ive gone thru my 88 up and down....ignition is good fuel pressure good and holds..timing is rite on..replaced the egr and sensor...they leaked and the sensor was stuck...wont start after its has been running...is there a way to check the regulator...if the egr is loose...finger tight it will stay running which leads to the running rich theory...is there something im missing...no fuel out of the regulator...could lead internally ...