Questions about a 502 mpi vapor locking??
 

I have a 2001 baja 36 outlaw with 502 mags mpi, bought the boat last august and starting to have, I think vapor lock problems. It seems to be getting progressively worse. any help or things to check would be appreciated.

Keep your fuel lines as cool as possible. The 502's for some reason were worse then others about doing this. The fuel system in down low in front of the motor and it gets hot. I had a friends install stainless steel braided lines and they were even worse. If that has been done in your boat go back to black rubber fuel lines. Also the fuel return goes back to the pump and hot fuel in reintroduced to the motors. You can return the fuel back to the tank and it will help solve the problem.

Learn where the Schrader Valve is and how to use it in case they will not restart. It is under the plemium and looks like a valve on a tire.

Last open the engine hatch when you are stopped and let the heat out.

Good luck

Merc has a vapor lock kit to fix the problem. Call Brett at PBC with your serial numbers (402-464-4791), I've put them on two Baja's I've owned - the 454 Mag's and 502 Mags both have this problem. After you put the kits on you will never have this problem again.

Thanks for the info. Is the kit for both motors or just one??

You need a kit for each motor, it's plug and play pretty easy to install if you have done some wrenching.

I have the kits in stock and ready to ship out!

Brett
402-464-4791

Just ordered mine. Thanks for the info guys.
Quinlan

OKoutlaw, UPS has your pumps, thanks for the business!

Order my kits today. This problems seems to be getting worse throughout us boaters

Yep it is and a frustrating problem to diagnose and then convince a seemingly intelligent person his fuel is evaporating in a standard boat.The kit works a treat