hard starts
#1
hard starts
ok here's the skinny.... i have a 90 thing runs great, but a coupple of weeks ago the thing started to start hard... like the pump was loosing prime. it seems to run fine otherwise. but it bothers me a bit. i've been checking my oil very often and the level hasn't gone up nor does it smell like diesel... if i let my fass pump prime for like 10 sec. it starts fine...checked all the fuel lines for leaks didn't finde any... I don't have a fuel pressure guage in line so i don't know how much it dropped off when i'm driving.. i did however hook in my fuel pressure guage in after i put the fass pump in and i had 14psi at idle.. I'm loosing my minde with this and considering putting a new ve on and getting a better fuel pump.., Any help??? almost forgot i put an in line check valve in the supply line
Last edited by seandonato73; 10-25-2009 at 08:58 PM. Reason: forgot to put something in
#2
#4
it started to start hard and one of the guys at word said to try a check valve in the supply line.... it was starting hard before i put the check valve in. the part that gets me is, i parked the truck after work in the drive way, started it the next day, it started hard, and i didn't do any mods to the truck for a wile???? it just kinda poped up an has been bothering me ever since
#5
if your letting the FASS prime for say 10 second then your letting all the air that got into the IP be bled thru back to the tank... put a clear line on the return line one night and the next morning go out and let the FASS prime the system and watch the return line... i can almost bet you'll see a nice bubbly section. fuel system integrity is crucial and fickle... something like this can deffinately pop up out of no where... mods or not
#7
#8
#10
eliminate the electric shut off for test purposes... might want to make sure that the connection on the shut off is tight and clean too... i had an intermittent miss at idle, and the occasional extended crank period, i knew about this before i bought the truck; alls i did was tweak the connector to fit abit more snugly and some di-electric grease. starts up like a champ (when the weak starter spins it fast enough) and the miss disappeared
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seandonato73 (10-31-2009)