was plodding along fine all night, came home and went to go back out in the morning and it started up as usual then cut out after around 2 seconds, i tried again giving it some revs and it died within a coupl of seconds of starting. after this the engine just turns over but won't fire. i have very limited tools here also. ive been told to try starting it with a jump and the maf sensor and lambda unplugged but both made no difference. any common problems to start with?