1990 m30 wont start-smells flooded.

[timhayes5]

was running fine. now will start after sitting a day but once shut off wont start again unless fuel pump fuse pulled, checked vacuum, air intake and throttle housing. fuel pressure regulator has good vacuum and isnt leaking fuel through. spark is good, fuel pump and filter are good. the only thing i can think of is the injectors o ring, but the head was done not to long ago by the person who we bought the car from. any ideas?

[yodawill2000]

Welcome to NICO !!!

Does sound like a leaking lower O-ring on an injector.I had the same thing awhile back.Smell the oil on the dipstick and see if you can smell gas.Gas in the oil is a bad thing !!If there is I found the culprit by pulling plugs one at a time and rigged a dip stick dealy with coat hanger wire and a qTip taped to the end.Touched the top of the piston and the one that was leaking was wet with fuel.Be aware a cylinder full of fuel can cause hydrolock if you crank it up.That will bend rods and such .

[timhayes5]

thank you, will give it a try this weekend. and will respond with info either way.