SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: SMOOVE_RYDE on July 27, 2012, 10:24:53 AM

Title: BACKFIRE/ LEAN POP @ IDLE
Post by: SMOOVE_RYDE on July 27, 2012, 10:24:53 AM

I HAVE A 71 OLDS 455, HAD BEEN SITTING WITHOUT STARTING IT FOR ABOUT A 2 MONTHS. WHEN I STARTED THE MOTOR IT STARTED RIGHT UP, BUT AT IDLE IT POPS. SEEMS LIKE ITS ON A SPECIFIC ROTATION (MEANING ROUGHTLY SAME INTERVALS BETWEEN POPS) ANY INFO WOULD BE GREAT, WAS TRY TO GET MY FLOATY OUT TO LAKE PERRIS THIS SUNDAY?????

Title: Re: BACKFIRE/ LEAN POP @ IDLE
Post by: USCvictory on July 27, 2012, 11:32:16 AM

Sounds like a misfire and most likely in the same cylinder(s). Should check the routine items plugs, wires, fuel filter, dizzy and parts that hook up to the dizzy. Reading the plug can help narrow down what cylinder it can be.

Title: Re: BACKFIRE/ LEAN POP @ IDLE
Post by: Willow Wog on July 27, 2012, 01:00:26 PM

Quote from: SMOOVE_RYDE on July 27, 2012, 10:24:53 AM

I HAVE A 71 OLDS 455, HAD BEEN SITTING WITHOUT STARTING IT FOR ABOUT A 2 MONTHS. WHEN I STARTED THE MOTOR IT STARTED RIGHT UP, BUT AT IDLE IT POPS. SEEMS LIKE ITS ON A SPECIFIC ROTATION (MEANING ROUGHTLY SAME INTERVALS BETWEEN POPS) ANY INFO WOULD BE GREAT, WAS TRY TO GET MY FLOATY OUT TO LAKE PERRIS THIS SUNDAY?????

Could be an exhaust leak.

Title: Re: BACKFIRE/ LEAN POP @ IDLE
Post by: crewchief22 on July 29, 2012, 05:35:50 PM

Any signs of rodents?  Inspect your spark plug wires closely.

Title: Re: BACKFIRE/ LEAN POP @ IDLE
Post by: SMOOVE_RYDE on July 30, 2012, 11:26:36 AM

SO STUPID ME :banghead: HAD THE #2 AND #4 SPARK PLUG WIRES CROSSED, I PUT THEM WHERE THERE SUPPOSED TO GO AND EVERYTHING RAN FINE. WASNT ABLE TO GO TO PERRIS, I DIDNT KNOW EVERYTHING ABOUT THE INSPECTION. I WASHED MY FLOAT TOY THE NIGHT BEFORE, SHE WAS A LITTLE DAMP AND DIDNT PASS THERE MUSSEL INSPECTION....GUESS I SHOULDVE DID ALL ME RESEARCH!!!