hello all i parked my 98 terios up and went away for 3 days i came back and car would not start at all i got a recovery truck to take it home and it decided to work i drove it to work the next morning and when i finished it had happend again and wont start, i am getting a spark but when turning over the spark plugs are staying bone dry?? i have had the fuel filter off and it is clear and i pulled the tank off and pump is working i started it on the jump leads from another car yest and ran for a couple mins now stopped and refusing to start??

any ideas/help would be appreciated thanks