Broke down. Help :(
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Junior User
Joined: Jan 2012
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Broke down. Help :(
Ok. Installed my new stereo in the glove box today.
Decided to drived around to listen to new sound. Running perfect Then BOOM
Died as i was driving and could not get it started again. I tried forever but nothing... Its turning.. and i can hear fuel in the carb.
Leads me to believe its a spark problem
Where should i start? its on the side of the road and will be tackling this in the morning.
Decided to drived around to listen to new sound. Running perfect Then BOOM
Died as i was driving and could not get it started again. I tried forever but nothing... Its turning.. and i can hear fuel in the carb.
Leads me to believe its a spark problem
Where should i start? its on the side of the road and will be tackling this in the morning.
Hotshot
Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
First, what year ('75?) and what ignition? (points or electronic)
First, check to see if you do or don't have spark. Pull the coil wire out of the distributor cap and hold it about a 1/4" away from a good ground. Have someone crank the engine over. You should see a strong, blue white spark. If you do then the ignition itself is okay. If there is no spark, then we need to know what type of igniton to properly trouble shoot it.
First, check to see if you do or don't have spark. Pull the coil wire out of the distributor cap and hold it about a 1/4" away from a good ground. Have someone crank the engine over. You should see a strong, blue white spark. If you do then the ignition itself is okay. If there is no spark, then we need to know what type of igniton to properly trouble shoot it.
Fleet Mechanic
Joined: Nov 2010
Posts: 1,501
Likes: 1
From: Axtell, TX
If you do have spark, then pull the cap on the distributor and make sure the rotor still spins when you turn it over. If it doesn't then you've probably snapped the shear pin in it. I've done the same thing. Cruising along just fine and.....BOOM! I was like Fuuuuuu.... Turns out it was only the shear pin failing causing a backfire. Easy to replace, just make sure you find all the pieces of the pin.
Senior User
Joined: Dec 2011
Posts: 142
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From: Round Rock, TX
Usually when you have one backfiring its running lean or the timing is out of whack on it. Pull the cap and turn it over to see if the rotor is even turning.
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Post Fiend
Joined: Apr 2008
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From: Big Sky Country
That's my guess as well. (or the ICM gave up the ghost).
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Posting Guru
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From: Alston, MI
did the truck sit for a while before you bought it? mine did something similar, turned out a large chunk of debris from the fuel system got in the float bowl and plugged up the jets. i was able to limp it home, but it would run on 6 cyl, then 4, then 3, then back to 4, then it would run on 8 for a little bit, then it would run on 6 again, etc.
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Junior User
Joined: Jan 2012
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UPDATE: Went to go mess with the truck to see what was up.
I have spark. And compression.
Turns out this 4barrel Holley carb is being a PITA
The carb is flooding like crazy without any throttle. Just dumping fuel..
Floats are probably sticking.. or something weird.
Im going to take it in and get it tuned, cleaned and rebuilt.
Unless there is another recommendation
I have spark. And compression.
Turns out this 4barrel Holley carb is being a PITA
The carb is flooding like crazy without any throttle. Just dumping fuel..
Floats are probably sticking.. or something weird.
Im going to take it in and get it tuned, cleaned and rebuilt.
Unless there is another recommendation
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