1991 5.7 350 magnum with thunderbolt ignition. Alpha one gen one drive.
I plan on changing my spark plugs (ACDelco MR43T), but not sure of the proper gap.
Thank you in advance,
Joe
I have a 1991 5.7 350 magnum with thunderbolt ignition alpha one gen one:
I?m having power loss and then stalling issues when the motor gets to normal operating temperature. The engine runs fine after cooling and I suspect the problem is one of the ignition components. I see three but not sure...
Can anyone help me with a thermostat replacement. I have a 1991 5.7 Merc Magnum 350 with thunderbolt ignition and a four barrel carb. The outdrive is Alpha one/gen one
I'm reading conflicting threads that claim both 140 and 160.
Thank you in advance.
Water pump help 1991 Regal:
I recently changed my water pump in my Alpha one /gen one outdrive that cools a mercruiser magnum 350 engine. I installed a new impeller, housing and gaskets. I put everything back together exactly as removed and carefully double checked before reassembling. When I...
My 1991 mercruiser 350 magnum with a 4 barrel quadrjet carburetor started sputtering and lightly smoking (white fumes) only when the engine is started cold. The motor seems to be loaded up and clears and runs fine after I race the throttle or a few minutes of warm up. I?ve cleaned the air...
Last weekend I had drifted out of the channel and hit the bottom hard. The bottom was mostly sand however my prop has damage to all three blades each blade has a nice ding taken out. The banging noise was so loud I was sure my outdrive had damage but seems to be fine.
My boat is a 1991 25.5...
Dose anyone know what the best oil to use? Type and brand for a 1991 Mrec 5.7 350 with 700 hrs. Book says SF or SG. Ive been using Castro SAE API- 30w. I thought SG was for moterbikes.
Thanks,
I need help please.
I have a 1991 Mercruiser 5.7 350 Magnum with Tbolt ignition. I just repaired some issues from water in oil and port cylinders as follows:
Replaced both risers, manifolds and gaskets with all Merc parts.
Replaced both heads, gaskets and intake gasket. (after finding a...
I need help please... I'm getting raw water in all four of my port side cylinders and water in my oil. I have a 1991 5.7 350 magnum Alpha one mercruiser. I changed my risers, exhust manifolds and checked for blockage out to the stern drive and still have the problem. the moter runs fine with no...
