4.3 GMC Sierra engine

Anonymous
timer Asked: Nov 9th, 2013
account_balance_wallet $5

Question Description

4.3 GMC engine starts good idles perfect have checked it on scanner 3 times and it says everything is working fine shows no codes catalytic converters have been repaired new fuel pump and filter,EGR valve is good fuel body is good , have had it to the garage 6 times with no change in results above 1500 she coughs through the air chamber and fuel body. would anyone please help me

Tutor Answer

yaser
School: Rice University

this sound like back fair if its an old 4.3 could be wrong firing order bad fuel mixer if new 4.3 could be burnt or bind valves crack intake manifold .if you need more help i need more info what year and model is it 4.3 vortec engine etc

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Review

Anonymous
Goes above and beyond expectations !

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