|
64postie Oct 29th, 02, 11:53 AM Hey guys, maybe some one can help, I am looking at a car with a big block in it. I want the motor, i drove the car runs great on idle but when you step on the load pedal it starts making a popping sound other than that the motor runs well. Thanks Ralph. Randy Mosier Oct 29th, 02, 4:32 PM It's coming from the engine I assume? It could be that the timing doesn't have enough initial advance, or the accelerator pump could be shot. Either one will cause this. Does it pop once or twice and then recover, or does it sound like a continuous series of backfires and pops? Milan Oct 29th, 02, 4:44 PM Cam lobe gone bye bye. ------------------ 67 BB Prostreet Camaro COMBAT RAT 71 BB Chevelle (SS clone) 80 Camaro Z28 355 SBC 2002 35th anniv. SS Z28 Old Longboarder Oct 30th, 02, 10:21 AM Exhaust valve not opening due to flat cam, bad/broken lifter, broken push rod, broken rocker stud etc. 64postie Oct 30th, 02, 2:07 PM Thanks for the info, now iguess i will see how cheap i can pickit up. Even if the cam is gone its going to be rebuilt. Thanks again , Ralph Randy Mosier Oct 30th, 02, 4:34 PM Hold up!! Check the basics first. That's why I mentioned the timing and accelerator pump. You don't want to go to all the trouble of pulling the cam if the problem is just a weak accelerator pump in the carb or a bad vacuum leak. chevelliky Oct 30th, 02, 9:52 PM My 396 pops at any cruising rpm. Sounds crisp in neutral, and runs strong and quiet under load, but once I let it cruise it drives me crazy! -Scott 64postie Oct 31st, 02, 12:45 AM Randy: Good call on the big block, went back today and set the timming. Now the car run and pulls like it should, It runs so good i dont know if he,s going to let it go now. Guess i,ll wait an see what happens i got first dibb,s on it anyway just for getting it running again. Thanks Ralph | ||