystery problem !!
[Re: 493_DART]
#2707843
10/17/19 08:52 PM
10/17/19 08:52 PM
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Joined: Aug 2003
Posts: 43,124 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,124
Bend,OR USA
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Try reversing the pickup wires. I had a similar problem in the past nd the car wouldn't even fire until I reversed the pickup wires.
Ron the plug and dist. wiring havent changed at all since it ran . Something has changed or it would still run, correct I would be checking the grounds with a ohm meter between the ECU, coil resistor and the distributor housing and block
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Help---Mystery problem !!
[Re: Cab_Burge]
#2707873
10/17/19 09:59 PM
10/17/19 09:59 PM
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Joined: Dec 2006
Posts: 2,105 Byron, NY
W.I.N. Racing
top fuel
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top fuel
Joined: Dec 2006
Posts: 2,105
Byron, NY
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Just a shot in the dark...about 100yrs ago I had a 67 Barracuda w/440... anyway one nite I went to a friends house and when I tried to leave no start /spark... every thing looked good just no spark. then I found one of the wires from the MSD-6C had gotten trapped under the Valve cover. Once I found and resolved the issue (plus learned another lesson about MSD's) it started right up...just a thought
'01 P1500, Blown/Inj BAE,/Veney ,Bruno/CS2,Dana 60 '01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust, '05 Dodge Magnum R/T - Too Much to list '60 Willys CJ5 '01 International LPX - Project,DT466, Allison '64 Plymouth Valiant, Inj 528 Hemi, 2spd
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Re: Help---Mystery problem !!
[Re: Cab_Burge]
#2708108
10/18/19 02:25 PM
10/18/19 02:25 PM
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Joined: Jul 2004
Posts: 4,384 Worst Weather USA
493_DART
OP
master
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OP
master
Joined: Jul 2004
Posts: 4,384
Worst Weather USA
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Try reversing the pickup wires. I had a similar problem in the past nd the car wouldn't even fire until I reversed the pickup wires.
Ron the plug and dist. wiring havent changed at all since it ran . Something has changed or it would still run, correct I would be checking the grounds with a ohm meter between the ECU, coil resistor and the distributor housing and block ill go over grounds with the meter 1 more time...i know the block was good--and i had a direct ground from Batt to Ecu... ill check wiring again but i had 12v everywhere it should be-----
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