Spring's Here - First Ride
Thread Starter
Burning Brakes
Joined: Sep 2001
Posts: 1,193
Likes: 194
From: East Coast
Spring's Here - First Ride
Took the cover off my 67 (327/300hp) and went for a 1+ hour shake out cruise. NE weather was about 50* and sunny and road salt appears to have been washed away.
Had a small issue during the first 30+ minutes of my ride. Car was back firing a little while cruising along at 1800-2000 rpm. Eventually as I continued to cruise the back fires seemed to stop. Car ran great otherwise, idled fine, accelerated fine, ran a little cooler than normal though.
Could the back fires be cause by old gas? I did put it away with stabil mixed into the gas.
Had a small issue during the first 30+ minutes of my ride. Car was back firing a little while cruising along at 1800-2000 rpm. Eventually as I continued to cruise the back fires seemed to stop. Car ran great otherwise, idled fine, accelerated fine, ran a little cooler than normal though.
Could the back fires be cause by old gas? I did put it away with stabil mixed into the gas.
Le Mans Master
Joined: Feb 2012
Posts: 5,372
Likes: 2,880
From: Western Massachusetts
2024 C2 of the Year Finalist - Unmodified
2023 C2 of the Year Finalist - Unmodified
2019 C2 of Year Finalist (stock)
2015 C2 of the Year Finalist
Took the cover off my 67 (327/300hp) and went for a 1+ hour shake out cruise. NE weather was about 50* and sunny and road salt appears to have been washed away.
Had a small issue during the first 30+ minutes of my ride. Car was back firing a little while cruising along at 1800-2000 rpm. Eventually as I continued to cruise the back fires seemed to stop. Car ran great otherwise, idled fine, accelerated fine, ran a little cooler than normal though.
Could the back fires be cause by old gas? I did put it away with stabil mixed into the gas.
Had a small issue during the first 30+ minutes of my ride. Car was back firing a little while cruising along at 1800-2000 rpm. Eventually as I continued to cruise the back fires seemed to stop. Car ran great otherwise, idled fine, accelerated fine, ran a little cooler than normal though.
Could the back fires be cause by old gas? I did put it away with stabil mixed into the gas.
Dan
Le Mans Master
Joined: Feb 2012
Posts: 5,372
Likes: 2,880
From: Western Massachusetts
2024 C2 of the Year Finalist - Unmodified
2023 C2 of the Year Finalist - Unmodified
2019 C2 of Year Finalist (stock)
2015 C2 of the Year Finalist
Race Director
Joined: Jan 2007
Posts: 14,977
Likes: 3,364
From: NYC NY
Hopefully nothing more than a bit of a slow wake up from the winter hibernation.
I'm with Frankie. Some fresh gas and some fuel system cleaner and another spirited ride.
See where it goes from there.
I'm with Frankie. Some fresh gas and some fuel system cleaner and another spirited ride.
See where it goes from there.
Team Owner
Joined: Aug 2007
Posts: 58,061
Likes: 7,146
Army
Exhaust backfire (some call it "afterfire") is fuel igniting in the hot exhaust pipe...most often it happens on deceleration (so yeah you wouldn't be hitting the redline..)
Sometimes its a simple as a loose exhaust manifold ...as you come off the gas engine vacuum spikes and draws in air creating a lean condition.
But try the suggestions above before you go medieval on the issue....
Sometimes its a simple as a loose exhaust manifold ...as you come off the gas engine vacuum spikes and draws in air creating a lean condition.
But try the suggestions above before you go medieval on the issue....
Last edited by Frankie the Fink; Mar 22, 2019 at 07:35 AM.
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