1987 dodge D150 engine cranks but won't run
To help narrow it down to either fuel or ignition try this procedure. While someone is cranking the engine spray a little starting fluid into intake. If the engine runs momentarily you have fuel system problems. If engine still doesn't run you have ignition problems.
Not getting gas to run
Search Dodge Ram Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Dodge Ram Experts