79' Merccruiser 260 fuel pushrod question

[Johndunham9]

Hello, so the fueld pump wasn't working, I got a new mechanical pump and noticed that the fuel pushrod wasn't moving. Maybe it is installed incorrectly.

Anyone know what I should do? How do I make sure it's installed correctly to the cam lobe or whatever?

 

[Bt Doctur]

With th pump removed push the rod inward while someone cranks the engine, Remove the coil plug or remove the + side of the coil wires. Rod must move or the cam is wiped. If there is no movement, install and leave the pump in place and install an electric pump and safety pressure switch and cube relay

 

[Johndunham9]

With th pump removed push the rod inward while someone cranks the engine, Remove the coil plug or remove the + side of the coil wires. Rod must move or the cam is wiped. If there is no movement, install and leave the pump in place and install an electric pump and safety pressure switch and cube relay

Where would I buy the electronic pump, safety pressure switch and cube relay if needed? You're saying to install the mechanical pump and leave it in place?

Would the electronic pump go on the mechanical pump or how does that work? Is it like a conversion?

 

[Bt Doctur]

I have used a fuel pump blockoff plate and the original bolts to mount the bracket for the pump. In most cases you can still use the steel line to the carb by adding the correct fitting. You can use the Carter style or the mercruiser low pressure electric one. Iboats has the pressure switch and use the relay from a auto store for a Blazer fuel pump relay. it has a 30 or 40 Amp rating
The pressure switch energizes the relay coil to close the contacts for the main contacts. Helps prevent premature failure of the pressure switch

 

[Bt Doctur]