if spark and engine are good test fuel works sprayed in the intake.
if engine is good then spark is bad if test fuel fails.
just that simple, all gas engine, on diesel, no spark needed.
rare exceptions, love em'/ CAT melted and exhaust 100% blocked, abut fails a vacuum test cranked, and/ or fails compression too. (good engine clogged exhaust 100%)
if spark seems right use test fuel next, even with FI fuse pulled so engine cant flood.
can of test fuel (CRC brand with top end lube if paranoid ,<used as valid not bad word, justified.)
if engine is good then spark is bad if test fuel fails.
just that simple, all gas engine, on diesel, no spark needed.
rare exceptions, love em'/ CAT melted and exhaust 100% blocked, abut fails a vacuum test cranked, and/ or fails compression too. (good engine clogged exhaust 100%)
if spark seems right use test fuel next, even with FI fuse pulled so engine cant flood.
can of test fuel (CRC brand with top end lube if paranoid ,<used as valid not bad word, justified.)
http://www.fixkick.com