Engine not starting?

My Chevy G20 conversion van equipped with an aftermarket alarm (siren disabled) and kill switch. Last month on a few different days when I started it there was a 2 or 3 second delay before it cranked and started right up. Three days ago I shut off my van. When I tried to start it 30 minutes later it would not start. When you turn the key no noise, no clicking, nothing. After sitting and trying it for 3 hours it finally started like nothing was wrong. I drove across the street and shut it off. After 2 1/2 hours it started right up and I drove around the corner. I tried to start it again 30 minutes later and nothing again like earlier that day. This time it started right up 8 hours later. The next day it would not start all day. The next day I hit the starter with a board a couple different times. Then I tapped the alarm module (under hood on firewall) with a screwdriver and it started right up. I drove for an hour and shut it off. After 30 minutes it would not start after tapping the alarm module. It wont start at all now. I need the least expensive way to fix it since I'm jobless. Thanks!

I

Left work car run no noise
turn off when picked up child from school
started fine about 1 block later a rattling from the front of the car.
Went into post office came out would not start.

Don't know what you mean by spark but it had fuel pressure and it was not hot when rattling.

Has and had and there is spark.

New battery, new terminal ends, rebuilt starter, cylanoid tested good. After each of these were done van started on it'd own or after van being jumped off. Van would start fine for 1 or 2 days than suddenly wouldn'
t start. Haven't been able to start even gettg jumped. Trief starter fluid. Noticed no gas smell after pumping and pumping accelerator. Niw I. Thr process removi.G fuel filter. May be clogged? Single female trying to fix with little help. Pleade advice. Thank you.

Battery has no power after trying several times to start it, but it did sound like it wanted to but just would not click to start before the battery lost all power.

How do I check for spark in a 1989 chevy G20 conversion van. Its the 5.7 350. The problem is that its been sitting for a while and doesnt want to start. It will crank and crank and crank but wont catch. Im thinking its the fuel pump because I dont hear it or smell any gas while its trying to start. Im hopeing its a simpler problem so any suggestion would be greatly appreciated.

'88 G30 5.7 TBI w/200K+ Was doing 45 mph and goosed it thru a yellow light. Let up on the gas to slow down and the engine died. Tried restarting when stopped. It fired then quit once key switched back to on. Tried again a few times and the motor just rotates. Check for codes and only got 12.
It's done something like this before. In 1995 the coil pick-up went out but it threw a code. Then in 2003 the fuel pump went out and think it set a code. In 2010 it began running lousy after being idle for 3 years. Traced it to a bad EGR valve and broken vacuum hose to the EVAP canister. Replaced those along with the CTS and O2 sensor since they were ancient. That was the last repairs until now. I'll be looking inside early in the morning when it's cooler (am in Texas) and was hoping for some insights as to where to check since no codes were set. Thank you!

The TBI injectors are spraying gas in a pretty heavy cone. Got no spark using a HEI spark tester so installed a new Standard coil (the old one was original equipment). Tried again and still no spark. Tried a good coil to dist. Lead with no luck. The cap and rotor are fairly new. I thought the ignition module and coil pick-up are OK if the injectors spray?
I believe the motor quit before the ECM could pick up a code.
Thanks!

Electrical problem
1986 Chevy Van V8 Two Wheel Drive Automatic

Hi, the problem is 2 weeks ago when I would shut off the van and than try to start it again there would be no power at all, than I would take the shift move it up and down put it in park and pull up on the shift it would show lights and start. This van also has a tilt steering wheel. Im guessing that the saftey nutural switch is in the steering wheel, not on the transmission. Any help would be appreciated, thank you.