Why is there no spark to sparkplugs on a 1970 oldsmobile 350 rocket

SOURCE: engine cranks ,but no spark.

ain t many more parts to electrical system left... i had same problem once n it was my ignition modulator.located under distributer.**** i can t remember,i think my car would not turn overfrom that.or only other thing could be a fuse.i 'd check every fuse too .hope this might help.

SOURCE: truck has no spark changed fuel pump fuel filter

Odds are it is the $20.00 ignition control module but that may be another fluke change out of parts. LOL

SOURCE: 1997 chevy silverado 1500 350 vortech, new fule pump not working

before you drop tank again, check fuses & relay.then disconnect fuel line @ filter turn key to on position should hear fuel pump run and get gas stream out of line. if no flow from line new pump faulty be sure & remove negative battery cable first good luck.

SOURCE: engine miss,replaced fuel

Do a compression test and make sure it is not a mechanical problem.Could be burnt valve,bad cam,or broken valve spring.If you know which cylinder is missing pull the valve cover and check the valves and see if they are all moving up and down evenly when you turn the motor over.Just disable the vehicle from starting or you can do it with it running.Hope this helps.Good luck.

SOURCE: 98 jeep cherokee wont start it is not getting fuel

i just had the same problem on a 1997 4.0 . crank sensor is most likely bad you can spray starting fluid in the intake tube and car will start meaning you have spark but injectors will have no power I.E. crank sensor is bad 38.00 dollars at local parts store dealer told me 170.00 dollars make sure you push it all the way in when you install it i just posted a fix for this on this site today . after you start the car if it gives a misfire code and check engine light comes on loosen the crank sensor bolt and push it in again then tighten the bolt the cardboard on the sensor for the air gap wares off a little bit enabling you to push the sensor in a little bit more misfire should be gone there is only a few thousands of an inch adjustment for the air gap and it makes a difference. hope this helps