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i installed a pertronix ignitor (1146a) and a flamethrower 3 ohm coil on our 1978 mercruiser 470 two or three years ago. I though things were ok,
but went to start the boat yesterday and it wouldn't fire. I figured it might be the coil, so I reinstalled the original stock coil from the...
1978 mercruiser 470 with mc1 drive.
I Spent a bunch of time replacing the lower shift cable, gimbal bearing, and bellows this week. Got lots of good help from this forum along the way. I Finally got everything back together, got the shift cable adjusted (i think).
Had the boat idling in the...
470 with mc1 - looking at manual#2, pg 55 it says the core should stick out exactly 1 3/8" from the cable guide insert. My new cable core is sticking out 2 3/4"....
I'm attaching a few pics.
The instructions that came with the cable say not to cut the core, but then mention that it might be...
1978 mercruiser 470, with mc-1 outdrive (i think).
I bought a lower shift cable kit, and was trying to just replace the lower shift cable core, but couldn't get the new core to slide through the old sheath. Then decided to do it right and change the whole cable, but.....
The sheath for the...
I have a 1978 mercruiser 470. It seems to run fine, but checked the oil today and it looked like a milkshake and level was WAY too high. We've only had it out once this year, and it ran fine. Temp is good, coolant is still full, I'm thinking it must be water that got in the oil somehow, but...
I was on the lake tonight, cruising around with the family and the boat very suddenly stalled. No hesitations or sputters, just quit pretty instantly. Had to get a tow back to the dock. It turns over, cranks, but won't fire. Tried some starting fluid still wouldn't fire. The engine has...
I have a mercruiser 470. The lower unit is stamped with # 4680971 I believe the boat is a 1977 or 1978
I took it apart, changed the impeller, housing, etc, put it back together, and now it won't shift
The prop spins freely clockwise, but won't spin counter clockwise. The shifter is stuck in...
Engine temp has been creeping up around 200 degrees this spring.
I'm planning on flushing the cooling system, changing the thermostat, and changing the impeller, but I'm not sure which parts I need (or exactly how to do it)
The engine serial # is 4773471
and the outdrive serial number is...
I have a 1978 mercruiser 470, just went with a 1-wire alternator conversion kit.
I removed the old regulator, which was wired like this:
Boatinfo - Mercruiser Service Manual nr. 2 - 1974-1977 All Engines & Drives
I cut and taped off the two yellow wires from the stator. I removed the red...