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1977 bronco when i turn key to run position the distributor starts to click

 
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jim mitchell
Bfix "What's a Bronco?"
Bfix


Joined: 24 Apr 2015
Posts: 2

PostPosted: Fri Apr 24, 2015 4:40 pm    Post subject: 1977 bronco when i turn key to run position the distributor starts to click Reply with quote

i can remove the coil wire going to the distributor an the wire will arch .Cranks and runs but when you get up to 2500rpm the engine starts to shutter.Can unplug the breakless ignition modulator and the distr does not click when i turn the key to run position . thinking it might be a bad modulator thanks for any help is their any way to check the modulator.
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DirtDonk
BFix Locked and Loaded
BFix Locked and Loaded


Joined: 27 Jul 2003
Posts: 2738
Location: San Jose, CA

PostPosted: Wed May 27, 2015 8:29 pm    Post subject: Reply with quote

Hey Jim, welcome. Did you get this figured out yet?

Hard to test modules, but I'm pretty sure it's possible. An arc between the distributor and coil doesn't sound right though, for an engine that's not running.
I'll see if I can find any reference guides on troubleshooting an Duraspark setup, but let us know if you figured it out.

Thanks.

Paul

_________________
'71 Bronco - 302 4v
3.5" WH/Skyjacker Lift
33 x 11.50 x15 Thornbirds on 15x7 Enkei's
Kayline soft top
Hanson bumpers
Dual batteries, Large 1G alt.

WWW.WILDHORSES4X4.COM Mr. Green
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jim mitchell
Bfix "What's a Bronco?"
Bfix


Joined: 24 Apr 2015
Posts: 2

PostPosted: Thu May 28, 2015 4:48 am    Post subject: clicking in dist Reply with quote

yea thanks for your reply the problem was the modulator
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DirtDonk
BFix Locked and Loaded
BFix Locked and Loaded


Joined: 27 Jul 2003
Posts: 2738
Location: San Jose, CA

PostPosted: Fri May 29, 2015 10:31 am    Post subject: Reply with quote

Cool. Love the simple fixes.
That's why we used to always carry a spare with is if we off-roaded. Not a huge concern around town, but you didn't want to get caught without one in the outback.
Not that they're unreliable. There are some originals still working out there. But anything that will ruin your day if it fails is good to have handy. And since electronic is definitely better than points, you just gotta stick with it.

Also plenty of threads here and elsewhere on the internet showing how to utilize other brands (like GM HEI modules) in place of the Ford, simply to have a smaller spare that more easily fits in the glovebox.
In case you're leaning in that direction.

Have fun with your Bronco.

Paul

_________________
'71 Bronco - 302 4v
3.5" WH/Skyjacker Lift
33 x 11.50 x15 Thornbirds on 15x7 Enkei's
Kayline soft top
Hanson bumpers
Dual batteries, Large 1G alt.

WWW.WILDHORSES4X4.COM Mr. Green
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