I have had my 92 for about a year now, and for most of that time, I have had a rough idle/slight miss intermittently.
I have replaced
-Lift pump(has low pressure 2nd gen now)
-Injectors (New set now, but had the original ones redone a while before)
-New feed line from the tank, tank cleaned
-Fuel preheater deleted, new fuel filter
Other than the injectors (6x10 VCO), the only other performance modifications I have are a 60mm compressor on my stock h1c, and a performance fuel pin.
The truck has a pretty noticable miss when revving sitting still or holding revs sitting there. Most times it will idle sorta rough, but smooth enough. Every now and then, it will miss very badly for a few seconds-if I have been sitting at a light for a minute or two. Never misses under load.
As the misfire comes and goes, so does the level of power that the truck has.
I am very sure that the problem is not related to injectors, and I have made sure the injection pump has an air free, good supply of fuel.
What could be causing this issue? Any suggestions would be awesome.
I have replaced
-Lift pump(has low pressure 2nd gen now)
-Injectors (New set now, but had the original ones redone a while before)
-New feed line from the tank, tank cleaned
-Fuel preheater deleted, new fuel filter
Other than the injectors (6x10 VCO), the only other performance modifications I have are a 60mm compressor on my stock h1c, and a performance fuel pin.
The truck has a pretty noticable miss when revving sitting still or holding revs sitting there. Most times it will idle sorta rough, but smooth enough. Every now and then, it will miss very badly for a few seconds-if I have been sitting at a light for a minute or two. Never misses under load.
As the misfire comes and goes, so does the level of power that the truck has.
I am very sure that the problem is not related to injectors, and I have made sure the injection pump has an air free, good supply of fuel.
What could be causing this issue? Any suggestions would be awesome.