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Re: 93 astro van turns over has juice but wont fire
A real quick way to test your fuel pump is to take a rubber mallet and have some one crank the engine while you beat on the bottom of the gas tank if your vehicle starts you have a bad fuel pump and it should be removed and replaced with a new one,
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Sounds like the problem is no spark to plugs. check for spark to and from coils. also the wires and spark plugs. It needs spark and fuel to start. If check engine light is on, Its a possibility that its a bad cam sensor. Check above first! If light is on you can go to any auto parts store so they can read the codes, with a scanner for free. and tell you the problem area. Good-Day!
I would try making sure spark plug wires are put on in the correct firing order. This is a common mistake in tune ups. Most intake manifolds have the firinging order cast in. Plug gaps correct? I cant come too far away.
Do you notice crank when you turn over the key in ignition to start.
Does it turn over but does not start, or no start nothing at all.
If its not cranking and nothing happens when you turn the key, then its battery and starter related problem, both needs to be inspected.Either battery is not completely charged or its weak battery,that is not holding charge or its faulty battery or its connections are loose.--------
BUT if it is cranking and not starting, this clears that battery has juice in it and battery is doing its job and other possibilities needs to be checked.
The other possibilities are ,is the fuel pump coming on when you turn the key to start,is the spark is noticed at spark plug, is the check engine light coming ON.
For more troubleshooting regarding this problem,click the link below:---
This should help.Thanks.Helpmech.
#1 NEED TO VERIFY SPARK AT SPARK PLUGS # 2 CK FUEL PRESSURE AT SCHRADER VALVE ON FUEL RAIL ,,PRESSURE DEPENDS ON TYPE ENGINE ....IF NO SPARK AT SPARK PLUGS CHECK SPARK FROM COIL WIRE , IF NO SPARK AT COIL ,CHECK VOLTAGE TO IGNITION COIL SHOULD BE 12 VOLTS, IF NO VOLTAGE AT COIL ( KEY ON ) CHECK FUSES THEN IGHITION SWITCH. IF NO FUEL PRESSURE AND FUEL PUMP RUNS REPLACE PUMP .. CK VOLTAGE TO FUEL PUMP WHILE CRANKING . CK USING PUMP GROUND WIRE AT THE PUMP CONNECTOR THIS WILL PROVE GROUND ALSO. USE TEST LIGHT TO VERIFY
check and make sure you have plenty of fuel in the tank. gas light should not be on as long you have plenty of fuel in the tank unless you have faulty fuel level sensor. check if you getting sparks and fuel, pull wire and one plug out, ground it to the vech have a friend turn over the engine and see if you getting strong sparks. no sparks check coil having 12V, good coil, cam sensor faulty. check if you getting fuel, pulling hose from the fuel filter line, point it down ward wrapping the end with clothes covering the hose and turn the engine over, see if you getting proper fuel and good pressure coming out of the line using your thumb slightly cover the fuel line. no pressure or fuel, check the fuel pump, good pump, faulty crank sensor. both crank and cam sensor work the same way, one telling computer to send sparks to the plugs and other turn on the fuel pump.
the plugs are probobly fouled from all the cranking...try unplugging fuel pump fuse and cranking for a while to burn fuel from plugs...may need to change them...also change the oil when it starts,as all that unburned fuel goes into crankcase...good luck...Lee