01 silverado no start, fuel in oil, good spark, cranks opposite

fuses good< oops
scan the PCM see errors cranking OMG it tells you why:? sure can.
forgot the 6 new spark wire plug set, replaced 1 by one never all at once, 6 new OEM type spark plugs and gaped correctly
22 year old spark parts are no good ever.
test for spark on all 6 yet, spark is 1st or there can be no FIRE.

4.3L cranks but will not start and run and stay running.(problem1)
fire cant be seen, but spark can.
1,2,3 engine,spark, fuel good 1,2,3 in that order
spark and fuel can not run a dead engine, so 1 is first engine'
compression good 150psi up not lower, all near same
next is spark if EFI sees spark
actual fuel pressure not told just OKay. pressures matter big time in EFI, and at cranking for sure. then idle and WOT later.
engine is free running so all tests are safe, cranking too.
the service manual covers all fuel checks cranked, balance test and leak down tests.

watch scotty
https://youtu.be/064Ilsz8Fzg

I would have probably given it a total tune-up, first, checked all the fluids. New antifreeze. Changed the oil and filter. Drained the gas tank, used fresh gas. Pulled the spark plugs and belt, put a drop or two of oil in each cylinder, then turned the crank by hand before trying the starter motor.
Then, if it cranks good but won't start, have a helper crank it while you visually check for spark at the spark plugs. If spark everywhere, use a gage and check proper fuel pressure. Also, check fuel injector pulse. Any applicable trouble codes?

the coil does not crank the engine , the starter does that, sorry.
(if you ever had to hand or foot crank and engine , youd under stand that. (like motor cycles or boat engines, or per 30s cars.)

in fact will crank all day with no spark parts on car..

x2, the scan tool does tell you why there is NO STARTS, CRANKS OK. The pcm can detect, one missfire in 10 cmp;ckp signals.

• CRANK FOR 5 SECONDS
• release, key
• scan tool has DTC errors?, read the believe them.

no engine stated of 4 or more,

U checked everything but spark,
why, check spark at all cylinders, all most fire or the engine will not run or stall.
That test be first, if not starting (AFTER SCAN TEST)

IF NO spark fuses are next , not last.
lets do no start fails tests. (cranks perfectly 200 to 300 rpm)

1. : check fuses
2. key on, CEL lamp must glow, if not , ECU fuse blown.
3. crank with scan tool , see P03xx DTC errors, see RPM dead.?
4. check for spark? got spark x4 or times number of cylinders?
5. got spark try test fuel now, runs for 3 seconds?
6. yes, runs on test fuel now means lost fueling
7. no, dont run on test fuel, means, 1 to 5 done wrong above or engine compression bad.
8. bad fueling, huge number of tests. check fuel pressure now.

confused, try a shop and watch them, learn.

it sounds like it kicked the timing chain , the last time you shut it off

THE JEEP ZJ ! NO ENGINE STATED, so real hard to help !!!!
cranks robustly (crank shaft actually turns, look)
and will not start.?
no engine stated, there are many , must know engine to fix them.
so did you check spark at all cylinders. ?
and timing of them.
and spark wire firing order, one guy had a friend swap them for fun.
(he had a accident later.. LOL)
if spark is hot on all 4 or 6 cylinders.
and #1 fires near zero on the pulley, then
try test fuel, spray it. runs for 3 seconds and sounds good.
that mean engine and spark are good and you lost fueling
the steps are same 1920 to now, on mr. otto cycle engines.

a 60k tune up is more.
1: spark plugs , J plugs, stock & gap'ed right.
2: spark wire. new.
3: cap and rotor.
4: air filter, and fuel filter.

when you replaced the dizzy(why?) did you read the FSM
to retime it, it times injection too.
be sad to make it worse throwing parts on top of a good dizzy

there is no reason to replace the DIZZY unless
one of these fails #42 or 54. 54 is dead dizzy Cmp sensor.
ever see this? DIAGNOSICS.
https://sites.google.com/site/thezjpage/zj-diagnostic-trouble-codes-dtc-s

got a ignition spark strobe light?, this is childs play.
check spark x6
check firing near TDC #1 , near 0 degrees. see hood spec for exact spec. (open hood ,USA, look up, see EPA, timing spec, BINGO.)
and firing order, do not cross wire to wrong plugs
do not guess at firing order or rotor direction or all this fails.
true for all cars with dizzy,
the fsm is there. no need to guess. ever

ZJ
http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service

1. if engine is good (compresson)
2. and spark is good
3. and not flooded, (look)

if not flooded it will run for 3 seconds, at least.
if flooded
use super secret , unflood mode, crank WOT
wide open throttle, its in the oper , guide this for all cars made, 1988 to now.

old post. but will answer.
the starter only cranks the engine, that is it's only job.
if it cranks robustly (at crank shaft pulley ,see it) then its ok.
250 RPM is typical cranking speed. RPM
no starts are complex.
for any engine Gas, to start you needs 4 things.

1. ALL FUSE TO EFI GOOD, TEST THEM. CEL glows key on?
2. full engine compression and crank vacuum 5" HG or more.?>??
3. Spark , try a fresh tune up with fresh spark plugs. all 6 sparking.?
4. Fueling , must be right. not flooding , not starving

if spark and engine are good, all engines(most) will start with test fuel.
This one simple test. proves the engine is ok, and spark is ok.
and the fuel system is dead.
these checks , will let is work the 4 systems. that might fail.
this is the classic basics path.
and works 99.% of the time.

exceptions, are clogged melted cat.
or stuck wide open EGR
or ISC stuck closed, (no starting air.) use 10% throttle to prove that.
or flooding, if flooding use super secret unflood mode (opr guide)
hold the throttle (right foot) pedal to the floor, this cuts fueling
and the flooded engine starts, for full time or runs and floods and stalls again.
This is called basics , in all ASE books in print.
RTM.

For engine to run it has to have:
Fuel, air and spark.
So if it doesn't start, something's missing.
Is your fuel pressure OK? Is your spark present? Is ECM firing injectors?
Check all those basics and I'm sure you'll find what's wrong.

no spark crank sensor. good you getting fuel but with no signal from the crank sensor it will not fire up. can also be oil pressure switch so if the oil light wont go out while cranking the engine it can be this as well

You need to start from the ignition unit, if the engine cranks but does not fire then chcek for the fuel settings, if the fuel filter , fuel pump are in order, then check for the plugs, remove them and test for good intensity spark. If the coil and the triggers with the timings are good then the engine must fire. remove plugs , clean test and reset.

i would really change the fuel filter, spark plugs and that should do it