CHECK FOR VACUUM LEAK AT INJECTORS ON 1&3. PERFORM INJECTOR BAL. TEST. NO INTAKE PROBLEMS THAT I KNOW OF.
BUT HAVE HAD SOME INJECTOR TROUBLES. ( JUST SOME THINGS I HAVE SEEN ON THIS ENG.)
I GUESS YOU CHECKED FOR VAC. LEAK WITH SPRAY?
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fixed it today!tps read 16% at koeo.cleaned t/b ran acleaner thru inj.and decarbonizer in engine-truck ran great!thanks for the reply.