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i went out of context... it will crank but not fire. Last night my friend came over with snap- on scanner. I had codes for open/ short in ASD relay, and a code for the crank sensor. After testing, scanner picked up 50 something crank signals, and only 4 cam signals. turns out the TJ engine was...

I removed distributor cap, and spark plug #1. Placed my finger over spark plug hole while a buddy cranked, and I watched pointer. Looked like it was right on 1 at compression

Machined cylinder head off my friends 1999 TJ Sport 4.0, can’t get it to turn over. Checked fuel, spark, even compression. Had fuel pressure whole time, and Injectors were pulsing. I put a dab of dielectric grease into every connection I removed, including crank position sensor. After further...