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C1500 pickup/
that was done backward, pump first? and bath in fuel.
the order is,
engine , spark and last fuel
are those spark plugs 27 years old,?
can not burn fuel with spark dead. test them all we do. spark tests
same goes on dead engines (mech)
we check engine compression first, 150PSI up and equal x8
then spark x8
IMMO fitted cars the IMMO lamp must not be glowing wrong.
then fuel tests
and air tests (you said added air is no cure , good test that)
means ISC dead , no air to start.
thanks that make any engine seem bad and is not really .
EGR stuck open
huge vacuum leaks (if maf based EFI)
CATS melted blocking exhaust and engine can not pump air
a vacuum test (cracking levels) proves cats not melted.
ISC valve stuck closed no idle air.
use the scan told more correctly?
1; connect up tool.
2: key on scan (nothing you said)
3:crank for 5 seconds.
4: release key (NOT OFF)
5: scan again, give a few minutes to roll out DTC'S if not push the pending DTC button, see them. roll out. using a real scan tool.
not a $13 lame code only reader.
ok still dead
remove fuel pump fuse or relay. (we are expecting flooded engine)
crank for 5 seconds to clear the flood at WOT wide open throttle.
then try in this state now, spray starter fluid, to induction.
3 seconds spray ,get 3seonds run time. repeat 3 times listen for engine damage. Noise.
last and not the least
cap and rotor and wires sets are no good, 27 years old ever
assuming me above battery charger keeps it charged
assumes Distributor not lost time. pulled and put back wrong. as vast folks do, all the time.
not told when it last ran perfectly (never seen it or?)
Usually if you flood it (by overchoking), you open the throttle wide open (to draw in more air to lean the mixture) while cranking starter.
Beings you had the spark plugs out you could have cranked it then, and let the engine compression blow the excess gas out the spark plug holes.
This will likely be one of two problems 1....Your battery , even if it is showing 12 volts may be bad and not giving you the necessary cranking amps to fully engage the starter and turn the motor over 2....Due to getting wet your wiring is corroded and needs to be cleaned, especially the ground, and then remounted tight. Try these and see if it helps
premium gas with some octane booster for a couple of tanks should do the trick because even though you cleaned the carbs there still is gunk and **** in the lines..i also suggest fogging the bike with seafoam good luck i hope this helps
Drain the carbs. chances are water condensation in the gas tank has built up in the float bowls. If that doesn't help, try a fresh set of spark plugs. Please rate my answer.
You will have to clean the carbs, it seems theres fuel (gas) starvation at those rpms., maybe the carb float chamber is low on gas,try to reset the float level, blow the main jets too.
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