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| | | | Joined: Jun 2010 Posts: 71 'Bolter | | 'Bolter Joined: Jun 2010 Posts: 71 | The engine in my 67 C10 is giving me fits. It started about 2 weeks ago the day after putting some fuel in the tank. Was letting it run while hooking a trailer up. It went from purring like a kitten to shaking like a hula dancer & dying in a matter of seconds. I suspected bad gas but a friend of mine who knows more than me didn’t think so. The next morning I purchased plugs, points & condenser and installed them. Set the dwell at 31, timing @4 deg btdc and the rpm at 550. Seemed to fix it ran as good or better than before. Did all this on the afternoon so didn’t drive it but a short distance. The next morning it was back to not wanting to run. Today I was able to find a cap, rotor & plugwires local & installed them. Had the truck running great again. Left it running for about 10-15 minutes while I put away tools. In that period of time it was back to running bad. If I push the choke in much past 1/2 way it sputters, backfires and dies. Does this sound like fuel or carb problem or is there something else I’m missing? | | | | | Joined: Dec 2005 Posts: 547 'Bolter | | 'Bolter Joined: Dec 2005 Posts: 547 | Sounds like you got a bad ignition coil. After getting my 235 back together and trying to tune it with my old ignition set up, it would run for about 15-20 mins and then die. No matter what else was changed, except when I swapped in my Langdon HEI dizzy and coil. That fixed the issue.
58' 3200 235 3-speed/OD
| | | | | Joined: May 2007 Posts: 1,718 Moderator: 60-66 Trucks; North Eastern Bolters | | Moderator: 60-66 Trucks; North Eastern Bolters Joined: May 2007 Posts: 1,718 | Did you check and clean the carb filter yet? Are you picking up debris after a bit of running and then debris settles back in the line when off? | | | | | Joined: Jun 2010 Posts: 71 'Bolter | | 'Bolter Joined: Jun 2010 Posts: 71 | Checked the coil with an ohm meter. Showed to be within specs, 1.5 ohms from + to - post & around 9500 between - and hole in middle of coil.
No I haven’t checked the filter. Forgot it had one. If it ever stops raining I’ll check that today. I did rebuild the carb about 2 years ago so I’m assuming it’s not the trouble. But with today’s fuels I could be wrong. | | | | | Joined: Apr 2005 Posts: 7,440 Bolter | | Bolter Joined: Apr 2005 Posts: 7,440 | The key to this whole mess is the one thing you did to alter the normal. You put gas in it. You got bad gas (water) or the new gas stirred up some trash in the tank as Hambone suggested.ðŸ›
Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
| | | | | Joined: Dec 2008 Posts: 1,922 'Bolter | | 'Bolter Joined: Dec 2008 Posts: 1,922 | Bad secondary voltage always gets worse with increased load. | | | | | Joined: Jun 2010 Posts: 71 'Bolter | | 'Bolter Joined: Jun 2010 Posts: 71 | Well I figured out my problem. Checked the filter in carb, when tightening the fitting I notice d the carb move. Both of the screws on the bottom of the carb had worked loose causing a vacuum leak. Hopefully that was it. It’s running great now | | |
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