Re: some help starting new engine
[Re: RapidRobert]
#971677
04/11/11 11:49 PM
04/11/11 11:49 PM
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Joined: Jan 2003
Posts: 20,492 Eagle, Idaho
Neil
The Doctor is in.
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The Doctor is in.
Joined: Jan 2003
Posts: 20,492
Eagle, Idaho
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Quote:
dist/timing
Sometimes it pays to have a helper gently rotate the distributor around a little while cranking a new engine over.
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Re: some help starting new engine
[Re: drumcat]
#971680
04/12/11 01:07 AM
04/12/11 01:07 AM
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Joined: Feb 2010
Posts: 18,493 Granite Bay CA
Kern Dog
Striving for excellence
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Striving for excellence
Joined: Feb 2010
Posts: 18,493
Granite Bay CA
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I dont want to piss on your wheaties here, but if you have been cranking on a motor long enough to wear down the battery, you may have wiped out the cam and lifters. All it takes is 3 or 4 revolutions of a motor to WIPE off the assembly lube and from there, the cam lobes are running metal to metal. To test for spark, you can pull the distributor out of the motor and pull a plug wire off a plug. Stick a spare plug in the loose wire and turn the ignition switch ON. Now spin the distributor shaft. If you see the plug arc, then you need to determine where TDC is and then stab the distributor. If you want a diagram, look at Hughes Engines website in the camshaft section. I hope for your sake that the cam is okay. Priming the system wont help either, since the cam and lifters are SPLASH lubricated by oil slung from the crankshaft. Keep us in the loop.
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Re: some help starting new engine
[Re: Kern Dog]
#971681
04/12/11 01:16 AM
04/12/11 01:16 AM
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Joined: Feb 2003
Posts: 10,200 Someplace you aren't
SomeCarGuy
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 10,200
Someplace you aren't
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Use the TDC mark to set the distributor where it will start until you get the light on it. You are just literally shooting for TDC as the timing or slightly BTDC.
Easiest way I know to hit the mark the first time is to have a reliable TDC mark, put the intermediate shaft in so that it is at 9 and 3 (straight across) and then put the distributor in. Just make sure that the rotor is pointing to the #1 terminal and it should hit first try if everythign else is in order.
Check and make sure you have a good ground. I've seen engine put back in cars and they crank slow when they have a ground left off or too small a wire. Easy thing to miss in the excitement of a first fire.
I want my fair share
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Re: some help starting new engine
[Re: drumcat]
#971686
04/12/11 06:41 PM
04/12/11 06:41 PM
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Joined: Jun 2005
Posts: 4,041 michigan woods
imfixinmopars426
master
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master
Joined: Jun 2005
Posts: 4,041
michigan woods
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ok...first,ground to engine from batt.smaller groung from back of engine to firewall,or body ground,not really need for x-member gnd. is there key power to resister on firewall? if so,is there power from neg coil,form resistor? resisters go bad. bring engine up on #1,front cyl,drivers side,and match the plug wire tower on cap to rotor.like above might have to pull dist,and realighn the drive gear/oil pump shaft,to get proper plug wire location. if all is ok? *got spark? is it electroic,or points? *a slow starter on a new engine is a pain! if the timing is off,or 180deg out,the engine might turn over hard,or stupid when starting. let us know how it going,good luck,mike
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Re: some help starting new engine
[Re: drumcat]
#971690
04/12/11 08:17 PM
04/12/11 08:17 PM
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Joined: Feb 2003
Posts: 10,200 Someplace you aren't
SomeCarGuy
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 10,200
Someplace you aren't
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Make sure the orange box has a good ground. The slot in the drive can be ALMOST parrallel and it is on the wrong stroke. Off just slight bit. Kind of hard to describe but once you see it positioned the wrong way and then the correct way you won't forget. Then
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Re: some help starting new engine
[Re: drumcat]
#971691
04/12/11 08:24 PM
04/12/11 08:24 PM
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Joined: Jun 2005
Posts: 4,041 michigan woods
imfixinmopars426
master
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master
Joined: Jun 2005
Posts: 4,041
michigan woods
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sounds stupid,but are sure the rotor is turning while cranking? i had a dist gear/shaft fail once. sounds like maybe the wiring to the orange box/dist/car is an issue? do you have a FSM? or wiring diagram to ck all the ign wiring? some times i use a dist hooked to the system,but in my hand,and spin it,to see if the system is working.is any of the parts to be known to be good,from before? ck pickup in dist,vs reluctor for clearance.should be .010 or less w/o hitting. look into the tech archives for wiring,and electronic info,here is the wiring dia from there click on the link. http://www.moparts.org/Tech/Archive/elec/3.html
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Re: some help starting new engine
[Re: drumcat]
#971693
04/12/11 09:22 PM
04/12/11 09:22 PM
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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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Quote:
problem now is i do not have spark from the coil wire....power to +side is there although seemingly weak...a way to test coil?
Hold coil secondary wire (dist end) 1/4" from a ground and jump 12V from batt positive post over to the coil (+) pri terminal and w another jumper wire w alligator clips on each end connect one end to the coil (-) pri terminal and touch the other end to ground making and breaking it repeatedly like Morse Code & see if this makes the coil secondary wire spark. A coil can test OK cold like this then act up w hot but this'll see if you have continuity as is. EDIT Then need switched 12V to coil positive thru the ballast in run (ign1) and 12V to it bypassing the ballast in start (ign2) and the ECU needs to make/break the coil pri negative terminal like you did by hand and the dist pickup triggers the ECU to do this.
Last edited by RapidRobert; 04/12/11 09:40 PM.
live every 24 hour block of time like it's your last day on earth
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