ok heres a clip of previous post then whats happening now!!
1992 4.3l "w" blazer 155k auto/air/power everything
When my engine is under a load (going up hill, passing on highway or just trying to get above 55). It drops off like its not getting any gas.
Fuel pressure is good 60 psi
EGR is good
Plugs and wires good.
any ideas . Tommorow Im going to replace the coil because at night (darkness) i can see a small blue spark when i mist it with water (windex)
If that doesn't work im going to open up the top of the fuel injection and look for leaks etc. (like recommened a few months ago on this newsgroup when i was having rough starts...but they went away.)
thanks
92 blazer 4.3l "W"
OK ...........seems to be running a little better but it also got real warm up here lately(not sure if the cold wheather has any thing to do with it)
i've got new wires and plugs and coil.
First new Plugs and wires. Then new coil. all are spaced proper no arching. Like i said Fuel pressure is good(60psi). Previous owner (freind) put new pump,filter,and tank in it. But it won't hurt to change the filter again. ($cheap) Also like i said in another posting, i removed/checked EGR valve. It was a little dirty but not as bad as i hoped
GREAT NEWS..............I replaced the coil and it seems to be running great. Under a load , up hills and passsing on the highway. Starts right up. So that seems to have been my problem. $16.99
It still runs a little rough when sitting in park.(chugga chuagga rumble rumble). Im going to try and turn up the idle a little(?) but i guess i can't ask for everything at 155,000 miles.
Thanks to all.
now im here...................
ok back to running rough under a load ...up hill etc. ................try this on for size. Im coming up to a nice size hill and i gas it..........it stumbles a lttle but then gets going........then i turn off the headlights........and it bogs down at once.
seems to be an electrical problem now. Maybe the distbutor cap. ???? thats what im moving on tho next then maybe the battery..altnetor etc. any ideas???
thanks a bunch................bmaty