Engine misfire? - multiple cylinders not firing?
Forum: C3 Engines, Driveline and Handling
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Hello Forum members I have an interesting problem that I hope isn't serious. I have a 1979 L48 with just over 60k miles. When I bought the car, about 500 miles ago, the car would spit carbon out the exhaust pipes at initial start up. I changed the plugs to the correct heat range, AC Delco R45TS and everything was great. I recently went to start the car and go for a spin but the car was running really rough and would stall on me. It seemed as though the engine was flooded because I would have to keep the pedal to the floor in order to keep the engine running to limp it back inside the garage. I opened up the hood and was moving the spark plug wires thinking they may be loose and noticed something really strange. The #3, 4, 6 and 7 cylinder headers were hot but the rest were slightly warm at best. Any ideas on what's wrong? Hopefully I just need a tune-up.
Any and all comments and suggestions are greatly appreciated. Thanks in advance for your replies.
Phil
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Duncanville, TX - USA
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Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
Sounds like you either have a carb problem, or something with the ignition. Since you seem to have dead, or mis-firing on the 1-8-5-2 cylinders, but the 3-4-6-7 cylinder are firing, it appears that you have one side of the carb not feeding fuel into the intake properly. Think I would remove all the plugs, and see what they look like.
I think you'll prolly wind up removing the carb and having a look at it, or just rebuild it.
I think you'll prolly wind up removing the carb and having a look at it, or just rebuild it.
Joel Adams
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Bad dist. cap or rotor? Bad wires? Bad plugs?
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in Forum: C3 Engines, Driveline and Handling
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