Have a 91 Subaru Legacy that won't turn over. Has happened one time before and a guy was over banged on engine trying to find what was wrong. pulled spark plugs, put them back in. Still would not start. Husband went out to try again in discussed and it turned over. Ran for a couple of weeks like normal. 

  Went out one morning and tried again and it won't start. Still will not crank. We have changed out spark plugs, fuel filter, poured gas in the carburetor, Changed out battery. We are lost what to try next. Can anyone assist?

Thank you

Edited December 9, 201510 yr by soileau216

If it's not cranking then it has nothing to do with spark or fuel etc. It doesn't have a carburetor either. It's a fuel injected vehicle. Don't just start throwing things at a problem you don't understand. You'll cause other issues.

 

The issue is battery or starter related or somewhere in between. Confirm that the battery is good and that the terminals are clean and tight. Even so, try moving them and re tighten to see if the connection is bad.

 

try giving the starter a few hard hits and see if that changes anything. If not, pull and have the starter bench tested. 14mm on top and 17mm on bottom usually. Check contacts etc on it as these commonly corrode and can often be cleaned up or replaced.

 

Check your fusible links in the fuse box under the hood.

 

Lastly would be the battery cables themselves. They can be tested by carefully running a jumper cable from the battery terminal to ground for negative or positive terminal to starter for positive. be sure to attach to starter first and be sure nothing grounds it before attaching to positive terminal and see if it cranks then,

Edited December 9, 201510 yr by AdventureSubaru

Also - don't let the guy who "banged on the engine" and "pulled the spark plugs and put them back in" ever touch the car again. Was he drunk? That's not how to diagnose a no start.