Compression Ignition Addict
Join Date: Dec 2007
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This is your '99?
If so, watch the tach as you crank it over on the starter. If you see the needle moving up slightly as the engine turns, it's a good indication the CPS is doing it's job and not your problem (you said you tried the original again - right?).
Coincidences do happen, the current problem could be unrelated or not the CPS itself but rather something got disturbed when you worked on it. If not the CPS, or the plug going to it, start with the basics....
WTS Light? - do you get it when you first roll-on the key?
Tach Movement? - does the tach needle move up slightly when cranking?
Fuel - pump runs? Fuel refilling filter housing? Tank below 1/4?
Is it cranking fast enough? - it won't even TRY to start if cranking too slowly.
Is your truck "chipped"? If so, remove it as a Test