loping at idle

jd9420

New member
I have a 97 f350 all stock that lopes pretty bad at idle it doesn't do it until it gets warmed up where should I start looking to solve this problem
 
i have heard that the hard parts inside the injectors begin to wear and cause this kind of problem.

I see you have a lot of miles on your truck. sounds like its time for a injector rebuild. new plungers and barrels
 
the stock lift pump will cause this too.. id say it could be a combo of both. sounds like its time to go with an aftermarket fuel system and get some new injectors or have yours gone through.
 
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