View Full Version : Fuel Delivery Problems
02-17-2009, 12:51 PM
I have a '87 chev 3/4 ton 4X4 manual tranny with the 350 TBI setup
Fuel pump works and I have fuel to the TBI assy
If I pour gas down the throttle body she runs fine until the gas is gone
but the injectors are not operating
It has had an intermittent problem like this since I have owned it (3yrs)
any ideas :dontknow:
02-17-2009, 12:54 PM
Pump could be not delivering enuff PRESSURE..
Sometimes a faulty gas cap will effect it also Jimbo.
02-17-2009, 01:03 PM
There is no fuel coming out of the injectors at all
I don't believe they are getting power
02-17-2009, 01:04 PM
how can I easily check the fuel pressure......... you gotta guage:confused:
02-17-2009, 01:05 PM
i got a tbi set up kickin around, if you run out of things to try your welcome to have it and see if its the injectors.
02-17-2009, 01:10 PM
No I don't have a guage, sorry....
.It's on my list to get soon.
02-17-2009, 11:11 PM
check the injector fuse in the fuse panel. where the wires pass through the throttle body the wires sometimes ground out and pop the fuse
02-18-2009, 12:05 AM
fuses are all good :(
will check power to the injectors in the morning and work from there
if there is power to the injectors I will once again check connections and grounds to the control module(s) and if no go will take the throttle body apart and check for blockage in the regulator section and clean everything including the injectors..... might as well..... and go from there
02-18-2009, 09:11 AM
Less sleep more working on the truck....can't miss the campin trip :-)
02-18-2009, 09:20 AM
is there a schrader valve in the fuel circit? if so you can use a dial pressure gauge.
02-18-2009, 11:06 AM
yeeeehaaaaaw Houston we have lift off
checked all connections and they seemed good but no joy so just for the fuck of it I replaced all the fuses even though none were obviously burnt
runs like a charm
my intermittent problems may have just been corrosion on the fuse spade plugins
        
02-18-2009, 11:07 AM
Right on Jimbo !!
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