87 5.7 fuel injected HELP!

[ofautorepair]

I have an 87 c10 with a 350 fuel injected I changed the in tank fuel pump and the fuel filter about 2 months ago now sometimes the truck cuts off and I have to pull over and starts it runs a little rough wack the throttle clears up and runs like a champ it doesn't always do it some times it goes days without doing it any ideas

[bustedknuckles]

Does it start right up after? Ever rebuilt the tb? Have you checked the injector spray pattern?

[ofautorepair]

you have to crank it for a little bit then its starts up rough no I haven't rebuilt the tb but I did check the injectors

[bustedknuckles]

Does yours just die or does it feel like it runs out of gas? I had one that would just die out of no where, and took a little bit to get it to crank, I chased the problem for a while and it ended up being the distributor.

[ofautorepair]

it just cuts off but now that you mention it the distributor in my s10 went out and it was just like that only difference is that the s10 didn't turned on till I changed the distributor

[Desert1957]

Remember on these 87's the oil pressure switch and the Ignition Module are all in with the Fuel Pump relay

[ofautorepair]

yea but my oil pressure never drops is always good

[Desert1957]

Originally Posted by ofautorepair

yea but my oil pressure never drops is always good

Ok that's good , but check the connection anyway to the switch.
I have also seen ignition module cause fuel problems when hot.

That tip listed above about the Distributor is good also, But in my experience Iv'e only seen it on Big Block engines. The top bushing wears out and the rotor starts hitting the Distributor cap.

When mine had the symptoms you are having the fuel pump was weak , causing low fuel pressure and stalling, Truck would stall but crank right up run fine for a few miles. If you do replace it , don't get the China junk. This is one area you don't want to save money.

Desert

[motornut]

on my 87 4X4 burb that happened a couple of times
first time the whole underside was packed with snow and ice
left it on the side of the road,
went back and it started drove it home checked for holes leaks ,broke wires,
nothing
drove fine again,then quit again went back next day it started up drove home
changed the pump then.
figured that was it and then it quit again,checking voltage again,
found a nic,cut in the fuel pump wire over the axle all green and corroded,hard and baked

[ofautorepair]

I'll take a look at it thank you guys for all the help

[ofautorepair]

k so I checked the wiring I checked the fuel pressure
everything looks good and it did it again on my way to work and on my way home I was thinkin how bout the coil ? May be is going out