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Missing till builds Boost

819 views 4 replies 4 participants last post by  powerstroke742008 
#1 ·
one of the guys i work with has a 95 7.3 with around a 135k on it. it has exhaust and an intake. the truck misses really bad until it builds boost then runs like it normally does. i dont know much about the 7.3's so any help will be greatly appreciated. thanks guys
 
#2 ·
Could be low compression, the boost helps build compression until it will
fire on that cylinder... Just a guess..
 
#4 ·
sorry it has 235k on it. would a compression related problem start all at once? he replaced the cam position sensor and it helped a little
 
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