bravada wont start when warm

[old_master]

The "accordian" looking tube is the pressure line from the pump, yes, that has to be removed.
There may be a clip or clamp on the rubber insulator that the motor is mounted in, can't remember for sure.

[oak2001raid]

Ok got it apart. Gonna install it in the morning. Will post back my results

[old_master]

See post #42

[oak2001raid]

Well... that didn't work either. Same problems no better at all. I really don't know what else to do. Any ideas?

[old_master]

Ok, lets go back to my first reply and dig a little deeper. "Are you getting good blue, not orange, spark at every spark plug when it will not start?" Also, as I mentioned earlier, P0300 is almost always caused by a fault in the secondary ignition system. There are other things that can cause it, such as the MAF sensor, low fuel pressure, and sometimes a TP sensor. Those may or may not set a corresponding DTC in memory.

How many miles on the distributor cap and rotor? Do you know what brand they are?
How many miles on the spark plugs? Do you know what brand they are?
How many miles on the spark plug wires? Do you know what brand they are?

[Chris Stewart]

Excuse me gentlemen, I've been following along and agree with the dialog so far.
What's the fuel pressure now with the new pump when you first turn the keyswitch on?

[old_master]

Good call, Chris!

[oak2001raid]

UPDATE:

I checked the fuel pressure and was getting zero psi, I took the fuel line off the fuel filter, no fuel. Then I dropped the tank figuring I may have got a junk pump (new AC Delco from Ebay)

When I removed the pump, the problem was obvious, the fuel line "popped" off from the pump to the sending unit. I put it back on, this time with clamps (none were provided with kit so I didn't think it needed it).

I have run it the last couple of days and it runs really good (knock on wood). I have the same fuel pressure after an hour of running as I do when it's cold. I will post back if anything changes.

[old_master]

Big thanks to Chris!

The fuel pressure regulator keeps pressure in that hose from rising above whatever pressure the regulator is set for, usually around 62psi. Continuous operating pressure of the pump is designed for 61.64psi and maximum output pressure between 72.52psi and 108.78psi. The only time that hose should see anything above regulated pressure is when testing maximum output pressure. So, yes, it needs to be clamped on securely at both ends.

What is the fuel pressure with the new pump?

[oak2001raid]

A Huge thank you to old master, and you too Chris. I would have never figured this out on my own. This is a great site.

Oh, my fuel pressure is about 63psi

[old_master]

Beautiful, thanks for sticking with it and for posting back the fix.

[Chris Stewart]

Thanks for the update and here's one to our pal, Old Master.