'89 K=5 no start problem

[martin]

My '89 k5 has been giving me hell lately. The engine will turn over all day
long, but never fire up. Sometimes it will fire up for a split second and
then shut off. There's plenty of gas in the tank. I have replaced all the
plugs, wires, cap/rotor, and even the coil. My next suspicion if the fuel
supply. I hear the fuel pump turn on when the ignition key is turned, so I'm
guessing the fuel filter or injectors are bad? Any ideas? It's a 350V8 with
TBI

[Steve W.]

Pump coming on is good BUT unless you actually check the pressure and
flow rate it doesn't mean anything.

--
Steve W.

[Repairman]

"martin" <amart...@charter.net> wrote in message
news:OLiPm.58605$rE5....@newsfe08.iad...

Toss a shot of gas into the throttle body and see if it starts. You'll know
if it's a fuel issue then.
Follow Steve's advise. If you wanna work on FI systems a fuel pressure
tester is mandatory.

[Bill]

Check the basics, Fuel, Spark, Air.

Fuel: While someone is turning the key to start, have someone else spray
starting fluid into the throttle body. If you get a response, then this is a
fuel problem.

Spark: Remove a spark plug and place the side screw portion against a piece
of body metal or engine metal (grounded to battery negative/ground). Then
watch as someone turns the key to start. See if there is spark. Advanced
spark testing is to use a spark testing tool which would typically have a
gap of .25 inch. You should see a crisp blue spark. This is a larger gap
than a spark plug and tests that the coil is producing a high enough
voltage. (Good spark as opposed to weak spark.)

Air: Slightly press on the accelerator while trying to start. Normally the
throttle is completely closed and the IAC (Idle Air Control) valve adjusts
to admit air into the engine. By pressing slightly on the accelerator, you
are bypassing the IAC valve and allowing air to enter the engine.

Combination test: While someone slightly presses on the accelerator and
turns the key to start, have someone else spray starting fluid into the
throttle body.

[HDS]

Spark Control Module inside the distributor. Simple fix, just need a Philips.
Buy two, and keep one inside the cab.

I know this is late, but I hope you got it worked out.

HDS

"martin" <amart...@charter.net> wrote in message news:OLiPm.58605$rE5....@newsfe08.iad...