Well I agree with you guys that it is some thing with the pick up itself. I took it out sunday and it was clean. I spoke to someone today who told me he had the same problem with his chris craft and went through replacing the same stuff I did to no avail. Turned out in the end, the pick up had a hairline crack in it. So now I'll hunt around for a pick up and try it again on the weekend. Any one know where I can get a pick up for 1988 baja
Think the dealer still has these? Thanks for the input guys as this has been a real downer . Just when you think you fixed it ,there it comes back again.

In my discussions with Aeromotive about a similar issue, the pump may actually be boiling the fuel causing it (the pump) to actually "cavitate" just like a prop can. Is there a return fuel line to the tank from the regulator? Does it feed to the tank or is it "T'd" into the fuel inlet side....it can go either way, but the tank will cool the fuel more. What size line is being used??? The air leak problem (crack in line) could cause the cavitation thing resulting in lower pressure. Any obstruction to the inlet line that reduces flow into the pump will cause cavitation and loss of pressure....... I am chasing a similar problem also and this is what the "experts" say.

Fuel tank pickup ,suck,blow[I hate to say that]will it hold pressure?Fuel lines?[change them]Fuel tank vent?

From the tank to the carb is all new 3/8 " line. Only about 8" from top of tank to pump then to regulator next thru fram high flow filter/water seperator then to carb. No return line in system, the fuel vent line is clear. I no of no other obstructions in the line, it comes out of the top of the tank at a 90 degree then straight to the pump with one other 90 degree exiting the pump.Other then that it is all straight runs . Pump is mounted low near the stringer in front of the motor . I called baja dealer today they said I have to know the manufacturer of the tank before they can even begin to find a pick up " some help they are "! I did notice that the tank has a second pick that is capped right next to the one being used I may uncapp it ,pull it out and switch to the second one and see if this changes any thing. I thought at first it was just plain vapor lock so I moved the pump from where is was to the front and the lines are not near any heatr source like they were before but even with those changes still happends. The pump is hot to the touch but never gets any hotter as we keep checking it thoughtout the day.

Tested the fuel pick up today and it holds pressure fine no leaks.
Removed the fuel gauage sender and looked into the tank appears clean with nothing floating around. I ran a magnet down in the tank to see if it picked up anything but nothing. I called Holley Tech line again and the stated that these pumps are gravity feed pumps and do not suck fuel well at all. My pump is even with the tank outlet but according to holley this is still to high and the pump is not able to maintain pressure. Do all you guys have the pumps mounted below the pick up? if so where are they? Thanks again, the saga continues.. Some day I will be able to actually enjoy driving the boat I hope!!!

are you sure your vent is clear? try running the boat with the fuel cap off once to see what happens

I have always loosend the fuel cap when it starts to drop to see if it made a difference and it never did. When refueling the vent always is clear and vents fine from what I can tell. I think I'm gong to try and move the pump as low as possible to try and get a better feed from the tank.

only ran into that situation once on an older boat....the top 90 degree fitting sould unscrew off the top of your pick up exposing the top of the tube,theres a screen in there that usually causes this exact problem(it has to be an aluminum pick up though),and also make sure your hoses arent deteriorating from the inside,seen them accually tear inside and make there own little flapper inside causing the pump to loose prime........oh ya guys...duh......make sure your pump is located as low in the boat as possible,prefferable below the height of the tank so it can gravity feed itself....these are pressure pumps,not suction pumps....good luck

What kind of a carb do you have? Quadrajet? If so, then there is a filter in the carb. It's right at the point where the line enters. When you take it apart, take note of the spring and be sure to put it back correctly.

You could rig the pump to feed from a 5 gallon outboard gas container or gas can. Make sure the fitting is large enough and secure the can for obvious reasons - be careful.

This would allow you to test against the gravity feed concern.

Have you verified the pressure readings with a mechanical gauge mounted on the fuel line?

I am not that familiar with regulators, but I have not heard anyone mention that yet???

Good Luck,

Steve