Car wont start

Have a helper crank it while you visually check for spark at the plugs. If you have spark everywhere, use a gage and check fuel pressure.

To check for spark, pull spark plug wire off spark plug, use known good spark plug or spark tester in the spark plug boot. Ground/touch metal part of tester to metal part of engine, engine cranking watch for spark. Any applicable mil code?

Do you mean it cranks too slowly? Just one kind of loud clunk but the starter doesn't spin the engine? The engine cranks fine but doesn't start and run?

Caradiodoc