bogs out an backfire through intake
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Joined: Jan 2015
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bogs out an backfire through intake
My bronco fires up nice but after driving down the road a few miles it starts acting up an wants to bog out almost like I'm out of gas but I have a full tank, if I throw it in neutral an hit the gas it won't let me go above 2500-3000rpms an backfires through the intake, like a nice pop. So I turn it off and restart it while rolling in (N) and it will work fine for a few more miles then it's all over again. It's got a new fuel pump and filter, I'm working on doing the O2 sensor right now but it's stuck good. And the smog pump is chirping a bit also will that cause this? It's been sitting for a few years before I bought it
Last edited by 92bronco302 4x4; Jan 19, 2015 at 01:36 PM. Reason: title wrong
Hotshot
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
well next would checking your fuel pressure at the rail with a pressure gauge. should be 35-40psi with key on and engine running. if the pressure drops when you rev the motor that is your issue or is anything less than what I mention when idling.
Hotshot
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
yea I don't believe that is enough. also when you say your timing is good what is it? should be set to 10-12*btdc with engine at temp and spout connector removed. Make sure you don't have any plug wires arcing.
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