msd 6al ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

fast71 · 11-01-2003, 07:27 PM

Me and a friend are building a s10 with a small block well we were going to fire the motor a little while ago but we're not getting fire . we ran the test that is in the directions of the 6al box and got no results which by them means the box is bad . I pulled the dist. out and turned it by hand . I can hear the boxed making a clicking noise but no signal at the neg. side of the coil.
with the ing. switch on I have power at the pos.side of the coil and a constant ground at the neg side of the coil ,even when spinning the dist. . I thought the neg side was a pulse side . Does anyone have any Ideas?
Thanks
Brian

stelth2002 · 11-01-2003, 07:43 PM

I have one on my truck and from the sounds of it, its bad. I plugged mine in and it worked excellent. I could weld with it if i wanted.

Chevy67Tk · 11-02-2003, 01:49 AM

The MSD 6 series pulses very fast, if you were using a digital volt meter they will not respond fast enough to detect the drop of the ground and I doubt you will even see it on an analog meter because it is trying to fire multiple sparks. You might want to check the coil by checking the resistance across your coil, and double check you’re wiring. Before you go sending it back

fast71 · 11-02-2003, 10:55 AM

We have gone through the wiring till I'm blue in the face. we're going to try another box today . I'm almost positive that it is the problem . My buddy went to a msd trouble shooting site last night and found the same problem we're having and it said replase box so I ordered another one from Advance auto parts and going to try it . I will update later today.

*rage'nrat638* · 11-02-2003, 11:09 AM

pull the cap and turn the engine over,, may sound stupid but make sure the rotor is turning

fast71 · 11-02-2003, 11:15 AM

we did that and we took the dist out and turned it by hand and still no spark .

bigjimzlll · 11-02-2003, 12:10 PM

Run the ground wire back to the battery

my new 72 · 11-02-2003, 12:10 PM

Mine kinda hums. I put it inside the cab under the A/C box and the firewall and I may put it back in the engine compartment. No stereo in the truck right now, so I hear it the whole time I drive. Maybe I'll just get some speakers and install the stereo.

fast71 · 11-02-2003, 02:50 PM

installed new box fired right up no problems . I guess we got a bad one right of the box

11-01-2003, 07:27 PM	#1
fast71 Drive it like U stole it Join Date: Mar 2000 Location: tunnel hill ,GA /Chatt,TN Posts: 956	msd 6al ? Me and a friend are building a s10 with a small block well we were going to fire the motor a little while ago but we're not getting fire . we ran the test that is in the directions of the 6al box and got no results which by them means the box is bad . I pulled the dist. out and turned it by hand . I can hear the boxed making a clicking noise but no signal at the neg. side of the coil. with the ing. switch on I have power at the pos.side of the coil and a constant ground at the neg side of the coil ,even when spinning the dist. . I thought the neg side was a pulse side . Does anyone have any Ideas? Thanks Brian __________________ 71 custom 10 swb 72 nova ss 72 nova custom 87 s10 96 burb 94 camry 53 5 window 3100

11-01-2003, 07:43 PM	#2
stelth2002 Young Gun wth Fast Inline Join Date: Jan 2002 Location: Idaho Posts: 1,475	I have one on my truck and from the sounds of it, its bad. I plugged mine in and it worked excellent. I could weld with it if i wanted. __________________ 1967 Chevrolet LWB with built 292! 415 ft. lbs of torque, 4 speed :O with 27% overdrive too, 3.73 Posi. Frame and body done... getting painted!!!

11-02-2003, 01:49 AM	#3
Chevy67Tk Registered User Join Date: Mar 2003 Location: PA Posts: 349	The MSD 6 series pulses very fast, if you were using a digital volt meter they will not respond fast enough to detect the drop of the ground and I doubt you will even see it on an analog meter because it is trying to fire multiple sparks. You might want to check the coil by checking the resistance across your coil, and double check you’re wiring. Before you go sending it back __________________

11-02-2003, 10:55 AM	#4
fast71 Drive it like U stole it Join Date: Mar 2000 Location: tunnel hill ,GA /Chatt,TN Posts: 956	We have gone through the wiring till I'm blue in the face. we're going to try another box today . I'm almost positive that it is the problem . My buddy went to a msd trouble shooting site last night and found the same problem we're having and it said replase box so I ordered another one from Advance auto parts and going to try it . I will update later today. __________________ 71 custom 10 swb 72 nova ss 72 nova custom 87 s10 96 burb 94 camry 53 5 window 3100

11-02-2003, 11:15 AM	#6
fast71 Drive it like U stole it Join Date: Mar 2000 Location: tunnel hill ,GA /Chatt,TN Posts: 956	we did that and we took the dist out and turned it by hand and still no spark . __________________ 71 custom 10 swb 72 nova ss 72 nova custom 87 s10 96 burb 94 camry 53 5 window 3100

11-02-2003, 11:09 AM	#5
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	pull the cap and turn the engine over,, may sound stupid but make sure the rotor is turning

11-02-2003, 12:10 PM	#7
bigjimzlll Senior Member Join Date: Dec 2001 Location: Redding,CA...USA Posts: 4,736	Run the ground wire back to the battery __________________ It's called "drag racing" if they called it "tic..tic..WHAM!..BANG! F*&K!!!", they'd have to keep the magazines under the counter with the other men's publications click the clicky to join the site.... http://67-72chevytrucks.com/vboard/payments.php 67 lwb..first hotrod in 25 years..540 best ET is 9.45 @ 141.44 Anderson,CA

11-02-2003, 12:10 PM	#8
my new 72 faster, faster, faster Join Date: Dec 2001 Location: Houston ,Texas ,USA Posts: 1,354	Mine kinda hums. I put it inside the cab under the A/C box and the firewall and I may put it back in the engine compartment. No stereo in the truck right now, so I hear it the whole time I drive. Maybe I'll just get some speakers and install the stereo. __________________ I'm going to Law School, wanna debate? It's good practice.

11-02-2003, 02:50 PM	#9
fast71 Drive it like U stole it Join Date: Mar 2000 Location: tunnel hill ,GA /Chatt,TN Posts: 956	installed new box fired right up no problems . I guess we got a bad one right of the box __________________ 71 custom 10 swb 72 nova ss 72 nova custom 87 s10 96 burb 94 camry 53 5 window 3100

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