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Cleaning Carburators? Tech Question
I have an old 93 isuzu pickup that I bought 2 years ago for $500. It is so nice to have a beater POS that I can beat to hell. (I have another car and a motorcycle for more reliable transportation). It has 197k miles on it, and was running good until this week.
When it is warm, it seems to totally lose power - it is NOT a misfire issue (I have a great general knowledge of cars, and have built and replaced engines myself - but only really have tech knowledge of FI cars). I thought I was totally losing compression since it has so many original miles and really felt like it was losing power. But today I did a compression test and the results were 150psi across the board +/- 5 psi which is well within spec.
Upon inspecting the carbs, it looks like on one of the barrels (its a two barrel) the butterfly valve for the choke (i think) doesnt seem to be doing anything. It has no spring resistance to it - meaning that if I flip it to one side, it just stays there. I am thinking that this could be the problem. Maybe the valve is flapping around and choking the engine? Does it sound possible?
And if so, would cleaning the carbs help? I don't want to just spray carb cleaner in there, but would rather remove them and fully clean them.
Any advice on this? Also - I have a Chiltons manual - but they are pretty half-ass. But at least it give me torque specs and stuff, but little about cleaning the carbs.
Just figured with the amount of people on this board, someone has done this at least a few times before.
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