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I currently have the Blue with shaft, need to change the ECM ?

between these two versions

Hello everyone, I need to change my tired engines, two 1998 Mercruiser 7.4 MPI in shaft line my engines are with blue top covers and I found a pair of 7.4 MPI Mercruiser but with red top covers, I was told that with the red top covers was for engines with Sterndrives, anyone know if I can make a...

Fahrenheit

I removed the two elbow and the two risers they are beautiful, I did not dismantle the manifolds but they are beautiful on the top and the pipes, the boat is still in fresh water. the smoke is vapor, it arrives after 10 minutes at 800 rpm when elbow becomes very hot +/- 100 ° and when I...

in line propeller shaft, I have two engines and my problem is on the starboard engine on the port side

hi, during an outing, one of my engines started to smoke (white smoke) the engine temperature was at 170. I thought of a head gasket and when I got back I checked the oil and it was clean, I took the compression and all 8 cylinders are at 120-125 psi. on both engines Exhaust, manifold, riser...

will check

I don't know if it's mefi3 or 4 the part# is 861736R1 and they are reman

ecm is new it have 10h, the relays are ok i tested them, i am going to the boat tomorrow i will look for the pump and the wiring

thanks I must continue my research

I took a relay on the other engine and always nothing the fuel pump did not start, I read elsewhere that IAC could cut the fuel pump, I therefore dismantle the covers to see where was the IAC and I saw that the ARRESTOR-FLAME was very very dirty and almost clogged, in time the pump started and I...

I haven't tested yet, I'm going to the boat tomorrow and will test. Thanks

Hello no, but does a relay work or does it not work so it should not have intermittent? Thank you

Hello everyone, I have a problem with one of my two engines, 1998 Mercruiser 7.4 PMI, it starts without problem and after a few minutes it stops, if I want to restart it I no longer hear the fuel pump, I am waiting for a ten minutes and the pump restarts and the engine also for a few more...

thank you for your informed opinion, I love this boat and it is the only one in France and I would like to keep it. I do not yet have the answer from sea ray but I think for the moment to change for two 350 MPI (5.7 - 300hp) first generation as you advise me, moreover they are not expensive...

the best solution to have low taxes would be to change for two turbo diesel but the price would be exorbitant and it would be necessary to change the transmissions the propellers and surely many other things, I prefer to find a solution with two smaller displacement engines.

I come from France and we have an annual tax on the engines and the hull, the tax on the engines is heavier the more the displacement is important the more the tax on the engines is painful 5600$ is right every year. I sent an email to sea ray to find out when the boats were delivered as...

I read on the sea ray specification that the sundancers 330 were delivered as standard with two mercruisers 5.7 260hp and the 7.4 were optional, someone knows it was the ratios of the transmissions and the sizes of the propellers that came with the 5.7?

I read on the sea ray specification that the sundancers 330 were delivered as standard with two mercruisers 5.7 260hp and the 7.4 were optional, someone knows it was the ratios of the transmissions and the sizes of the propellers that came with the 5.7?