Ford mermaid turbo pressure !!

[tim2658]

Hi all my pacific has the standard turbo 4 mermaid in her but on a jet, I took her out on Tuesday evening and she was pulling 2600rpm no smoke and doing 25knots, but I put her in the water yesterday and she would only pull 2100rpm and 18knots, the turbo wasn't kicking in, I can hear a whistle when I being the revs down but no whistle flat out, she spins freely and all looks ok, any ideas !!!

[RIB-Teccie]

If it is the same as the ford sabre, there used to be a square plate with four bolts around the fuel pump area. Under it was a diaphragm operated by pressure from the intercooler. It would push down and let on fuel. They had an occasional habit of developing a hole and causing what you have. The holes can be easily fixed with superglue as a temporary repair until you get a new diaphragm. If it's not that, it will be the usual suspects. Fuel system 1st then timing if it has a cam belt. Etc

[RIB-Teccie]

Look at the top of this fuel pump on the right hand side, the plate with four bolts will have a pipe connected to it. I've also seen a leaky intercooler allow corrosion to block the pipe at the intercooler end.

[RIB-Teccie]

I am assuming you don't have a rope on your jet.