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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Jun 2002 Posts: 53 'Bolter | | 'Bolter Joined: Jun 2002 Posts: 53 | I've got the 307 in my '70 running, but it doesn't seem to be firing on the no. 1 cylinder (no timing light flash). I have replaced the rotor, dist cap, sp wires and plugs, but still no spark. Seems to be firing on other cylinders. Any ideas about what might be going on? Very frustrating and hard to time correctly with no fire on no. 1!
53 Dumpy
1951 Chevy 3100 "Ernestine"
1970 Chevrolet C10 "Ol' Blue"
1940 JD "long-hood" B
1959 Jeep FC-170
1960 IH B275
2013 Chevy Silverado
2023 GMC Denali 2500HD
| | | | | Joined: Dec 2005 Posts: 2,557 'Bolter | | 'Bolter Joined: Dec 2005 Posts: 2,557 | I had the same problem with a 216 . It was the number one spark plug was bad.
1951 3100 Chevrolet1951 Chevrolet Suburban CarryallImage"A house is built with boards and beams. A home is built with love and dreams." "Look deep before you leap !!!" / "Everything is Everything" "If I say a mouse can pull a house, hitch him up"
| | | | | Joined: Jun 2005 Posts: 388 Shop Shark | | Shop Shark Joined: Jun 2005 Posts: 388 | How is it known that it is not firing on No. 1? Does the engine run the same with the No. 1 wire disconnected as it does when the wire is connected to the sparkplug? Does the timing light fire when it is connected to another cylinder, such as No. 6, which is 360 degrees after No. 1? Try using a plug and wire (of the appropriate length) that are known to fire ok on another cylinder. | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Is your point gap correct. If the gap is to close & the dist cam has a some wear or is bent it can not fire on one cyl. Like Hoyt says you can time it on #6. It is the same.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | |
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