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Old 09-05-2013, 11:22 PM   #26
Tx79chevy
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Re: 75 won't start

Thanks I will try that tomorrow.
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Old 09-06-2013, 01:34 AM   #27
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Re: 75 won't start

Cracked distributor cap or the ignition module has gone bad.
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Old 09-06-2013, 08:55 AM   #28
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Re: 75 won't start

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Thanks I will try that tomorrow.
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While your at it take a pic of your motor and dizzy for us!
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Old 09-06-2013, 08:11 PM   #29
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Re: 75 won't start

I took it to a friends house that is a mechanic, so he is gonna look at it for me. Thanks for all the info and suggestions guys. I will post on here when he figured out what exactly the problem is.
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Old 09-06-2013, 08:46 PM   #30
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Re: 75 won't start

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Originally Posted by Tx79chevy View Post
I took it to a friends house that is a mechanic, so he is gonna look at it for me. Thanks for all the info and suggestions guys. I will post on here when he figured out what exactly the problem is.
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Good luck with it and I hope you get it straightened out pretty fast and that it isn't anything serious.
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Old 09-07-2013, 10:19 AM   #31
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Re: 75 won't start

Did you confirm the rotor was actually turning?
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Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive.
It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar.....

Cubic inches is like Indiana Jones with a cheap pistol.
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Old 09-07-2013, 05:39 PM   #32
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Re: 75 won't start

no i didnt
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Old 09-09-2013, 08:50 PM   #33
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Re: 75 won't start

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Put a new rotor in the distributor. Still nothing. I noticed a little piece of metal that fell out when I took the cap off. So maybe a new distributor cap is needed?
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show your friend that piece,could be the issue
under the entire distributer cap is the rotor which has a thin strip of metal,it comes up to contact the bottom of the actual plastic cap of the the dizzy
looking up inside you should see a little round metal bump(contact bushing)
if it's flat it's wearing out,can still work tho
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Old 09-19-2013, 09:03 PM   #34
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Re: 75 won't start

Update: Got my truck back today. The teeth on the gears for the timing chain had been sheared off. The original gears were still on there.
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Old 09-20-2013, 10:36 AM   #35
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Re: 75 won't start

That's not good news.

Did something stop turning?

What's your next step? shop for a crate motor or fix this one?

I know you must be bummed outs since this is a new truck to you.
Just hand in there and you'll get it sorted out.

Get a manual and post pics and questions here.
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Old 09-20-2013, 11:55 AM   #36
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Re: 75 won't start

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Originally Posted by swissarmychainsaw View Post
That's not good news.

Did something stop turning?

What's your next step? shop for a crate motor or fix this one?

I know you must be bummed outs since this is a new truck to you.
Just hand in there and you'll get it sorted out.

Get a manual and post pics and questions here.
Original late 70's thru 80's gears were poly/nylon so teeth sheering after years of use is not unusual. Pop a new steel gear & chain on & it's back in business.
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Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive.
It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar.....

Cubic inches is like Indiana Jones with a cheap pistol.
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Old 09-20-2013, 12:58 PM   #37
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Re: 75 won't start

Yeah it had the original nylon gears. He put new gears and chain on it and it runs great now.
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Old 09-20-2013, 01:09 PM   #38
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Re: 75 won't start

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Originally Posted by Tx79chevy View Post
Yeah it had the original nylon gears. He put new gears and chain on it and it runs great now.
This is why I asked if the rotor was actually turning. Broken timing gear or chain = cam not turning = distributor/rotor not turning.
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89CCDually-Driver/Tow Truck
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All Fleetsides
@rattlecankustoms in IG

Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive.
It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar.....

Cubic inches is like Indiana Jones with a cheap pistol.
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Old 09-20-2013, 03:31 PM   #39
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Re: 75 won't start

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Originally Posted by Tx79chevy View Post
Yeah it had the original nylon gears. He put new gears and chain on it and it runs great now.
Awesome dude! Congrats.

You need to post some pics!
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