Start but.....

[WESTYJACK]

After my ignition problem was ok engine try to start but crank and crank
put some gas in the throtle body and it start little bit hard to start but run for 4-5 sec then die
retry with no gas in throtle try but no start
put some gas crank start but need help from starter run maybe 1 sec.

this morning i check the injector plug into the harness and spaying in a plastic bag all 4 ok

when engine run for 4-5 sec i have response from the gas pedal
can rev the engine?

i remark that my temporary fuel return line return nothing
(take my fuel from jerrycan because tank is to old have to replace)
fuel regulator?

[Wasted youth]

Put a vacuum pump on the fuel regulator and see if it 'holds' a vacuum. It should.

[Tcash]

This is for your 1978. Fuel pump must not be working or is fuel line is plugged.
Test fuel pump cranking and with AFM (air flow meter) flap open

[WESTYJACK]

new pump
new filter
new fuel hose
pump work when cranking and suppose to run when engine run but i dont know
with afm push pump run

[WESTYJACK]

go see
https://youtu.be/65cHKGfcTVI

[Tcash]

Check fuel pressure.
It runs when You "put some gas in the throttle body and it start little bit hard to start but run for 4-5 sec"
It has to be a fuel problem.

[Tcash]

Do you have White wire going from (N) Coil #1 to (J21) ECM #1 (electronic control module)?

[WESTYJACK]

if i wait 5 minutes a try to crank he seem want to strart on first crank but no fire up
and after that if i dont but fuel in throttle body no more chance to start

[WESTYJACK]

yes white wire is there
gonna buy a fuel pressure gauge tomorrow
where the best place to put the t
just near the cold start valve

[Tcash]

Between the 3-4 injector line and fuel pump is better.
Good luck
Tcash

clean the grounds

[WESTYJACK]

is it normal that my fuel regalator is not the one with vacuum hose but the one with a kind of bolt in center and he is bolt true the firewall passenger side

[Tcash]

[WESTYJACK]

Tanks for your help TCASH
tomorrow Ill check for the ecu number

can you tell me the symptom of a glogged fuel pressure regulator
pressure gonna go high did the injector open

[Amskeptic]

[WESTYJACK]

new spark plug and gapping each
i realy think problem come from pressure
but pump is new filter is new
regulator is old
pressure test tomorrow
nothing come out on the retrurn line!

[Amskeptic]

[WESTYJACK]

I'm going to buy my fuel pressure tester
question
on the double relays each relay was ground by pin 85
where is that ground is it suppose to be with the bolt that hold the 2 relays?

[WESTYJACK]

upgrade
fuel test pressure between 3-4 cyl on port 10psi
disconnect gauge and install direct on pump 10psi
WOW BRAND NEW

[KentABQ]

Sooooooooooo....?
Are you saying "wow, it now drives as if it's brand new", or "wow, I have a brand new gauge"?
_________________
-Kent-
1976 Riviera, 1.8l FI chrome yellow VAN - "Chloe"

"I must say, how can you be in a bad mood driving this vehicle full of vibrant color.
Cars of today are so bland in comparison. It's like driving a celebration!" ---WildIdea

Bus ownership via emoticons:
---williamM

[WESTYJACK]

wow brand new gauge that resolve my problem

after first reading at 10 psi my brain tell me that new pump not prime because jerrycan is to up on the vehicule
and that's right
prime the pump and start like a new no idle but gonna see later
next problem afert 17 years not moving a think clutch is seize
i got under and the cable work the tranny leveller move
but tranny in 1 clutch down start and the westry move foward