HELP!!! Holley 4180
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Junior User
Joined: Jan 2004
Posts: 66
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HELP!!! Holley 4180
Ive just installed a holley 4180 w/ an edelbrock performer 400 intake on my 79 bronco. i drove it all day yesterday and it ran great. I started it up this morning and it bogged down when i hit the gas. It also decided to backfire out the exhaust and carb
First, how would i tune the carb?
Second, what would cause it to backfire?
First, how would i tune the carb?
Second, what would cause it to backfire?
Laughing Gas
Joined: Jul 1999
Posts: 1,047
Likes: 22
From: Lacey, WA
Ok,
Did it do this bogging down and backfiring when you first cranked it up?
Did it stop after the engine warmed up?
If "yes" then I would look at the choke. When cold the choke may be closed too far.
Lee
Did it do this bogging down and backfiring when you first cranked it up?
Did it stop after the engine warmed up?
If "yes" then I would look at the choke. When cold the choke may be closed too far.
Lee
Laughing Gas
Joined: Jul 1999
Posts: 1,047
Likes: 22
From: Lacey, WA
Ok,
After it gets up to temp, blip the gas to get the carb off of the high idle. Then pop the lid on the air cleaner and verify that the choke butterly is open all of the way.
Also, is this a new carb or,..... rebuilt? Do you know it's history? In other words is this a known good working carb?
Check and make sure that the accel pump linkage is adjusted correctly.
Lee
After it gets up to temp, blip the gas to get the carb off of the high idle. Then pop the lid on the air cleaner and verify that the choke butterly is open all of the way.
Also, is this a new carb or,..... rebuilt? Do you know it's history? In other words is this a known good working carb?
Check and make sure that the accel pump linkage is adjusted correctly.
Lee
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