I have recently replaced the spark plugs and plug wires and when I try to start the car, it will not crank. Underneath the air filter pan, it will backfire and sometimes smoke will appear. Before I replaced the S.P. and wires, it would start fine. I put the old plugs back in and even put the old wires back on and it will not start.
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did you try cranking with throttle open 100%
this clears flooding this cuts the injector(s) dead.
try fresh spark plugs, are the 10 years old?
try test fuel (spray)? run for 3 seconds,
if not, you lost spark check fuses.
if you have spark and it wants flood is the cam belt 10 years old too, if it slips it will not run again, ever.
until that is cured.
cranks but will not start still , after 40 days?
does it have spark to all 4 cylinders.
that be first.
and if rotor still spins cranking
if you fooled with spark plug wires, or tuned it up./
old post answered.
spray some starterfluid in there see if ur getting gas. check ur plugs and gaps. cap, rotor if none of that it may be a coil pack or the ICM a way to check the coil pack is to remove one of the spark plug wires from the cap an rotor an hold it close but not tuching the cap and turn it over to see if there is a spark if so that means the coil is good
On GM inline engines,cylinder #1 is the one closest to the front(pulley)end of the engine. If you pulled the wires off the distributor/coil pack,and don't know where they go,put one wire one at a time and crank it.If it doesn't backfire,repeat until it starts.(this is only easy on 4 cylinder or smaller engines)
Could be many things, but need to check compression first. Buy a compression tester and follow directions. Usually it will need rings AND valve job if it's near 150,000 miles. If not compression, change plugs, then wires, then cap and rotor, in that order. If not better, try Techron in your fuel for three tankfulls. WalMart has it for $9.
if its only missing at low rpm, then I would think the problem is electrical. try replacing the spark plugs and the plug wires and the wire from the coil to the distributer, and make sure the plugs are gapped properly. that will probably solve your problem.
The coil can be checked by measuring the resistance between the primary terminals, should be 1.33-1.55 ohms. Also check the resistance between the positive primary terminal and the high tension lead, should be 10.7-14.5 k ohms. Hold the spark plug wire (I usually use an old plug inserted into the bood). about 1/4 to 3/8 inch away from the block while cranking and see what kind of spark you get. If you get a good spark, look for something else. jeb